Kitagawa K, Suzuki M, Miyashita M
Eur J Appl Physiol Occup Physiol. 1980;43(3):229-34. doi: 10.1007/BF00421836.
Anaerobic power output was measured by the staircase climb test in 14 obese, 16 lean, and 21 ordinary men aged from 18--22 years. Fat storage rate (%fat) was estimated by densitometry. The obese group ranked highest with an average power output of 1,012 W. This value was significantly higher than those of the other two groups, 890 W for lean subjects and 855 W for ordinary subjects. The power output per kilogram of lean body mass of the obese group was the highest also. However, the vertical velocity was the lowest although the difference among the three average values was not statistically significant. To investigate the effect of excess fat, eight non-obese subjects engaged in an added-weight experiment. The value obtained was almost the same as for the obese group. The added weights made the vertical velocity decrease but the power output increase. Consequently, it was obvious that the excess fat of an obese man played a role only as an inert mass in the power output measurement. A significantly higher power output of the obese group might be due to more excess fat, and obesity itself was an advantage in the staircase climb test.
对14名肥胖男性、16名瘦体重男性和21名年龄在18至22岁之间的普通男性，通过爬楼梯试验测量无氧功率输出。通过密度测定法估算脂肪储存率（%脂肪）。肥胖组的平均功率输出为1012瓦，排名最高。该值显著高于其他两组，瘦体重受试者为890瓦，普通受试者为855瓦。肥胖组每千克去脂体重的功率输出也是最高的。然而，垂直速度最低，尽管三个平均值之间的差异无统计学意义。为了研究多余脂肪的影响，对8名非肥胖受试者进行了负重实验。得到的值与肥胖组几乎相同。增加的重量使垂直速度降低，但功率输出增加。因此，很明显，肥胖男性的多余脂肪在功率输出测量中仅起到惰性质量的作用。肥胖组显著更高的功率输出可能归因于更多的多余脂肪，并且肥胖本身在爬楼梯试验中是一个优势。
