谭雅兮 刘耀天

摘 要：目的：評估座椅的表面材质对肌肉活动和能量消耗的影响，为久坐少动的干预设计提供实证依据。方法： 20名健康大学生分别在传统座椅、充气垫、瑞士球上完成10分钟的静坐任务，使用MAX-Ⅱ气体代谢分析仪收集受试者气体代谢指标，使用美国产NORAXON表面肌电仪分别记录上下肢的肌电信号。数据使用重复测量方差分析和多元逐步回归分析，以确定不同座位表面对能量消耗和肌肉活动的影响。结果：瑞士球与传统座椅（P=0.01）和充气垫（P=0.00）之间产生的能量消耗均具有显著性差异，传统座椅与充气垫之间无显著性差异（P=0.55）;6块肌肉之间的肌肉活动差异具有显著性（F=56.54，P=0.00），表面与肌电的交互效应也具有显著性差异（F=8.28，P=0.00）;逐步回归分析显示下肢肌肉中胫骨前肌与股直肌，下肢肌肉中腹外斜肌、股直肌、腹直肌和腹外斜肌在模型中均有显著性差异。结论：充气垫与传统座椅相比能量消耗无显著差异，瑞士球产生的能量活动均高于前二者。从肌电活动上看，充气垫和瑞士球均高于传统座椅。柔软的支撑表面能增加核心与下肢肌群的活动程度，长此以往有助于增加能量消耗。

关键词：瑞士球;充气垫;能量消耗;积分肌电

中图分类号：G804.7  文献标识码：A  文章编号：1009-9840（2021）02-0047-06

Analysis of energy consumption level and electromyography characteristics of flexible surface sitting

TAN Yaxi， LIU Yaotian

（School of Physical Education， Sichuan Normal University， Chengdu 610101， Sichuan， China）

Abstract：Objective： To evaluate the effect of the surface material of the seat on muscle activity and energy expenditure， and provide an empirical basis for the intervention design of sedentary and less active.Methods： 20 healthy college students completed a 10-minute sit-in task on a traditional seat， inflatable cushion， and Swiss ball. The MAX-II gas metabolism analyzer was used to collect the gas metabolism index of the subjects， and the NORXON surface electromyograph produced by the US was recorded separately. EMG signals of the upper and lower limbs. Data were analyzed using repeated measures analysis of variance and multiple stepwise regression analysis to determine the effects of different seating surfaces on energy expenditure and muscle activity.Results： The energy consumption between the Swiss ball and the traditional seat （P=0.01） and the inflatable cushion （P=0.00） was significantly different. There was no significant difference between the traditional seat and the inflatable cushion （P=0.55）. The difference in muscle activity between the 6 muscles was significant （F=56.54，P=0.00）， and the interaction between surface and myoelectricity was also significantly different （F=8.28，P=0.00）; stepwise regression analysis showed lower limbs In the muscle， the tibialis anterior and rectus femoris， the lower extremity muscles， the external oblique muscle， the rectus femoris， the rectus abdominis and the external oblique muscle were significantly different in the model. Conclusion： There is no significant difference in energy consumption between the inflatable cushion and the traditional seat. The energy activity of the Swiss ball is higher than the two. From the perspective of myoelectric activity， inflatable cushions and Swiss balls are higher than traditional seats. The soft， compliant support surface increases the activity of the core and lower limb muscles， which in the long run helps increase energy expenditure.

Key words： Swiss ball; inflatable cushion; energy consumption; integral myoelectric

收稿日期：2019-03-28

作者简介：谭雅兮（1995- ），女，四川攀枝花人，在读硕士，研究方向体力活动测量与评价。

久坐行为会导致许多健康问题和负面影响[1-2]。近年来大量流行病调查证实，体力活动不足与2型糖尿病、心血管疾病 ，肌肉含量减少，体重的增加与肥胖密切相关[3]，适当的体力活动有助于降低这些疾病的发生概率。……