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  • Title: Associations between self-estimated and measured physical fitness among 40-year-old men and women.
    Author: Mikkelsson L, Kaprio J, Kautiainen H, Kujala UM, Nupponen H.
    Journal: Scand J Med Sci Sports; 2005 Oct; 15(5):329-35. PubMed ID: 16181257.
    Abstract:
    The aim was to evaluate whether 40-year-old men and women are able to estimate their level of fitness compared with actual measured physical fitness. Twenty-nine men and 35 women first completed a questionnaire at home and then their physical fitness was measured at laboratory. The index of self-estimated physical fitness was calculated by summing up the scores of self-estimated endurance, strength, speed and flexibility. The index of self-estimated endurance was calculated by summing up the scores of self-estimated endurance and those of the self-estimated distance they could run, cycle, ski and walk. The index of measured physical fitness was calculated by summing up the z-scores of a submaximal bicycle ergometer test, ergojump tests (counter-movement jump and jumping in 15 s), a 30-s sit-up test, hand-grip tests and a sit-and-reach test. The correlation (Spearman) between the indices of self-estimated and measured physical fitness was 0.54 for both sexes, and that between self-estimated endurance and measured endurance was 0.53 for both sexes. Maximal oxygen uptake estimated based on submaximal ergometer test was higher among those with longer self-estimated distance of running, cycling, skiing and walking (P for linear trend <0.001). Our study shows that 40-year-old adults can estimate at group level their fitness according to different categories moderately well. They can also estimate at group level their endurance moderately well by estimating the distance they can run, cycle, ski or walk. However, in some individuals self-estimation of fitness is not in agreement with the results of fitness tests.
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