Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
cdn.feathr.co/js/boomerang.min.js	14400.0 s	41.9 KiB
apsoc.informz.net/web_trk/sp.js	0.0 ms	27.5 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
kit.fontawesome.com/7394438f7c.js	60.0 s	5.7 KiB
script.crazyegg.com/pages/scripts/0103/9167.js	300.0 s	2.7 KiB
marco.feathr.co/v1/refresh	0.0 ms	624 B
/track/cmf/generic?gdpr=0&ttd_passthrough=a_id%3D5b9ff69b...	0.0 ms	149 B
/p.css?s=1&k=obg3fef&ht=tk&f=139.140.175.176&a=20488762&a...	604800.0 s	172 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/s/nunitosans/v19/pe0RMImSLYBIv1o4X1M8cce4OdVisMz5nZRqy6c...	50 ms
use.fontawesome.com/releases/v5.5.0/webfonts/fa-solid-900.woff2	40 ms
/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeT...	40 ms
ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-0.woff2	30 ms
ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-13.woff2	30 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:39.19 source:map[column:27323 line:2 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:0.191 source:map[column:8207 line:0 type:source-location url:https://www.physiology.org/ResourcePackages/APS/assets/scripts/skrollr.min.js urlProvider:network]] map[reflowTime:1.483 source:map[column:50335 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]] map[reflowTime:0.194 source:map[column:50393 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]] map[reflowTime:0.163 source:map[column:50457 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]] map[reflowTime:32.86 source:map[column:49615 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]] map[reflowTime:0.321 source:map[column:51395 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]] map[reflowTime:4.169 source:map[column:49637 line:1 type:source-location url:https://code.jquery.com/jquery-3.7.1.min.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background `div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background`	/images/default-source/homepage-feature/featured-member-s...	786.0 KiB	655.8 KiB
Function `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	599.3 KiB	590.8 KiB
div#ContentPlaceholder_T438A4849001_Col00 > ul.facets > li.facets__facet > div.facets__image `div#ContentPlaceholder_T438A4849001_Col00 > ul.facets > li.facets__facet > div.facets__image`	/images/default-source/facuet-images/jpa-website-facet-im...	507.1 KiB	457.1 KiB
div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background `div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background`	/images/default-source/homepage-feature/featured-member-s...	423.9 KiB	293.7 KiB
div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background `div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background`	/images/default-source/homepage-feature/featured-member-s...	421.0 KiB	290.8 KiB
div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background `div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background`	/images/default-source/homepage-feature/featured-member-s...	360.5 KiB	230.2 KiB
div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background `div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background`	/images/default-source/homepage-feature/featured-member-s...	341.9 KiB	211.7 KiB
Physiological Reports `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	108.0 KiB	99.6 KiB
Regulatory, Integrative and Comparative Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	100.2 KiB	91.8 KiB
Renal Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	80.7 KiB	72.2 KiB
Cell Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	73.2 KiB	64.7 KiB
Physiological Genomics `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	73.0 KiB	64.5 KiB
Gastrointestinal and Liver Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	71.7 KiB	63.2 KiB
Lung Cellular and Molecular Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	70.3 KiB	61.8 KiB
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/comprehensive-physiology---202...	69.9 KiB	61.4 KiB
Endocrinology and Metabolism `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	64.9 KiB	56.4 KiB
AJP (1898-1976) `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	63.5 KiB	55.1 KiB
Heart and Circulatory Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	60.5 KiB	52.0 KiB
Journal of Neurophysiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	55.0 KiB	46.5 KiB
Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	51.6 KiB	43.2 KiB
Advances in Physiology Education `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	45.2 KiB	36.7 KiB
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/physrev-2026-106-issue-1-cover...	39.1 KiB	30.7 KiB
Journal of Applied Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...	16.4 KiB	8.0 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-DIV

nodeLabel: div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background

path: 1,HTML,1,BODY,3,DIV,0,DIV,0,UL,0,LI,0,DIV

selector: div.horizontal-scroll__wrapper > ul.horizontal-scroll__contents > li.horizontal-scroll__item > div.member-hero-background

