Comparison of the metabolic energy cost of overground and treadmill walking in older adults
Comparison of the metabolic energy cost of overground and treadmill walking in older adults
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DOI：
10.1007/s00421-011-2102-1
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发表时间：
2012-05-01
影响因子：
3
通讯作者：
Bosquet, Laurent
中科院分区：
文献类型：
--
作者：
Berryman, Nicolas;Gayda, Mathieu;Bosquet, Laurent
我们评估了健康老年人在地面或跑步机上测量时步行的代谢能量消耗是否更高。我们还评估了两种测试模式之间的关联。参与者（n = 20，14名男性和6名女性，年龄在65至83岁之间）被随机分为两组。其中一半人经历了地面跑步机序列，而另一半则相反。在实际测试之前，对每名参与者进行熟悉访问。对于这两种测试模式，实验了五种步行速度（0.67，0.89，1.11，1.33和1.67 m s（-1））。监测所有步行速度的摄氧量。我们发现，无论步行速度如何，跑步机和轨道步行的代谢能量消耗之间存在显着差异。结果表明，在各种实验速度下，跑台步行比地面步行需要更多的代谢能（P < 0.05）。两种测量之间的相关性为低至中度（0.17 < ICC < 0.65），测量的标准误差为平均值的6.9-15.7%。这些数据表明，从跑步机测试结果步行代谢能量成本不一定适用于日常地上活动。旨在减少步行代谢能量消耗的干预措施应采用与干预期间提出的相同模式进行评估。如果出于任何目的需要跑步机模式，则应进行功能性地上行走测试，以获得更完整和具体的评估。
We assessed whether the metabolic energy cost of walking was higher when measured overground or on a treadmill in a population of healthy older adults. We also assessed the association between the two testing modes. Participants (n = 20, 14 men and 6 women aged between 65 and 83 years of age) were randomly divided into two groups. Half of them went through the overground-treadmill sequence while the other half did the opposite order. A familiarization visit was held for each participant prior to the actual testing. For both modes of testing, five walking speeds were experimented (0.67, 0.89, 1.11, 1.33 and 1.67 m s(-1)). Oxygen uptake was monitored for all walking speeds. We found a significant difference between treadmill and track metabolic energy cost of walking, whatever the walking speed. The results show that walking on the treadmill requires more metabolic energy than walking overground for all experimental speeds (P < 0.05). The association between both measures was low to moderate (0.17 < ICC < 0.65), and the standard error of measurement represented 6.9-15.7% of the average value. These data indicate that metabolic energy cost of walking results from a treadmill test does not necessarily apply in daily overground activities. Interventions aiming at reducing the metabolic energy cost of walking should be assessed with the same mode as it was proposed during the intervention. If the treadmill mode is necessary for any purposes, functional overground walking tests should be implemented to obtain a more complete and specific evaluation.