{ "version": "https://jsonfeed.org/version/1.1", "title": "Low-Noise · Weekly Briefs", "home_page_url": "https://clear.gaiya365.com/", "feed_url": "https://clear.gaiya365.com/feed.json", "items": [ { "id": "https://clear.gaiya365.com/weekly/2026-10-18/", "url": "https://clear.gaiya365.com/weekly/2026-10-18/", "title": "Week of Oct 12, 2026", "content_text": "A review of single evening exercise sessions in healthy adults found no overall evidence of worse sleep, though vigorous exercise close to bedtime may impair some measures. The review found no clear association between physical activity and sleep among university students. Daytime nap opportunities generally improved physical and cognitive performance in physically active people, with longer opportunities showing greater benefits. Across exercise studies, sleep loss of ≤ 6 h in any 24 h period was associated with lower physical performance, especially for PM tasks. In competitive athletes, longer sleep-duration changes were more likely than acute changes to affect performance, particularly in sports demanding speed, tactics, or technical skill. A review recommended massage and cold-water immersion for perceived recovery after football matches, but found no favored method for physical or physiological outcomes. Across reviewed studies, chronic resistance exercise improved sleep, especially sleep quality, while acute sleep effects remained uncertain.", "date_published": "2026-10-18T00:00:00Z", "date_modified": "2026-10-18T06:18:36.394251+00:00", "_lownoise": { "cards": [ { "id": "exercise-30374942", "version": 1, "claim": "A review of single evening exercise sessions in healthy adults found no overall evidence of worse sleep, though vigorous exercise close to bedtime may impair some measures.", "mind_body_angle": { "direction": "behavior_habit", "note": "Exercise timing is the habit and sleep is the measured outcome; the abstract did not assess thinking or mood." }, "population": "Healthy adults", "intervention_or_exposure": "A single session of evening physical exercise", "dose": "Single session; vigorous exercise ending ≤ 1 h before bedtime was flagged as a possible concern", "comparator": "No-exercise control", "outcome": "Sleep stages, sleep latency, sleep duration, sleep efficiency, and waking after sleep onset", "effect": "Compared with control, slow-wave sleep increased by 1.3 percentage points and stage 1 sleep decreased by 0.9 percentage points.", "limitations": "All significant moderator findings disappeared after removal of one study.", "how_to_use": "Evening exercise can be considered when choosing a workable exercise time.", "caution": "Vigorous exercise ending ≤ 1 h before bedtime may impair sleep latency, duration, or efficiency.", "domain": "exercise", "topic": "evening-exercise-and-sleep", "study_type": "meta-analysis", "evidence_strength": "high", "evidence_strength_basis": "Meta-analysis (PubMed publication type). Abstract states 23 included studies; high requires at least 10 and no low-certainty wording.", "sources": [ { "pmid": "30374942", "doi": "10.1007/s40279-018-1015-0", "title": "Effects of Evening Exercise on Sleep in Healthy Participants: A Systematic Review and Meta-Analysis.", "journal": "Sports medicine (Auckland, N.Z.)", "year": 2019, "url": "https://pubmed.ncbi.nlm.nih.gov/30374942/", "doi_url": "https://doi.org/10.1007/s40279-018-1015-0", "license": null, "publication_types": [ "Journal Article", "Meta-Analysis", "Systematic Review" ], "cited_by_count": 224 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "exercise-33864990", "version": 1, "claim": "The review found no clear association between physical activity and sleep among university students.", "mind_body_angle": { "direction": "behavior_habit", "note": "Activity and sleep are daily body habits examined together here; the review did not assess mental state or ways of thinking." }, "population": "University students.", "intervention_or_exposure": "Physical activity, including moderate-to-high and moderate-to-vigorous activity.", "dose": "not reported", "comparator": "not reported", "outcome": "Sleep quality and sleep duration.", "effect": "Pooled sleep-quality estimate: r = -0.18, 95% CI (-0.37, 0.03), p = 0.100; sleep-duration estimate: r = -0.02, 95% CI (-0.16, 0.12), p = 0.760.", "limitations": "Evidence was predominantly cross-sectional, and few studies used device-based measures.", "how_to_use": "Use this finding as context when discussing activity and sleep patterns in university students.", "caution": "These estimates do not establish that changing activity will change sleep.", "domain": "exercise", "topic": "exercise-for-better-sleep", "study_type": "meta-analysis", "evidence_strength": "high", "evidence_strength_basis": "Meta-analysis (PubMed publication type). Abstract states 29 included studies; high requires at least 10 and no low-certainty wording.", "sources": [ { "pmid": "33864990", "doi": "10.1016/j.smrv.2021.101482", "title": "Sleep and physical activity in university students: A systematic review and meta-analysis.", "journal": "Sleep medicine reviews", "year": 2021, "url": "https://pubmed.ncbi.nlm.nih.gov/33864990/", "doi_url": "https://doi.org/10.1016/j.smrv.2021.101482", "license": "cc-by", "publication_types": [ "Journal Article", "Meta-Analysis", "Systematic Review" ], "cited_by_count": 178 