a Fukuoka University , Fukuoka , Japan.
J Sports Sci. 2013;31(16):1805-14. doi: 10.1080/02640414.2013.803589. Epub 2013 Jul 23.
The purpose of the present investigation was to examine the relationship between the accumulation of 1000 steps in 10 minutes (1K) and 3000 steps in 30 minutes (3K) with the amount and intensity of daily physical activity. Thirty-three adults (16 males and 17 females, 53 ± 19 years) wore an accelerometer (Lifecorder) for seven consecutive days in order to determine the number of steps and the time spent in physical activity at light intensity (LPA), moderate intensity (MPA), vigorous intensity (VPA) and moderate to vigorous intensity (MVPA). Furthermore, based on the minute-by-minute stepping rate, the number, intensity and duration of walking bouts (1K and 3K) were evaluated. The daily number of steps, LPA, MPA and VPA were significantly higher on the days with 1K or 3K compared with that observed on the days without 1K or 3K (P <0.05). The duration of 1K was not found to be correlated with an MVPA >10 minutes. An MVPA >10 minutes was less than 2 min · day(-1) on the days with 1K or 3K. Therefore, it is doubtful that the concept of cadence is an alternative indicator for the commonly used definition of MVPA. It remains unclear whether participation in 1K and 3K guarantees that an individual will meet the current MVPA guidelines.
本研究旨在探讨 10 分钟内积累 1000 步（1K）和 30 分钟内积累 3000 步（3K）与日常体力活动量和强度的关系。33 名成年人（男性 16 名，女性 17 名，53 ± 19 岁）连续佩戴加速度计（Lifecorder）7 天，以确定步数和轻强度（LPA）、中强度（MPA）、剧烈强度（VPA）和中高强度（MVPA）下的活动时间。此外，根据每分钟的步频，评估了 1K 和 3K 的次数、强度和持续时间。与无 1K 或 3K 的天数相比，有 1K 或 3K 的天数每日步数、LPA、MPA 和 VPA 明显更高（P<0.05）。未发现 1K 的持续时间与 MVPA>10 分钟有关。在有 1K 或 3K 的日子里，MVPA>10 分钟的时间少于 2 分钟·天(-1)。因此，步频概念是否是常用的 MVPA 定义的替代指标值得怀疑。目前尚不清楚参与 1K 和 3K 是否能保证个人达到当前的 MVPA 指南。
