The energetics of walking on sand and grass at various speeds
The energetics of walking on sand and grass at various speeds
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DOI：
10.1080/00140130600558023
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发表时间：
2006-06-10
期刊：
影响因子：
2.4
通讯作者：
MacKinnon, SN
中科院分区：
文献类型：
--
作者：
Davies, SEH;MacKinnon, SN
本研究探讨了沙地和草地上行走的能量学。14名成年男性参与了这项研究。参与者的平均年龄为34.6岁，体重为72.6 kg，身高为172.5 cm，在沙地和草地上以每小时3、4、5、6和7 km的速度行走。生理指标包括心率、O-2摄取量、CO2呼出量、通气量和使用MetaMax Ergospirometer的相对O-2摄取量。以类似于“多级20米往返跑测试”的方法控制速度。在每个确定的速度下，在生理稳定速率期间收集数据。在随机化条件之间强制休息至少2小时。结果表明，有一个显着的增加（p < 0.01），在所有测量的生理指标指示能量消耗时，走在沙子上相比，草在3 - 7公里每小时，与最大的差距之间的表面（比= 1.63），在相对O-2消耗在5公里每小时。
This study investigated the energetics of walking on sand and grass. Fourteen adult males, participated in the study. Participants had a mean age of 34.6 years old, 72.6 kg in mass and 172.5 cm in stature, who walked at 3, 4, 5, 6 and 7 km per h on sand and grass surfaces. Physiological measures included heart rate, O-2 uptake, CO2 exhalation, ventilation and relative O2 uptake using a MetaMax Ergospirometer. Speed was controlled in a methodology similar to the 'Multistage 20-m Shuttle Run Test'. Data were collected during physiological steady rate at each determined speed. A minimum of 2 h rest was enforced between randomized conditions. Results indicate that there was a significant increase (p < 0.01) in all measured physiological indices indicative of energy expenditure when walking on sand compared to grass at 3 - 7 km per h, with the greatest disparity between the surfaces (ratio = 1.63) in relative O-2 consumption at 5 km per h.