儿童在平地上行走时对背包负荷的步态和姿势反应。
Gait and posture responses to backpack load during level walking in children.
作者信息
Hong Youlian, Cheung Chi-Kin
机构信息
Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
出版信息
Gait Posture. 2003 Feb;17(1):28-33. doi: 10.1016/s0966-6362(02)00050-4.
Eleven primary school boys aged between 9 and 10 years old completed carrying backpack loads of 0, 10, 15, and 20% of their body weight while level walking using natural cadence. Stride and temporal parameters, trunk lean angles and trunk motion range were analyzed. The results showed that both the backpack load and walking distance exerted no significant influence on stride and temporal parameters. However, when compared with the 0, 10 and 15% load conditions, the 20% load induced a significant increase (P<0.05) in trunk inclination. If trunk inclination is taken as the criteria to determine permissible backpack loads for children, those loads should not exceed 15% body weight. In addition, walking distance should be considered when permissible loads are determined.
11名年龄在9至10岁之间的小学男生，以自然步频在平路上行走时，分别背负了体重0%、10%、15%和20%的背包负荷。对步幅和时间参数、躯干倾斜角度以及躯干运动范围进行了分析。结果表明，背包负荷和步行距离对步幅和时间参数均无显著影响。然而，与0%、10%和15%负荷条件相比，20%负荷导致躯干倾斜显著增加（P<0.05）。如果将躯干倾斜作为确定儿童可承受背包负荷的标准，那么这些负荷不应超过体重的15%。此外，在确定可承受负荷时应考虑步行距离。
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