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "exercise-34043185", "version": 1, "claim": "Daytime nap opportunities generally improved physical and cognitive performance in physically active people, with longer opportunities showing greater benefits.", "mind_body_angle": { "direction": "body_to_mind", "note": "A sleep opportunity was linked to physical performance and thinking tasks such as attention, reaction time, and memory." }, "population": "Physically active participants and athletes", "intervention_or_exposure": "Daytime nap opportunities", "dose": "90 min was suggested for longer nap opportunities", "comparator": "not reported", "outcome": "Physical performance, reaction time, attention, short-term memory, and fatigue", "effect": "Most studies reported benefits; longer nap opportunities were linked to greater physical and cognitive improvement and less induced fatigue.", "limitations": "The review notes evidence quality, risk of bias, and limited evidence on napping interventions.", "how_to_use": "Consider a daytime nap opportunity when planning activity after insufficient sleep.", "caution": "The suggested 90 min duration rests on limited evidence.", "domain": "exercise", "topic": "naps-and-training", "study_type": "systematic review", "evidence_strength": "moderate", "evidence_strength_basis": "Systematic review without a pooled meta-analysis (PubMed publication type); moderate by rule.", "sources": [ { "pmid": "34043185", "doi": "10.1007/s40279-021-01482-1", "title": "Benefits of Daytime Napping Opportunity on Physical and Cognitive Performances in Physically Active Participants: A Systematic Review.", "journal": "Sports medicine (Auckland, N.Z.)", "year": 2021, "url": "https://pubmed.ncbi.nlm.nih.gov/34043185/", "doi_url": "https://doi.org/10.1007/s40279-021-01482-1", "license": null, "publication_types": [ "Systematic Review", "Journal Article" ], "cited_by_count": 73 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "exercise-35708888", "version": 1, "claim": "Across exercise studies, sleep loss of ≤ 6 h in any 24 h period was associated with lower physical performance, especially for PM tasks.", "mind_body_angle": { "direction": "behavior_habit", "note": "Sleep and exercise timing relate to physical performance; planning a workout around expected sleep loss is a practical interpretation, while psychological outcomes were not measured." }, "population": "Participants in exercise-performance studies; n = 959, 89% male", "intervention_or_exposure": "Sleep loss of ≤ 6 h in any 24 h period", "dose": "≤ 6 h sleep in any 24 h period", "comparator": "Normal sleep of > 6 h in any 24 h period", "outcome": "Performance across exercise categories", "effect": "Mean performance change was a 7.56% decrease. Negative effects were consistent for PM tasks, while AM tasks were largely unaffected.", "limitations": "Results varied by sleep-loss protocol and exercise time; heterogeneity was I2 = 98.1%.", "how_to_use": "If sleep loss is unavoidable, consider scheduling performance-focused exercise in the morning.", "caution": "The pooled result should not be taken as a prediction for an individual workout.", "domain": "exercise", "topic": "training-after-poor-sleep", "study_type": "meta-analysis", "evidence_strength": "moderate", "evidence_strength_basis": "Meta-analysis (PubMed publication type). The abstract does not state how many studies were included, so the rule caps it at moderate.", "sources": [ { "pmid": "35708888", "doi": "10.1007/s40279-022-01706-y", "title": "Effects of Acute Sleep Loss on Physical Performance: A Systematic and Meta-Analytical Review.", "journal": "Sports medicine (Auckland, N.Z.)", "year": 2022, "url": "https://pubmed.ncbi.nlm.nih.gov/35708888/", "doi_url": "https://doi.org/10.1007/s40279-022-01706-y", "license": "cc-by", "publication_types": [ "Meta-Analysis", "Systematic Review", "Journal Article" ], "cited_by_count": 136 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "recovery-29944513", "version": 1, "claim": "In competitive athletes, longer sleep-duration changes were more likely than acute changes to affect performance, particularly in sports demanding speed, tactics, or technical skill.", "mind_body_angle": { "direction": "behavior_habit", "note": "Sleep duration connects a daily habit with physical performance, including sports that demand tactical thinking; the review did not establish an effect of subjective sleep quality." }, "population": "Competitive athletes across 12 sports", "intervention_or_exposure": "Sleep duration and quality, including sleep deprivation and extension", "dose": "not reported", "comparator": "Longer-term versus acute sleep-duration changes", "outcome": "Objective athletic performance", "effect": "Across 19 studies, performance appeared more responsive to longer-term sleep changes and to duration changes in speed, tactical, and technical sports; no pooled effect size was reported.", "limitations": "Few studies examined sleep quality, and findings varied with sport demands and intervention length.", "how_to_use": "Account for sport demands and the length of sleep changes when applying this evidence.", "caution": "Do not generalize the pattern to every sport or infer a performance effect from subjective sleep quality.", "domain": "recovery", "topic": "sleep-and-performance", "study_type": "systematic review", "evidence_strength": "moderate", "evidence_strength_basis": "Systematic