snippet: <div class="member-hero-background" style="background-image: url("https://www.physiology.org/images/default-source/ho…");">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/ScriptResource.axd?d=agwj-qG4Oi7k9hkvkRq2GbJ-1TqoOBFnQyH...	41.4 KiB	306 ms
/ScriptResource.axd?d=ePnjFy9PuY6CB3GWMX-b_0DUOzgGfRFhxwQ...	10.0 KiB
/Stylesheets/APSMain/886019b4-3290-420a-8a5c-a8d24fae0eb3...	37.0 KiB	1.2 s
use.typekit.net/obg3fef.css	986 B	911 ms
www.physiology.org/ResourcePackages/APS/assets/scripts/slick.js	25.3 KiB	459 ms
kit.fontawesome.com/7394438f7c.js	5.7 KiB	1.0 s
use.fontawesome.com/releases/v5.5.0/css/all.css	12.1 KiB	1.1 s
www.physiology.org/ResourcePackages/APS/assets/scripts/init-slick.min.js	3.7 KiB
/css?family=Merriweather:400i\|Nunito+Sans:400,400i,600,60...	1.5 KiB	820 ms
/p.css?s=1&k=obg3fef&ht=tk&f=139.140.175.176&a=20488762&a...	172 B	753 ms
code.jquery.com/jquery-3.7.1.min.js	30.0 KiB	1.4 s

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 3.3 s

URL	Time Spent
physiology.org/	1.0 s
www.physiology.org/	864 ms
/SSO/?vi=12&vt=8d52502f590cfab3500ec4891e1708804b7c352702...	1.1 s
/SSO/Login.aspx?vi=12&vt=893d97f62523fd5bfb348b67d08b1f85...	266 ms
/SSO/?vi=12&vt=8d52502f590cfab3500ec4891e1708804b7c352702...	0.0 ms
www.physiology.org/?DPLF=Y	0.0 ms
www.physiology.org/?SSO=Y	0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 310 ms 152.8 KiB

