Parise Carol, Sternfeld Barbara, Samuels Steven, Tager Ira B
Graduate Group in Epidemiology, University of California at Davis, Davis, California, USA.
J Am Geriatr Soc. 2004 Mar;52(3):411-6. doi: 10.1046/j.0002-8614.2003.52114.x.
To determine the self-selected exercise intensity of older adults who report that they walk briskly for exercise. An additional aim of the study was to assess the contribution of self-reported physical activity to self-selected exercise intensity.
Observational.
walking path.
Subjects consisted of 212 participants in the Study of Physical Performance and Age-Related Changes in Sonomans who stated in a detailed home interview that they walked briskly for exercise.
Observed brisk walking speed was measured as the time it took participants to walk half a mile at "normal brisk walking speed." Self-reported physical activity was categorized as metabolic equivalent of the task (MET) in minutes of exercise reported in the previous 7 days. Physiological measures and body composition were obtained through laboratory evaluation.
Men walked at an average speed+/-standard deviation of 5.72+/-0.69 km/h and women walked at an average speed of 5.54+/-0.64 km/h. Self-reported physical activity was not associated with brisk walking speed when adjusted for age and ratio of lean to fat mass.
This study found that older adults who report that they walk briskly for exercise do so at a pace considered moderate or greater in absolute intensity as indicated by their walking speed (4.83 km/h). Ninety-eight percent of men (93/95) and 97% of women (113/117) had an observed walking speed equivalent to 3 or more METs based on their calculated walking speed.
确定那些自称通过轻快步行进行锻炼的老年人自我选择的运动强度。该研究的另一个目的是评估自我报告的身体活动对自我选择的运动强度的贡献。
观察性研究。
步行路径。
研究对象包括212名索诺马县身体机能与年龄相关变化研究的参与者，他们在详细的家庭访谈中表示自己通过轻快步行进行锻炼。
观察到的轻快步行速度通过参与者以“正常轻快步行速度”走完半英里所需的时间来测量。自我报告的身体活动在前7天报告的运动分钟数中被分类为代谢当量任务（MET）。通过实验室评估获得生理指标和身体成分。
男性的平均步行速度±标准差为5.72±0.69千米/小时，女性的平均步行速度为5.54±0.64千米/小时。在根据年龄和瘦脂肪质量比进行调整后，自我报告的身体活动与轻快步行速度无关。
本研究发现，那些自称通过轻快步行进行锻炼的老年人，其步行速度（4.83千米/小时）表明他们以绝对强度适中或更高的速度行走。根据计算出的步行速度，98%的男性（93/95）和97%的女性（113/117）观察到的步行速度相当于3个或更多的代谢当量。
