TY - GEN
T1 - Application of Wavelet Transform to identify motor unit recruitment pattern
AU - Paobthong, Ninlawan
AU - Boonsinsukh, Rumpa
AU - Saengsirisuwan, Vitoon
AU - Sirisup, Sirod
PY - 2010
Y1 - 2010
N2 - Motor unit recruitment pattern represents the time-frequency characteristics of muscle contraction. The Continuous Wavelet Transform (CWT) is a time-frequency signal analysis but its ability to identify motor unit recruitment pattern is still unclear. The purpose of this study was to validate the CWT in identifying the differences in motor unit recruitment pattern, regarding time-space domains, between young and elderly healthy subjects during maximum voluntary knee extension. Ten elderly and 10 young subjects participated in this study. They were asked to perform isometric knee extension at 100% maximum voluntary contraction for 10 seconds. CWT analysis was presented as scalogram. Results showed that the presence of red color spectrum in the young subjects was less than that in the elderly group, indicating that the major recruitments occur more frequently in the elderly. When considering the neuronal firing frequency, the elderly subject operates the firing frequency at a lower range than the young group. The findings in this study confirmed that the CWT can be used to identify the age-related changes in motor unit recruitment pattern.
AB - Motor unit recruitment pattern represents the time-frequency characteristics of muscle contraction. The Continuous Wavelet Transform (CWT) is a time-frequency signal analysis but its ability to identify motor unit recruitment pattern is still unclear. The purpose of this study was to validate the CWT in identifying the differences in motor unit recruitment pattern, regarding time-space domains, between young and elderly healthy subjects during maximum voluntary knee extension. Ten elderly and 10 young subjects participated in this study. They were asked to perform isometric knee extension at 100% maximum voluntary contraction for 10 seconds. CWT analysis was presented as scalogram. Results showed that the presence of red color spectrum in the young subjects was less than that in the elderly group, indicating that the major recruitments occur more frequently in the elderly. When considering the neuronal firing frequency, the elderly subject operates the firing frequency at a lower range than the young group. The findings in this study confirmed that the CWT can be used to identify the age-related changes in motor unit recruitment pattern.
KW - aging
KW - motor unit recruitment pattern
KW - wavelet
UR - https://www.scopus.com/pages/publications/79955387606
U2 - 10.1109/IECBES.2010.5742236
DO - 10.1109/IECBES.2010.5742236
M3 - Conference contribution
AN - SCOPUS:79955387606
SN - 9781424476008
T3 - Proceedings of 2010 IEEE EMBS Conference on Biomedical Engineering and Sciences, IECBES 2010
SP - 242
EP - 245
BT - Proceedings of 2010 IEEE EMBS Conference on Biomedical Engineering and Sciences, IECBES 2010
T2 - 2010 IEEE EMBS Conference on Biomedical Engineering and Sciences, IECBES 2010
Y2 - 30 November 2010 through 2 December 2010
ER -