School of Health and Sports Science, Juntendo University, Inba, Chiba, Japan.
J Cardiopulm Rehabil Prev. 2010 Mar-Apr;30(2):111-5. doi: 10.1097/HCR.0b013e3181be7c80.
The effects of self-monitoring number of steps/day versus minutes of moderate to vigorous-intensity physical activity (MVPA/day) were compared to determine which is more effective for increasing physical activity levels.
A total of 18 participants of a university-based chronic disease prevention program (age 61 +/- 12 years) were enrolled in the 3-week intervention. Subjects were randomly assigned to a group (n = 8) that wore a New Lifestyles accelerometer (NL-1000) and were instructed to increase minutes of MVPA to 30 min/d or more (MIN) or to a group (n = 10) that wore a New Lifestyles pedometer (NL-800) and were instructed to increase the number of steps/day to 10,000 or more (STE). To objectively assess changes in physical activity levels, subjects in both groups simultaneously wore a Lifecorder-EX accelerometer (with display blank) during the intervention.
The number of steps increased significantly in the MIN (10,810 +/-3,211 to 13,355 +/- 3,498 steps/day) and STE (11,517 +/- 3,383 to 12,809 +/-2,479 steps/day) from the first to fourth weeks, respectively. However, the time spent in MVPA increased significantly only in MIN group (36 +/- 11 to 52 +/- 15 min/d) but not in the STE group (32 +/- 7 to 37 +/- 11 min/d) from the first to fourth weeks, respectively.
Data suggest that individuals with chronic disease conditions can more effectively increase levels of physical activity, expressed as both MVPA/day and steps/day, by self-monitoring MIN rather than STE. The effect of self-monitoring physical activity levels for longer periods and/or the effect of increasing minutes of MVPA/day versus steps/day on specific health outcomes have not yet been examined.
比较自我监测每日步数与中等至剧烈强度体力活动（MVPA）分钟数的效果，以确定哪种方法更能有效提高体力活动水平。
共有 18 名参加大学慢性病预防计划的参与者（年龄 61 +/- 12 岁）参与了为期 3 周的干预。参与者被随机分配到一个小组（n = 8），佩戴 New Lifestyles 加速度计（NL-1000），并被指示将 MVPA 分钟数增加到 30 分钟/天或更多（MIN），或分配到一个小组（n = 10），佩戴 New Lifestyles 计步器（NL-800），并被指示将每日步数增加到 10,000 步或更多（STE）。为了客观评估体力活动水平的变化，两组参与者在干预期间同时佩戴 Lifecorder-EX 加速度计（显示屏空白）。
MIN 组（从第一周到第四周，分别从 10,810 +/-3,211 步增加到 13,355 +/- 3,498 步/天）和 STE 组（从第一周到第四周，分别从 11,517 +/-3,383 步增加到 12,809 +/-2,479 步/天）的步数显著增加。然而，只有 MIN 组（从第一周到第四周，分别从 36 +/-11 分钟增加到 52 +/- 15 分钟/天）的 MVPA 时间显著增加，而 STE 组（从第一周到第四周，分别从 32 +/-7 分钟增加到 37 +/-11 分钟/天）的 MVPA 时间没有显著增加。
数据表明，患有慢性病的个体可以通过自我监测 MIN（而不是 STE）更有效地提高体力活动水平，表现为每日 MVPA 和步数。自我监测体力活动水平的时间长短、增加每日 MVPA 分钟数与步数对特定健康结果的影响尚未得到检验。
