EFFECTS OF ROWING ON HEALTH PROMOTION IN OLDER PEOPLE

我们评估了年龄和赛艇对心血管功能、血脂-脂蛋白谱和肌肉质量的影响。尽管老年划桨手的VO2max低于年轻划桨手，但他们的VO2max与年轻久坐的人相似，但高于年长的久坐的人。老年桨手的冠心病危险因素指数(低密度脂蛋白/高密度脂蛋白胆固醇)低于久坐不动的老年男子。研究结果表明，赛艇运动是一种适宜的健身运动类型。同时，我们还评价了赛艇运动对老年人腿部肌肉形态和功能的影响。桨手的腿部伸肌面积(CSA)大于久坐者。划桨运动员的双侧伸腿力量大于久坐男子。因此，两组之间每个CSA的腿部伸肌力量没有差异。结果表明，划船可以防止与年龄相关的肌肉萎缩和虚弱。这项研究评估了老年人在功率划船(手臂和腿相结合；坐着锻炼)和跑步机跑步(腿；直立锻炼)过程中的摄氧量(Vo2)和心率(HR)。在血乳酸浓度为4 mM时，功率划船运动的心率低于跑台运动(151±4次/分比160±5次/分)，最大力竭运动时的心率(171±7次/分比177±7次/分)要低。尽管在4 mM血乳酸浓度(3·0±0·4/分钟比2·7±0·4 L/分钟)和最大努力时(3·4±0·4 L/分钟比3·1±0·3 L/分钟)，赛艇运动中的VO2高于跑台运动。结果提示，在老年人赛艇运动处方中，应考虑赛艇时HR与VO2的关系，以及赛艇对HR反应的减弱。

We evaluated effects of age and rowing on cardiovascular function, blood lipid-lipoprotein profile and muscle mass. Although older oarsmen possessed a lower Vo2max than the young oarsmen, they showed a Vo2max similar to that of the young sedentary men but a higher value than obtained from the older sedentary men. The index of risk factors for CHD in the older oarsmen (LDL-C/HDL-C) was lower than that in the sedentary older men. The results suggest that rowing is an appropriate type of exercise for the promotion of health.We also evaluated the effects of rowing on the morphology and function of the leg muscle in older people. The leg extensor muscle area (CSA) of the oarsmen was larger that that of the sedentary men. Also the bilateral leg extension power of the oarsmen was larger than that of the sedentary men. Thus, the leg extensor power per CSA was not different between the two groups. The results suggest that rowing prevents age-related muscle wasting and weakness.This study evaluated oxygen uptake (Vo2) and heart rate (HR) during ergometry rowing (combined arm and leg ; sitting exercise) and treadmill running (leg ; upright exercise) for older people. The HR was lower during ergometry rowing than during treadmill running at a blood lactate concentration of 4mM (151±4 bpm vs. 160±5 bpm) and at a maximal effort (171±7 bpm vs. 177±7 bpm). This was the case although the Vo2 was higher during ergometry rowing than during treadmill running both at a blood lactate concentration of 4mM (3.0±0.4 /min vs. 2.7±0.4 L/min) and at a maximal effort (3.4±0.4 L/min vs. 3.1±0.3 L/min). The results suggest that, in prescription of rowing for older people, the relation between HR and Vo2 for rowing and the attenuated HR response to rowing should be taken into consideration.