URL	Transfer Size	Est Savings
/! Font Awesome Pro 6.7.2 by @fontawesome - https://fontawesome.com * License - https://fontaw…	102.9 KiB	102.4 KiB
/Stylesheets/APSMain/886019b4-3290-420a-8a5c-a8d24fae0eb3...	33.8 KiB	27.5 KiB
use.fontawesome.com/releases/v5.5.0/css/all.css	11.6 KiB	11.5 KiB
/! Font Awesome Pro 6.7.2 by @fontawesome - https://fontawesome.com * License - https://fontaw…	11.4 KiB	11.4 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 460 ms 704.4 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH&cx=c&gtm=4e64h1	177.5 KiB	115.8 KiB
www.googletagmanager.com/gtag/js?id=G-MEZBQL4HVQ&cx=c&gtm=4e64h1	173.4 KiB	72.1 KiB
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH	178.6 KiB	69.7 KiB
www.googletagmanager.com/gtag/js?id=G-2XWCGG40TY&cx=c&gtm=4e64h1	157.1 KiB	66.8 KiB
www.googletagmanager.com/gtag/js?id=G-M5KQQHZ4D6&cx=c&gtm=4e64h1	157.1 KiB	66.7 KiB
www.googletagmanager.com/gtag/js?id=G-70HB0WWZEK&cx=c&gtm=4e64h1	157.1 KiB	66.3 KiB
www.googletagmanager.com/gtag/js?id=G-JNGKZ7FE80&cx=c&gtm=4e64h1	157.2 KiB	65.9 KiB
www.googletagmanager.com/gtag/js?id=G-PQ4M2JG8XQ&cx=c&gtm=4e64h1	159.9 KiB	65.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-TB3ZPRK	148.9 KiB	58.0 KiB
/pages/versioned/commontransformations-scripts/df70602680...	71.7 KiB	35.2 KiB
/ScriptResource.axd?d=agwj-qG4Oi7k9hkvkRq2GbJ-1TqoOBFnQyH...	38.1 KiB	22.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	608 ms	13 ms	0.0 ms
www.physiology.org/?SSO=Y	564 ms	44 ms	4.0 ms
code.jquery.com/jquery-3.7.1.min.js	391 ms	224 ms	5.7 ms
www.physiology.org/ResourcePackages/APS/assets/scripts/skrollr.min.js	293 ms	105 ms	2.0 ms
/pages/versioned/commontransformations-scripts/df70602680...	291 ms	260 ms	14 ms
www.googletagmanager.com/gtm.js?id=GTM-TB3ZPRK	276 ms	228 ms	35 ms
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH	253 ms	213 ms	39 ms
www.googletagmanager.com/gtag/js?id=G-70HB0WWZEK&cx=c&gtm=4e64h1	246 ms	202 ms	42 ms
www.googletagmanager.com/gtag/js?id=G-PQ4M2JG8XQ&cx=c&gtm=4e64h1	232 ms	187 ms	44 ms
www.googletagmanager.com/gtag/js?id=G-JNGKZ7FE80&cx=c&gtm=4e64h1	226 ms	189 ms	36 ms
www.googletagmanager.com/gtag/js?id=G-MEZBQL4HVQ&cx=c&gtm=4e64h1	221 ms	182 ms	36 ms
www.googletagmanager.com/gtag/js?id=G-2XWCGG40TY&cx=c&gtm=4e64h1	203 ms	171 ms	31 ms
www.googletagmanager.com/gtag/js?id=G-M5KQQHZ4D6&cx=c&gtm=4e64h1	196 ms	157 ms	38 ms
kit.fontawesome.com/7394438f7c.js	118 ms	112 ms	1.8 ms
cdn.feathr.co/js/boomerang.min.js	90 ms	74 ms	9.9 ms
www.google-analytics.com/analytics.js	77 ms	69 ms	3.9 ms
/ScriptResource.axd?d=agwj-qG4Oi7k9hkvkRq2GbJ-1TqoOBFnQyH...	67 ms	51 ms	8.1 ms
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH&cx=c&gtm=4e64h1	66 ms	24 ms	42 ms
apsoc.informz.net/web_trk/sp.js	65 ms	53 ms	4.5 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	2.7 s
Other	737 ms
Style & Layout	599 ms
Script Parsing & Compilation	430 ms
Rendering	96 ms
Garbage Collection	83 ms
Parse HTML & CSS	51 ms

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 8.2 KiB

URL	Transfer Size	Est Savings
/Stylesheets/APSMain/886019b4-3290-420a-8a5c-a8d24fae0eb3...	37.0 KiB	8.2 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 13.5 KiB

