Suminski Richard R, Poston Walker C, Market Patrick, Hyder Melissa, Sara Pyle A
Kansas City University of Medicine and Biosciences, MO 64106, USA.
Int J Biometeorol. 2008 Jan;52(3):189-97. doi: 10.1007/s00484-007-0110-y. Epub 2007 Jun 14.
Meteorological conditions (MC) are believed to modify physical activity. However, studies in this area are limited and none have looked at the associations between MC and physical activity in open-air settings. Therefore, we examined the relationships between MC and physical activities performed on sidewalks/streets and outdoor oval tracks. Observation techniques were used to count individuals walking to school, exercising on oval tracks and walking/jogging/biking on sidewalks/streets. Meteorological conditions were obtained from an Automated Surface Observing System located at a nearby airport for the same time periods physical activities were observed. On weekdays, fewer children were seen walking to school and more bicyclists were observed on sidewalks/streets as wind speed increased (p < 0.05). Ambient and apparent temperatures were positively (p < 0.05) and humidity and barometric pressure negatively (p < 0.005) related to the number of individuals walking on the track. Meteorological conditions were not significantly associated with physical activities observed on weekends. Multiple linear regression analyses showed that apparent temperature (+), barometric pressure (-) and dew point (-) accounted for 58.0% of the variance in the number of walkers on the track. A significant proportion of the variance (>30%) in the number of joggers and the length of time they jogged was accounted for by apparent temperature (+) and dew point (-). We found that meteorological conditions are related to physical activity in open-air settings. The results embellish the context in which environmental-physical activity relationships should be interpreted and provide important information for researchers applying the observation method in open-air settings.
人们认为气象条件（MC）会改变身体活动。然而，该领域的研究有限，且尚无研究探讨过气象条件与户外环境中身体活动之间的关联。因此，我们研究了气象条件与在人行道/街道以及户外椭圆形跑道上进行的身体活动之间的关系。我们采用观察技术来统计步行上学的人数、在椭圆形跑道上锻炼的人数以及在人行道/街道上行走/慢跑/骑自行车的人数。气象条件数据来自附近机场的自动地面观测系统，其时间与观察身体活动的时间段相同。在工作日，随着风速增加，步行上学的儿童减少，在人行道/街道上观察到的骑自行车的人增多（p < 0.05）。环境温度和体感温度与在跑道上行走的人数呈正相关（p < 0.05），湿度和气压与在跑道上行走的人数呈负相关（p < 0.005）。气象条件与周末观察到的身体活动没有显著关联。多元线性回归分析表明，体感温度（+）、气压（-）和露点（-）解释了跑道上步行人数变化的58.0%。体感温度（+）和露点（-）解释了慢跑者人数及其慢跑时长变化的很大一部分（>30%）。我们发现气象条件与户外环境中的身体活动有关。这些结果丰富了环境与身体活动关系的解读背景，并为在户外环境中应用观察方法的研究人员提供了重要信息。
