Effects of endurance training on the cardiovascular system and water compartments in elderly subjects.

Effects of endurance training on the cardiovascular system and water compartments in elderly subjects.
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耐力训练对老年受试者心血管系统和水室的影响。

DOI:
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发表时间:
1997
影响因子:
3.3
通讯作者:
J. Coudert
J. Coudert
中科院分区:
医学2区
文献类型:
--
作者:
G. Pickering;N. Fellmann;B. Morio;P. Ritz;A. Amonchot;M. Vermorel;J. Coudert

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研究了耐力训练对10例老年受试者水室和心血管系统的影响[年龄62 +/- 2岁,训练前最大耗氧量(VO2 max)/kg = 25 +/- 2 ml]。最低为1。体重[Kg-1]。他们每周在循环计量器上训练3次,持续16周(最大摄氧量为50-80%,然后是80-85%)。分别于去训练后8周、16周和4个月进行检查。训练提高最大摄氧量(+16%)和诱导血浆体积扩张(+11%)。在这个经过训练的小样本中,体内总水分、细胞外液、间质和细胞内液体积、无脂肪质量和体重没有变化。体脂量减少(-2.1 +/- 2.2 kg)。静息时超声心动图显示左室缩短分数和射血分数升高,收缩末期尺寸减小(P < 0.05)。血容量扩张与心脏收缩力相关,对心功能有影响。然而,这些改善是不稳定的,在去训练4个月后,当老年受试者失去强加协议的约束和社会刺激时,这些改善就会完全消失。
The effects of endurance training on the water compartments and the cardiovascular system were determined in 10 elderly subjects [age 62 +/- 2 yr, pretraining maximal oxygen consumption (VO2 max)/kg = 25 +/- 2 ml . min-1 . kg-1 body wt]. They trained on a cycloergometer 3 times/wk for 16 wk (50-80% VO2 max, then 80-85% VO2 max). They were checked at 8 wk, 16 wk, and 4 mo after detraining. Training improved VO2 max (+16%) and induced plasma volume expansion (+11%). No change in total body water, extracellular fluid, interstitial and intracellular fluid volumes, fat-free mass, and body weight was detected in this small sample with training. Body fat mass decreased (-2.1 +/- 2.2 kg). Echocardiography at rest showed increased fractional shortening and ejection fraction and decreased left ventricular end-systolic dimension (P < 0.05). Blood volume expansion correlates with cardiac contractility and has an impact on cardiac function. These improvements are precarious, however, and are completely lost after 4 mo of detraining, when elderly subjects lose the constraints and the social stimulation of the imposed protocol.
年龄和体力活动水平对血浆去甲肾上腺素动力学的影响。
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发表时间: 1989-11-01
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