review without a pooled meta-analysis (PubMed publication type); moderate by rule.", "sources": [ { "pmid": "29944513", "doi": "10.1097/JSM.0000000000000622", "title": "The Impact of Sleep Duration on Performance Among Competitive Athletes: A Systematic Literature Review.", "journal": "Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine", "year": 2020, "url": "https://pubmed.ncbi.nlm.nih.gov/29944513/", "doi_url": "https://doi.org/10.1097/JSM.0000000000000622", "license": "cc-by-nc-nd", "publication_types": [ "Journal Article", "Systematic Review" ], "cited_by_count": 97 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "recovery-35961644", "version": 1, "claim": "A review recommended massage and cold-water immersion for perceived recovery after football matches, but found no favored method for physical or physiological outcomes.", "mind_body_angle": { "direction": "body_to_mind", "note": "The review distinguishes how recovery feels from measured physical and physiological recovery." }, "population": "Male and female football players or players of other team sports", "intervention_or_exposure": "not reported", "dose": "Up to 72 hours postmatch; session details not reported", "comparator": "not reported", "outcome": "Perceptive, physical, and physiological recovery measures", "effect": "Recommendations favored massage and cold-water immersion for perceptive measures, but favored no method for physical or physiological measures.", "limitations": "Evidence quality varied across methods, and the review identified a need for higher-quality research on physical and physiological recovery.", "how_to_use": "Consider massage or cold-water immersion for perceived recovery after matches without assuming improved physical recovery.", "caution": "The review does not establish benefits for physical or physiological measures.", "domain": "recovery", "topic": "recovery-methods", "study_type": "systematic review", "evidence_strength": "moderate", "evidence_strength_basis": "Systematic review without a pooled meta-analysis (PubMed publication type); moderate by rule.", "sources": [ { "pmid": "35961644", "doi": "10.1123/ijspp.2022-0038", "title": "Analysis of Recovery Methods' Efficacy Applied up to 72 Hours Postmatch in Professional Football: A Systematic Review With Graded Recommendations.", "journal": "International journal of sports physiology and performance", "year": 2022, "url": "https://pubmed.ncbi.nlm.nih.gov/35961644/", "doi_url": "https://doi.org/10.1123/ijspp.2022-0038", "license": null, "publication_types": [ "Journal Article", "Systematic Review" ], "cited_by_count": 32 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." }, { "id": "exercise-28919335", "version": 1, "claim": "Across reviewed studies, chronic resistance exercise improved sleep, especially sleep quality, while acute sleep effects remained uncertain.", "mind_body_angle": { "direction": "body_to_mind", "note": "Resistance exercise was linked with sleep changes and reported improvements in anxiety and depression, connecting physical training with mental well-being." }, "population": "Participants in the included studies; specific populations not reported", "intervention_or_exposure": "Acute and chronic resistance exercise", "dose": "not reported", "comparator": "Aerobic exercise alone and combined resistance plus aerobic exercise", "outcome": "Sleep quantity and quality, anxiety, and depression", "effect": "Chronic resistance exercise improved sleep measures, most strongly sleep quality; training also improved anxiety and depression, while acute sleep findings were inconsistent.", "limitations": "Acute effects were poorly studied; optimal timing and dose, mechanisms, sleep architecture, and effects in clinical cohorts remained unclear.", "how_to_use": "Consider sustained resistance exercise as a possible sleep-supporting habit.", "caution": "Do not assume an immediate sleep benefit or a known optimal exercise schedule.", "domain": "exercise", "topic": "exercise-for-better-sleep", "study_type": "systematic review", "evidence_strength": "moderate", "evidence_strength_basis": "Systematic review without a pooled meta-analysis (PubMed publication type); moderate by rule.", "sources": [ { "pmid": "28919335", "doi": "10.1016/j.smrv.2017.07.002", "title": "The effect of resistance exercise on sleep: A systematic review of randomized controlled trials.", "journal": "Sleep medicine reviews", "year": 2018, "url": "https://pubmed.ncbi.nlm.nih.gov/28919335/", "doi_url": "https://doi.org/10.1016/j.smrv.2017.07.002", "license": null, "publication_types": [ "Journal Article", "Research Support, Non-U.S. Gov't", "Systematic Review" ], "cited_by_count": 240 } ], "creator_views": [], "retraction_status": "none found", "date_checked": "2026-10-18", "checks_passed": [ "numbers_verbatim", "second_model_supported", "program_study_type_and_strength", "retraction_check", "banned_words", "no_copied_sentences", "link_resolves", "schema_valid" ], "curation": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice." } ] } } ], "_lownoise": { "tier": "free-sample", "schema": "https://clear.gaiya365.com/schema/evidence-card.v1.json", "paid_info": "https://clear.gaiya365.com/#pricing", "disclosure": "Curated by AI and automatically checked. No expert human review. Educational only, not medical advice.", "updated": "2026-10-18T06:18:36.394251+00:00" } }