{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T07:13:51Z","timestamp":1788160431962,"version":"build-2803163510"},"reference-count":33,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T00:00:00Z","timestamp":1787875200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clocks &amp; Sleep"],"abstract":"<jats:p>This study compared the effects of a 25-min nap opportunity and a 10-min non-sleep deep rest (NSDR) condition on perceptual, cognitive, and physical performance in physically active young adults. Sixty participants (26 female, 34 male; 22 \u00b1 4 years) were randomly assigned to one of three groups (nap, NSDR, control; n = 20 each). All groups completed identical assessments immediately, 20 min, and 40 min post-intervention. Mixed-effects models, adjusted for sex, prior-night sleep, and weekly physical activity, revealed a significant group \u00d7 time interaction for sleepiness, fatigue, readiness to perform, and handgrip strength (p &lt; 0.05), whereas no significant group \u00d7 time interaction was found for cognitive performance (reaction time and accuracy; p &gt; 0.05). At 40 min post-intervention, the nap group reported lower fatigue than control (p = 0.01, Cohen\u2019s d = 0.98) and higher readiness to perform than both control (p &lt; 0.001, Cohen\u2019s d = 1.48) and NSDR (p = 0.001, Cohen\u2019s d = 1.25). For handgrip strength, although a significant group \u00d7 time interaction was observed, post-hoc comparisons showed no significant between-group differences at any time point. No significant effects were observed for the NSDR condition on perceptual, cognitive, or physical outcomes (p &gt; 0.05). These findings indicate that a short nap can enhance perceived readiness and reduce fatigue after a brief latency period, whereas NSDR did not elicit significant effects under the present conditions.<\/jats:p>","DOI":"10.3390\/clockssleep8030052","type":"journal-article","created":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T05:55:56Z","timestamp":1788155756000},"page":"52","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparing the Effects of a Short Nap and Non-Sleep Deep Rest on Perceptual, Cognitive, and Physical Performance in Active Adults"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2861-0164","authenticated-orcid":false,"given":"Omar","family":"Boukhris","sequence":"first","affiliation":[{"name":"Centre for Sport and Human Performance Research, School of Allied Health, Human Services, and Sport, La Trobe University, Melbourne, VIC 3086, Australia"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9828-2349","authenticated-orcid":false,"given":"Haresh","family":"Suppiah","sequence":"additional","affiliation":[{"name":"Centre for Sport and Human Performance Research, School of Allied Health, Human Services, and Sport, La Trobe University, Melbourne, VIC 3086, Australia"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9990-8830","authenticated-orcid":false,"given":"Matthew","family":"Driller","sequence":"additional","affiliation":[{"name":"Centre for Sport and Human Performance Research, School of Allied Health, Human Services, and Sport, La Trobe University, Melbourne, VIC 3086, Australia"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"101565","DOI":"10.1016\/j.smrv.2021.101565","article-title":"A systematic review and meta-analysis of poor sleep, insomnia symptoms and stress in undergraduate students","volume":"61","author":"Gardani","year":"2022","journal-title":"Sleep Med. 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