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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Youlian Hong Jingxian Li Wong, A.S.K. |
| Copyright Year | 1998 |
| Description | Author affiliation: Dept. of Sports Sci. & Phys. Educ., Chinese Univ. of Hong Kong, Shatin, Hong Kong (Youlian Hong) |
| Abstract | This study determined the relative human working intensity of children walking with different loads. Fifteen male children, aged 12, were selected from a primary school to carry school bags of 10, 15 and 20% of their body weights, and no load was used as control. Maximal oxygen uptake (VO/sub 2/max) of every subject were measured on a motorized treadmill using a continuous incremental protocol. In the load carriage test, subjects walked at 1.1 m s/sup -1/ for 20 min on a treadmill. During walking, expired gas of subjects were collected and analyzed by a cardiopulmonary function system. Based on the results of expired gas analysis, human walking intensity during walking at different load conditions were calculated and presented by the percent of VO/sub 2/max. Heart rate of subjects were monitored and recorded by electrocardiograph until 5 min after walking. Blood pressure were measured before, immediately, 3 and 5 min after every trial. There was a significant difference found on the human working intensity between 10 and 20% body weight load conditions, but not among the 0%, 10% and 15% body weight load conditions. Heart rate responses among all load conditions showed similar trends. 60% maximum heart rate was obtained at different load conditions among the subjects. It is concluded that 10% body weight is recommended as the weight of school bags for children. |
| Starting Page | 2434 |
| Ending Page | 2437 |
| File Size | 454897 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780351649 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.1998.744924 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-11-01 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Humans Legged locomotion Educational institutions Heart rate Aging Protocols Testing Cardiology Heart rate measurement Blood pressure |
| Content Type | Text |
| Resource Type | Article |
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