How Tired You Get Affects How Fast You Get After Rest
Functional overreaching: the key to peak performance during the taper?
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
When triathletes train really hard, some get tired but still perform well, while others get too tired and perform worse. After resting, the ones who were just tired got faster, but the ones who were too tired didn’t improve much and got sick more often.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
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Max 72Case-Control Studies
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Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
When triathletes train really hard, some get tired but still perform well, while others get too tired and perform worse. After resting, the ones who were just tired got faster, but the ones who were too tired didn’t improve much and got sick more often.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 554 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Publication
Authors
Aubry A, Hausswirth C, Louis J, Coutts AJ, LE Meur Y
Related Content
Claims (5)
When male triathletes take a break from intense training, most hit their best performance in the first two weeks, even if they were really worn out before — heavy training doesn’t seem to delay their recovery during this rest period.
If triathletes feel tired but still perform well during intense training, they tend to bounce back stronger after a rest period—gaining about 2.6% more peak performance—compared to those who push too hard and burn out.
If triathletes train too hard for three weeks and get overly tired, they don’t get better at using oxygen when they cut back to rest—unlike those who aren’t overdoing it, who do get noticeably better.
Triathletes who push their training too hard without enough recovery are way more likely to get sick—7 out of 10 had infection symptoms, compared to just 2 out of 10 who were tired but not overtrained, and 1 out of 10 in rested athletes.
When athletes push too hard, their performance might dip at first — but if it's 'functional' overreaching, they bounce back stronger. If it's 'non-functional,' they stay weak even after resting.