URL	Transfer Size	Est Savings
www.physiology.org/ResourcePackages/APS/assets/scripts/slick.js	22.1 KiB	8.6 KiB
www.physiology.org/ResourcePackages/APS/assets/scripts/scripts.js	10.7 KiB	4.9 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/images/default-source/homepage-feature/featured-member-s...	790.2 KiB
/images/default-source/placeholder-content/journal-covers...	603.2 KiB
/images/default-source/facuet-images/jpa-website-facet-im...	510.9 KiB
/images/default-source/homepage-feature/featured-member-s...	427.7 KiB
/images/default-source/homepage-feature/featured-member-s...	424.8 KiB
/images/default-source/homepage-feature/featured-member-s...	364.2 KiB
/images/default-source/homepage-feature/featured-member-s...	345.6 KiB
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH	178.9 KiB
www.googletagmanager.com/gtag/js?id=G-L6BSPLN5JH&cx=c&gtm=4e64h1	177.6 KiB
www.googletagmanager.com/gtag/js?id=G-MEZBQL4HVQ&cx=c&gtm=4e64h1	173.5 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image `ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image`	/images/default-source/ads/flyover-nav-ad-300x250.png?sfv...
ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image `ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image`	/images/default-source/ads/flyover-nav-ad-300x250.png?sfv...
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/comprehensive-physiology---202...
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/comprehensive-physiology---202...
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/comprehensive-physiology---202...
Function `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Cell Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Endocrinology and Metabolism `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Gastrointestinal and Liver Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Heart and Circulatory Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Lung Cellular and Molecular Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Regulatory, Integrative and Comparative Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Renal Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
AJP (1898-1976) `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Journal of Applied Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Journal of Neurophysiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Advances in Physiology Education `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/physrev-2026-106-issue-1-cover...
Physiological Reports `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Function `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Cell Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Endocrinology and Metabolism `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Gastrointestinal and Liver Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Heart and Circulatory Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Lung Cellular and Molecular Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Regulatory, Integrative and Comparative Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Renal Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
AJP (1898-1976) `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Journal of Applied Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Journal of Neurophysiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Advances in Physiology Education `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
div > li.slick-slide > a > img `div > li.slick-slide > a > img`	/images/default-source/ads/physrev-2026-106-issue-1-cover...
Physiological Reports `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Physiological Genomics `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Physiological Genomics `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
Physiology `div > li.slick-slide > a > img`	/images/default-source/placeholder-content/journal-covers...
APS_Lockup_RGB Reverse-01 `div > div.sfContentBlock > a > img`	/images/default-source/page-design/aps_lockup_rgb-reverse...
APS_Lockup_RGB Reverse-01 `div > div.sfContentBlock > a > img`	/images/default-source/page-design/aps_lockup_rgb-reverse...
Search `div.sfContentBlock > form#headerSearchForm > label.header-search__label > img#headerSearchFormIcon`	/images/default-source/page-design/icons/icon-search.png?...
Like APS on Facebook `ul > li > a > img`	/images/default-source/page-design/icons/icon-social-face...
Follow APS on YouTube `ul > li > a > img`	/images/default-source/page-design/icons/icon-social-yout...
Follow APS on LinkedIn `ul > li > a > img`	/images/default-source/page-design/icons/icon-social-link...
li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow `li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow`	www.physiology.org/images/default-source/page-design/icons/arrow-right-white.png
li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow `li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow`	www.physiology.org/images/default-source/page-design/icons/arrow-right-white.png
li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow `li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow`	www.physiology.org/images/default-source/page-design/icons/arrow-right-white.png
li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow `li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow`	www.physiology.org/images/default-source/page-design/icons/arrow-right-white.png
li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow `li.facets__facet > a.facets__link > div.facets__button > img.facets__arrow`	www.physiology.org/images/default-source/page-design/icons/arrow-right-white.png
Follow APS on Twitter `ul > li > a > img`	/images/default-source/page-design/icons/x-for-web.png?sf...
ul > li > a > img `ul > li > a > img`	/images/default-source/page-design/icons/bluesky-for-web....

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●User Timing marks and measures 35 user timings

●Avoid long main-thread tasks 20 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 120 ms

●Server Backend Latencies 320 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 200 ms

●Avoid large layout shifts 2 layout shifts found

○INP breakdown

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Function `div.slick-track > div.slick-slide > div > li.slick-slide`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list > button.slick-prev `div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list > button.slick-prev`
div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list > button.slick-next `div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list > button.slick-next`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li > ul.has-callout > li.header-nav__callout > a.header-nav__callout-link `li > ul.has-callout > li.header-nav__callout > a.header-nav__callout-link`
li > ul.has-callout > li.header-nav__callout > a.header-nav__callout-link `li > ul.has-callout > li.header-nav__callout > a.header-nav__callout-link`
div.sfContentBlock > ul > li > a `div.sfContentBlock > ul > li > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Women’s Health and Cellular Biology Leaders to Speak at American Physiology Sum… `ul.item-list > li.item-list__item > div > a.item-list__title`
10 APS Journals Open Access in 2026 Through Subscribe to Open `ul.item-list > li.item-list__item > div > a.item-list__title`
APS Members Elect New Leaders for 2026–2027 `ul.item-list > li.item-list__item > div > a.item-list__title`
Gut Microbiome May Be the Link to Gluten Sensitivity Without Celiac Disease `ul.item-list > li.item-list__item > div > a.item-list__title`
APS Names Erika Shugart Chief Executive Officer `ul.item-list > li.item-list__item > div > a.item-list__title`
Marathon Running Temporarily Stresses Kidneys, Digestive System `ul.item-list > li.item-list__item > div > a.item-list__title`

