Journal
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
Volume 26, Issue 8, Pages 2087-2095Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1519/JSC.0b013e31823b874c
Keywords
swimming; performance; blood lipids; resting metabolic rate; mood state
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Ormsbee, MJ and Arciero, PJ. Detraining increases body fat and weight and decreases (V) over dotO(2)peak and metabolic rate. J Strength Cond Res 26(8): 2087-2095, 2012-Competitive collegiate swimmers commonly take a month off from swim training after their last major competition. This abrupt cessation of intense physical training has not been well studied and may lead to physiopsychological decline. The purpose of this investigation was to examine the effects of swim detraining (DT) on body composition, aerobic fitness, resting metabolism, mood state, and blood lipids in collegiate swimmers. Eight healthy endurance-trained swimmers ((V) over dotO(2)peak, 46.7 +/- 10.8 ml.kg(-1).min(-1)) performed 2 identical test days, 1 in the trained (TR) state and 1 in the detrained (similar to 5 weeks) state (DT). Body composition and circumferences, maximal oxygen consumption ((V) over dotO(2)peak),resting metabolism (RMR), blood lipids, and mood state were measured. After DT, body weight (TR, 68.9 +/- 9.7 vs. DT, 69.8 +/- 9.8 kg; p = 0.03), fat mass (TR, 14.7 +/- 7.6 vs. DT, 16.5 +/- 7.4 kg; p = 0.001), and waist circumference (TR, 72.7 +/- 3.1 vs. DT, 73.8 +/- 3.6 cm; p = 0.03) increased, whereas (V) over dotO(2)peak (TR, 46.7 +/- 10.8 vs. DT, 43.1 +/- 10.3 ml.kg(-1).min(-1); p = 0.02) and RMR (TR, 1.34 +/- 0.2 vs. DT, 1.25 +/- 0.17 kcal.min(-1); p = 0.008) decreased, and plasma triglycerides showed a trend to increase (p = 0.065). Our data suggest that DT after a competitive collegiate swim season adversely affects body composition, fitness, and metabolism. Athletes and coaches need to be aware of the negative consequences of detraining from swimming, and plan off-season training schedules accordingly to allow for adequate rest/recovery and prevent overuse injuries. It's equally important to mitigate the negative effects on body composition, aerobic fitness and metabolism so performance may continue to improve over the long term.
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