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Journal Article

Citation

De Geus B, Joncheere J, Meeusen R. Scand. J. Med. Sci. Sports 2009; 19(2): 179-187.

Copyright

(Copyright © 2009, John Wiley and Sons)

DOI

10.1111/j.1600-0838.2008.00776.x

PMID

unavailable

Abstract

The purpose was to examine (1) the effect of cycling to work on physical performance; (2) the minimum weekly energy expenditure needed for fitness improvement based on the dose–response relationship between total caloric expenditure and fitness changes. Healthy, untrained men and women, who did not cycle to work, participated in a 1‐year intervention study. Sixty‐five subjects were asked to cycle to work at least three times a week. Fifteen subjects were asked not to change their living habits. All measurements were performed on three consecutive occasions, with 6 months in between. Maximal external power (Pmax), heart rate, respiratory exchange ratio and peak oxygen uptake (VO2peak) were assessed. Cycling characteristics and leisure time physical activities were reported in a dairy. A significant change over time between both groups was seen for VO2peak (/kg) in the total group and the women and for Pmax in the total group. Correlations were found between VO2peak (/kg) (r≥0.40) and kcal/week and min/week. Preliminary results indicate that the minimum expended energy needed for the improvement of indexes of fitness is higher for men compared with women.

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