Pratihast Manisha, Al-Ani Ahmed, Chai Rifai, Su Steven, Naik Ganesh
Centre for Health Technologies, Faculty of Engineering & IT, University of Technology Sydney, 15, Broadway Ultimo Sydney, New South Wales 2007, Australia.
Department of Telecommunications, Electrical, Robotics and Biomedical Engineering, Faculty of Science, Engineering & Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Vic 3122, Australia.
Healthc Technol Lett. 2018 Nov 14;5(6):236-238. doi: 10.1049/htl.2018.5032. eCollection 2018 Dec.
The goal of this research was to investigate the effect of wearing high-heeled shoes (HHS) on lower limb muscle synchronisation during walking, using beta band (15-30 Hz) coherence analysis. Fifteen females with no previous neuromuscular disorders volunteered in this study. Surface electromyography in frequency domain was studied from rectus femoris (RF), vastus lateralis (VL), vastus medialis (VM) and semitendinosus (ST) muscles during walking by subjects wearing HHS of three different heel heights (low - 4 cm, medium - 6 cm and high - 10 cm). Average coherence values were calculated for RF-VL, RF-VM and RF-ST muscles in beta band to analyse muscle pair synchronisation. In this study, significant increase in beta band coherence was found in all three muscle pairs during walking on HHS of different heel heights (<0.05). Increased beta band coherence obtained from this study suggested that walking on HHS demands higher muscle pair synchronisation, to maintain stability around the knee joint.
本研究的目的是利用β波段（15 - 30赫兹）相干分析，调查穿高跟鞋（HHS）对行走过程中下肢肌肉同步性的影响。15名既往无神经肌肉疾病的女性自愿参与本研究。受试者穿着三种不同鞋跟高度（低 - 4厘米、中 - 6厘米和高 - 10厘米）的高跟鞋行走时，对股直肌（RF）、股外侧肌（VL）、股内侧肌（VM）和半腱肌（ST）进行频域表面肌电图研究。计算β波段中RF - VL、RF - VM和RF - ST肌肉的平均相干值，以分析肌肉对同步性。在本研究中，发现穿着不同鞋跟高度的高跟鞋行走时，所有三对肌肉的β波段相干性均显著增加（<0.05）。本研究获得的β波段相干性增加表明，穿高跟鞋行走需要更高的肌肉对同步性，以维持膝关节周围的稳定性。
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