Zhang Jian-Guo, Ohta Toshiki, Ishikawa-Takata Kazuko, Tabata Izumi, Miyashita Mitsumasa
Division of Health Promotion and Exercise, National Institute of Health and Nutrition, 1-23-1 Toyama Shinjuku, Tokyo 162-8636, Japan.
Eur J Appl Physiol. 2003 Sep;90(1-2):109-13. doi: 10.1007/s00421-003-0860-0. Epub 2003 Jun 21.
The relationships among walk steps, exercise habits and peak oxygen consumption (VO2peak), ventilatory threshold (VT) and leg extension power (LEP) were examined in 709 apparently healthy Japanese subjects (male 372, female 337) aged 30-69 years. Walk steps were evaluated using a pedometer. VO2peak and VT were assessed by a cycle ergometer test, while LEP was measured with an isokinetic leg extension system (Combi, Anaero Press 3500, Japan). Subjects who participated in exercise three times or more a week demonstrated significantly greater VO2peak and VT when compared with subjects without exercise habits. When a separate analysis was conducted on subjects who exercised fewer than three times per week, we found that the subgroup with the highest number of walk steps showed significantly greater VT in all male subjects and female subjects aged 30-49 years, but a significantly greater VO2peak only in females aged 30-49 years, when compared to the subgroup with the fewest walk steps. These results suggest that although some people exercise less than three times a week, if they are quite active in daily life, such activities might also confer benefits upon their fitness.
在709名年龄在30至69岁之间、看似健康的日本受试者（男性372名，女性337名）中，研究了步行步数、运动习惯与峰值耗氧量（VO2peak）、通气阈值（VT）和腿部伸展力量（LEP）之间的关系。使用计步器评估步行步数。通过自行车测力计测试评估VO2peak和VT，而使用等速腿部伸展系统（Combi，Anaero Press 3500，日本）测量LEP。与没有运动习惯的受试者相比，每周参加三次或更多次运动的受试者表现出明显更高的VO2peak和VT。当对每周运动次数少于三次的受试者进行单独分析时，我们发现，与步行步数最少的亚组相比，步行步数最多的亚组在所有男性受试者以及30至49岁的女性受试者中表现出明显更高的VT，但仅在30至49岁的女性受试者中表现出明显更高的VO2peak。这些结果表明，尽管有些人每周运动次数少于三次，但如果他们在日常生活中相当活跃，此类活动也可能对他们的健康有益。
