Dinger Mary K, Behrens Timothy K
Department of Health and Exercise Science, University of Oklahoma, Huston Huffman Center 117, Norman, OK 73019-6081, USA.
Med Sci Sports Exerc. 2006 Apr;38(4):774-9. doi: 10.1249/01.mss.0000210191.72081.43.
This study was conducted to provide descriptive data of accelerometer-determined ambulatory physical activity in a sample of free-living college students and to examine college students' ambulatory physical activity patterns.
All participants (245 females, age = 19.9 +/- 1.6 yr, body mass index (BMI) = 22.9 +/- 3.3 kg x m(-2); 209 males, age = 20.2 +/- 2.0 yr, BMI = 25.2 +/- 4.0 kg x m(-2)) wore an accelerometer for seven consecutive days. Accumulated physical activity (ct.d, ct x min(-1) x d(-1), and min x d(-1) spent at different intensities) and minutes per day spent in moderate or vigorous physical activity in sessions of at least 10 min were analyzed to describe the physical activity of the sample and examine physical activity patterns.
The entire sample accumulated 362,750.1 +/- 112,824.1 ct x d(-1) (males = 383,787.2 +/- 112,001.3 vs females = 344,804.1 +/- 110,619.5 ct x d(-1), P < 0.01) and 46.7 +/- 18.9 min x d(-1) in moderate physical activity (males = 51.7 +/- 19.8 vs females = 42.5 +/- 17.0 min x d(-1), P < 0.01). They were more active on weekdays than weekend days (P < 0.05), and they spent 13.6 +/- 12.7 min x d(-1) (males = 13.2 +/- 12.0 vs females = 13.8 +/- 13.3, P > 0.05) in moderate or vigorous physical activity sessions of at least 10 min.
Participants in this study accumulated a moderate amount of physical activity on most weekdays. Most participants, however, were not meeting the current moderate physical activity recommendation when moderate or vigorous physical activity sessions of at least 10 min were examined.
本研究旨在提供自由生活的大学生样本中通过加速度计测定的日常身体活动的描述性数据，并研究大学生的日常身体活动模式。
所有参与者（245名女性，年龄=19.9±1.6岁，体重指数（BMI）=22.9±3.3kg·m⁻²；209名男性，年龄=20.2±2.0岁，BMI=25.2±4.0kg·m⁻²）连续七天佩戴加速度计。分析累积身体活动量（计数·天，计数×分钟⁻¹×天⁻¹，以及在不同强度下花费的分钟数·天）和每天在至少10分钟的中等强度或剧烈身体活动中花费的分钟数，以描述样本的身体活动情况并研究身体活动模式。
整个样本累积362,750.1±112,824.1计数×天⁻¹（男性=383,787.2±112,001.3，女性=344,804.1±110,619.5计数×天⁻¹，P<0.01），中等强度身体活动累积46.7±18.9分钟×天⁻¹（男性=51.7±19.8，女性=42.5±17.0分钟×天⁻¹，P<0.01）。他们在工作日比周末更活跃（P<0.05），并且在至少10分钟的中等强度或剧烈身体活动中每天花费13.6±12.7分钟×天⁻¹（男性=13.2±12.0，女性=13.8±13.3，P>0.05）。
本研究中的参与者在大多数工作日累积了适量的身体活动。然而，当检查至少10分钟的中等强度或剧烈身体活动时，大多数参与者未达到当前的中等强度身体活动建议。
