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. 2003 Feb;94(2):764-9.
doi: 10.1152/japplphysiol.00438.2002. Epub 2002 Oct 18.

Declines in physiological functional capacity with age: a longitudinal study in peak swimming performance

Anthony J Donato  1 , Kathleen Tench, Deborah H Glueck, Douglas R Seals, Iratxe Eskurza, Hirofumi Tanaka
Affiliations

Declines in physiological functional capacity with age: a longitudinal study in peak swimming performance

Anthony J Donato et al. J Appl Physiol (1985). 2003 Feb.

Abstract

We followed up swimming performance times of 321 women and 319 men who participated in the US Masters Swimming Championships over a 12-yr period. All swimmers placed in the top 10 in their age group over 3 yr (mean = 5 yr). A random coefficients model for repeated measures was used to derive a line of best fit from a group of regression lines for each subject. Both 50- and 1,500-m swimming performance declined modestly until approximately 70 yr of age, where a more rapid decline was observed in both men and women. Compared with 1,500-m swimming, the 50-m freestyle declined more modestly and slowly with age. The rate and magnitude of declines in swimming performance with age were greater in women than in men in 50-m freestyle; such sex-related differences were not observed in 1,500-m freestyle. Overall, the variability along a population regression line increased markedly with advancing age. The present longitudinal findings indicate that 1) swimming performance declines progressively until age 70, where the decrease becomes quadratic; 2) the rates of the decline in swimming performance with age are greater in a long-duration than in a short-duration event, suggesting a relatively smaller loss of anaerobic muscular power with age compared with cardiovascular endurance; 3) the age-related rates of decline are greater in women than in men only in a short-duration event; and 4) the variability of the age-related decline in performance increases markedly with advancing age.

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Figures

Fig. 1
Fig. 1
US Masters Swimming 1,500-m freestyle performance times with advancing age. A: mean (population) quadratic line and 95% confidence intervals. B: average quadratic line and individual regression lines. Pink identifies women, and blue identifies men.
Fig. 2
Fig. 2
US Masters Swimming 50-m freestyle performance times with advancing age. A: mean (population) quadratic line and 95% confidence intervals. B: average quadratic line and individual regression lines. Pink identifies women, and blue identifies men.
Fig. 3
Fig. 3
The instantaneous (relative) rate of changes in swimming performance times in relation to the present fastest world record time.
See this image and copyright information in PMC

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