<Originals>An Exercise Model for Evaluating Inactive Muscle Tissue Temperature Transients
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概要
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KENNY, G.p., REARDON, F.D., DUCHARME, M.B., REARDON, M.L. and ZALESKI, W., An Exercise Model for Evaluating Inactive Muscle Tissue Temperature Transients. Adv. Exerc. Sports Physiol., Vol.7, No.1 pp21-26, 2001. This study was designed to evaluate the role of non-active tissue in the retention and dissipation of heat during and following intense isolated muscle activity. Six subjects performed and incremental isotomic test on a KIN-COM isokinetic apparatus to determine their maximal oxygen consumption during single knee extensions (VO2sp). In a dundrquent session, a thin wire multisensor temperature probe was insetned into the left wastus medialis under nltrasound guidance at specific internal marker. The deepsest temperature sensor (tip. Tmu10) was located ~10 mm from the femur and deep femoral artery with 2 sensors located at 15 (T mu25) and 30 (T mu40) mm from the tip. Inplant site was midway between and medial to a line joining the anterior superior iliac spine and base of patella. Esochoageal temperature (Tes) was measured as an index of core temperature. Subjects rested in a supine position for 60 min followed by 30 min of seated rest in an ambient condition of 22℃. Subjects then performed 13 min of isolated single right knee extensions against a dynamic resistance on a KIN COM corresponding to 60% sec-1. Exercise was followed bu 60 min of seater rest. REsting Tes was 37.01 while Tmu10 Tmu25 and Tmu40 were 36.58, 36.56 and 36.45℃ respectibely. Exercise resulted in a Tes increase of 0.29℃ above pre-exercise resting. Tmu of the non-exercising leg increased 0.22 and 0.18 and 0.11℃ for tmu10 Tmu25 and Tmu40 respectively. While Tes decreased to baseline values within ~20 min of end-exercise. Tmu10 reached resting values following ~50 min of recovery. These results suggest that during isolated muscle activity, convective heat transfer by the blood to non-active muscle tissue may have a significant role in maintaining resting core temperature.
著者
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Reardon F.d
University Of Ottawa Faculty Of Health Sciences And
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Kenny G.P
University of Ottawa,Faculty of Health Sciences and
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Ducharme M.B
University of Ottawa,Faculty of Health Sciences and
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Kenny G.p
University Of Ottawa Faculty Of Health Sciences And
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Ducharme M.b
University Of Ottawa Faculty Of Health Sciences And
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Kenny G.
University of Ottawa,Faculty of Health Sciences and
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Reardon F.
University of Ottawa,Faculty of Health Sciences and
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Ducharme M.
University of Ottawa,Faculty of Health Sciences and
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Reardon M.I
Faculty of Medicine, Ottawa
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Zakeski W
Faculty of Medicine, Ottawa