Yearlong pliysical activity and health-related quality of life in older Japanese adults : new guidelines for exercise

背景：我们假设在健康的老年人群中，临床相关的健康相关生活质量（HRQOL）评分的增加与日常体力活动的强度和总量呈正相关。方法：这些假设在来自日本中野市的74名男性和109名女性志愿者中进行了验证。年龄在65-85岁之间；协方差分析校正年龄对HRQOL的影响。在一年的时间里，每天都可以获得身体活动的定量测量，使用一种特殊的加速度计来区分11种强度的身体活动。HRQOL的评估采用了日本版的医学结果研究简表（SF-36）问卷。结果：结果证实了我们的假设；在符合最低标准的习惯性身体活动的受试者中，HRQOL更高：男性每天5511步或更多，每天至少12.9分钟，强度为>代谢当量（METs），女性每天4552步和/或每天15.0分钟，强度为>代谢当量（METs）。结论：我们得出的结论是，老年人的HRQOL得分在达到最低标准的习惯性体育活动中较高，老年人应该被鼓励达到这样的标准，即使他们的大部分活动只是在低或中等强度。

Background : We hypothesized that in a healthy elderly population, a clinically relevant increase in health-related quality of life(HRQOL) score would be positively associated with a greater intensity and total volume of daily physical activity.Methods : These hypotheses were tested in a cohort of 74 male and 109 female volunteers from the town of Nakanojo, Japan. Ages ranged from 65-85 years ; analyses of covariance adjusted for the effects of age upon HRQOL. Quantitative measurements of physical activity were obtained daily for one year, using a specially adapted accelerometer that distinguished 11 intensities of physical activity. HRQOL was assessed by a Japanese adaptation of the Medical Outcomes Study Short Form (SF-36) questionnaire.Results : The results confirmed our hypotheses ; HRQOL was greater in the quartile of subjects meeting minimum standards of habitual physical activity : in men 5511 or more steps per day and/or at least 12.9 min per day at an intensity >3 metabolic equivalents(METs), and in women >4552 steps per day and/or >15.0 min per day at an intensity >3 METs.Conclusions : We conclude that HRQOL scores are higher in elderly individuals who meet minimum standards of habitual physical activity, and that the elderly should be encouraged to meet such standards, even if much of their activity is at only a low or moderate intensity.