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Electromechanical response times in the knee muscles in young and old women
Author(s) -
Szpala Agnieszka,
RutkowskaKucharska Alicja
Publication year - 2017
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25647
Subject(s) - medicine , physical medicine and rehabilitation , physical therapy , electromyography , age groups , stimulus (psychology) , audiology , psychology , demography , sociology , psychotherapist
The aim of the study was to compare electromechanical response times [total reaction time (TRT), pre‐motor time (PMT), and electromechanical delay] in the knee muscles in groups of young and older women during release of peak torque (PT). Methods Fifty women (1 group approximately 20 years of age and the other approximately 60 years of age) participated in the study. PT and electromyographic activity were measured for flexors and extensors of the right and left knee in static conditions in response to a visual stimulus. Results Significantly longer TRTs ( P = 0.05) and PMTs ( P = 0.05) were found in the group of older women compared with the younger participants. Asymmetry was found between the older and the younger group of women in PT of knee flexors. Discussion Significantly longer TRT and PMT phases in the group of older women suggests a longer time for information processing in the central nervous system in older people. Muscle Nerve 56 : E147–E153, 2017