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.
Thomas
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TR
Department of Health and Exercise Sciences, University of Missouri, Columbia 65211.
Londeree
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BR
Lawson
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DA
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