Original title: Beyond the Biological Clock: A Life-Course and Performance Analysis of Masters Swimming World Championships Participation
The researchers looked at race results from three Masters World Championships and counted event performances by age group. They found that participation fell from age 27 to about 37, rose to a peak around age 52, and then fell again. Race times got slower with age, with the rate of slowing increasing at different ages across groups. So the ages when people compete most do not simply mirror the ages when they swim fastest.
Imagine a community pool where the number of people signing up for races drops, then grows, then drops again as swimmers get older. Meanwhile, their race times keep getting slower with age. In this paper, the sign-ups stand for participation and the times stand for performance: the two age patterns do not rise and fall together.
For swimmers and the people who support them, age does not tell one simple story: participation rises into the early fifties while performance declines. The finding suggests that who keeps competing may be shaped by more than physical ability, though this study does not test why.
The study uses championship records and counts individual-event performances, not unique swimmers. It is retrospective and observational, so it cannot establish why participation follows this pattern or whether life-course and social factors cause it. The estimated ages where performance deterioration speeds up are approximate, vary by group, and are not precise physiological thresholds. The proposed explanation needs individual-level longitudinal data.
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Beyond the Biological Clock: A Life-Course and Performance Analysis of Masters Swimming World Championships Participation — Sabrina Demarie, Alessandro Scotto di Palumbo, Flavia Guidotti et al. — Sports — doi:10.3390/sports14100430
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.