Prolonged recovery from eccentric versus concentric exercise.
In order to determine whether exercise mode affects recovery energy expenditure, 7 active men (average age 25 yrs) performed a control rest and three submaximal exercise bouts in counterbalanced order in separate weeks. The bouts, designed to involve three levels of eccentric muscular activity, included 60% VO2max jog (60 J), 60% downhill (-5%) jog (60 DH), 60% cycling (60 C), and a control session. Following a 24-hr period of regulated activity and diet, subjects exercised for 60 min. VO2 and RER were assessed during 48 hrs of regulated recovery. Total energy use was elevated following 60 C and 60 DH versus control, and fat energy use was elevated following 60 J, 60 DH, and 60 C versus control. For combined trials, the total energy use was higher at 1, 2, and 9 hrs postexercise. These results do not support the hypothesis that eccentric muscular activity affects the magnitude of recovery energy expenditure.
Department of Health and Exercise Sciences, University of Missouri, Columbia 65211.
T R
TR
Thomas
B R
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Londeree
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Lawson
D000328:Adult; D001642:Bicycling / Q000502:physiology*; D004032:Diet; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D007590:Jogging / Q000502:physiology*; D050356:Lipid Metabolism; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D009132:Muscles / Q000503:physiopathology; D010101:Oxygen Consumption / Q000502:physiology; D010146:Pain / Q000503:physiopathology; D005082:Physical Exertion / Q000502:physiology; D012119:Respiration / Q000502:physiology; D012146:Rest / Q000502:physiology; D012420:Running / Q000502:physiology