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.journal-background > div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list `div.journal-background > div#ContentPlaceholder_C009_Col00 > section.slider > ul.slick-list`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image `ul.has-callout > li.header-nav__callout > a.header-nav__callout-link > img.header-nav__callout-image`	/images/default-source/ads/flyover-nav-ad-300x250.png?sfv...	300 x 250	300 x 250	450 x 375

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
www.physiology.org/?SSO=Y	Loading the image 'https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-JNGKZ7FE80&cid=211544022.1776813830&gtm=45je64h1v9202803415z8811875412za20gzb811875412zd811875412&rcb=6&aip=1&dma=1&dma_cps=a&gcs=G111&gcd=13n3n3n2n5l1&npa=0&frm=0&tag_exp=0~115616986~115938465~115938469~117266400~117512542~118463261&z=1873835209' violates the following Content Security Policy directive: "img-src .gstatic.com .googleapis.com platform.tumblr.com web.facebook.com www.facebook.com www.redditstatic.com www.linkedin.com https://syndication.twitter.com https://static.licdn.com/scds/common/u/images/apps/connect/sprites/sprite_connect_v14.png pbs.twimg.com .twimg.com data: blob: novartis.contacthr.com novartispharmaceuticalscorp.contacthr.com .google-analytics.com https://www.googletagmanager.com https://.insight.sitefinity.com https://.dec.sitefinity.com twitter.com .twitter.com use.fontawesome.com .eloqua.com .physiology.org connect.the-aps.org .cloudfront.net .placehold.it stats.g.doubleclick.net marco.feathr.co .adsrvr.org polo-v1.feathr.co polo.feathr.co .crazyegg.com .hotjar.com .informz.net .surveymonkey.com .everyaction.com .tickcounter.com .rdmobile.com .vimeo.com picsum.photos .picsum.photos s3.amazonaws.com voicesofaps.gv-one.com .photoshelter.com 'self' https://cdn.insight.sitefinity.com https://dec.azureedge.net web-chat.nativechat.com". The action has been blocked.

www.physiology.org/?SSO=Y

Loading the image 'https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-JNGKZ7FE80&cid=211544022.1776813830&gtm=45je64h1v9202803415z8811875412za20gzb811875412zd811875412&rcb=6&aip=1&dma=1&dma_cps=a&gcs=G111&gcd=13n3n3n2n5l1&npa=0&frm=0&tag_exp=0~115616986~115938465~115938469~117266400~117512542~118463261&z=1873835209' violates the following Content Security Policy directive: "img-src *.gstatic.com *.googleapis.com platform.tumblr.com web.facebook.com www.facebook.com www.redditstatic.com www.linkedin.com https://syndication.twitter.com https://static.licdn.com/scds/common/u/images/apps/connect/sprites/sprite_connect_v14.png pbs.twimg.com *.twimg.com data: blob: novartis.contacthr.com novartispharmaceuticalscorp.contacthr.com *.google-analytics.com https://www.googletagmanager.com https://*.insight.sitefinity.com https://*.dec.sitefinity.com twitter.com *.twitter.com use.fontawesome.com *.eloqua.com *.physiology.org connect.the-aps.org *.cloudfront.net *.placehold.it stats.g.doubleclick.net marco.feathr.co *.adsrvr.org polo-v1.feathr.co polo.feathr.co *.crazyegg.com *.hotjar.com *.informz.net *.surveymonkey.com *.everyaction.com *.tickcounter.com *.rdmobile.com *.vimeo.com picsum.photos *.picsum.photos s3.amazonaws.com voicesofaps.gv-one.com *.photoshelter.com 'self' https://cdn.insight.sitefinity.com https://dec.azureedge.net web-chat.nativechat.com". The action has been blocked.

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Page has the HTML doctype

●Properly defines charset

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`