Department of Sport Sciences, Exercise and Health, Research Centre in Sports Sciences, Health and Human Development (CIDESD), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.
Maturitas. 2010 Oct;67(2):178-85. doi: 10.1016/j.maturitas.2010.06.012. Epub 2010 Jul 17.
The purpose of this study was to establish a reference dataset for temporal parameters on postmenopausal women during walking and to explore the effect of obesity and sarcopenic obesity on the same parameters.
Based on plantar pressure data collected from 239 postmenopausal women, the initial contact, final contact, time to peak pressure and the duration of contact at the 10 anatomical areas of the foot considered were measured. Body composition was evaluated by octopolar bioimpedance.
Non-obese and non-sarcopenic started with heel contact followed by a latero-medial contact of the metatarsals and finally the hallux (the sarcopenic obese group ended in the toes 2-5). After heel off, the forefoot started to push off at the lateral metatarsals, followed by a more central push off and finally over the hallux (the sarcopenic obese group presented a greater oscillation in the metatarsals). The stance phase was divided into four distinct phases: initial contact (22.30%), forefoot contact (19.98%), foot flat (13.40%) and forefoot push off (44.32%). Sarcopenic obese spent more time in the forefoot contact phase (relative and absolute) and less time in the initial contact phase (%).
These findings provide a reliable and representative reference dataset for temporal characteristics of foot roll-over during walking of postmenopausal women. Sarcopenic obesity affects significantly the temporal characteristics of foot roll-over during walking in this population. Such findings are of concern to clinicians interested in the promotion of activity to reduce obesity and gain or maintain muscle, since sarcopenic obesity affects normal walking, which might increase injuries.
本研究旨在建立绝经后女性行走时时间参数的参考数据集，并探讨肥胖和肌少症性肥胖对这些参数的影响。
本研究基于从 239 名绝经后女性收集的足底压力数据，测量了初始接触、最终接触、压力峰值时间以及足部 10 个解剖区域的接触时间。身体成分通过八极生物阻抗进行评估。
非肥胖和非肌少症性肥胖组的起始接触点为脚跟，随后是中足的外侧到内侧接触，最后是大脚趾（肌少症性肥胖组的结束点在第 2-5 脚趾）。脚跟离地后，前足开始在外侧跖骨处蹬离，随后蹬离更向中间进行，最后蹬离大脚趾（肌少症性肥胖组在跖骨处有更大的摆动）。站立相分为四个明显的阶段：初始接触（22.30%）、前足接触（19.98%）、足放平（13.40%）和前足蹬离（44.32%）。肌少症性肥胖组在前足接触阶段（相对和绝对）花费的时间更多，而在初始接触阶段花费的时间更少（%）。
这些发现为绝经后女性行走时足滚动的时间特征提供了可靠和有代表性的参考数据集。肌少症性肥胖显著影响了该人群行走时足滚动的时间特征。这些发现令关注通过促进活动来减少肥胖和增加或维持肌肉的临床医生感到担忧，因为肌少症性肥胖会影响正常行走，从而增加受伤的风险。
