TY - JOUR
T1 - Changes in EMG characteristics and metabolic energy cost during 90-min prolonged running
AU - Abe, Daijiro
AU - Muraki, Satoshi
AU - Yanagawa, Kazumasa
AU - Fukuoka, Yoshiyuki
AU - Niihata, Shigemitsu
N1 - Funding Information:
This study was supported by a Grant-in-Aid for Young Scientists (B) from the Japan Ministry of Education, Culture, Sports, Science and Technology (Grant no. 17770217 to D.A.) and in part by the Nakatomi Foundation (to D.A.).
PY - 2007/10
Y1 - 2007/10
N2 - This study quantified the interaction of integrated electromyography (iEMG) obtained from the vastus lateralis and the metabolic energy cost of running (Cr), an index to assess running economy, during 90-min prolonged running. The iEMG during running was divided into eccentric (ECC) and concentric (CON) phases using a force platform and a knee-joint goniometer. The ratio of ECC to CON (ECC/CON ratio) significantly decreased during 90-min prolonged running in novice distance runners, which would be explained by an increase in muscle activity during the CON phase of running. The average Cr value significantly increased during 90-min prolonged running. The individual's Cr values significantly correlated with the ECC/CON ratio (r = -0.702, P < 0.05). These results suggest that changes in the ECC/CON ratio and Cr value during prolonged running are associated.
AB - This study quantified the interaction of integrated electromyography (iEMG) obtained from the vastus lateralis and the metabolic energy cost of running (Cr), an index to assess running economy, during 90-min prolonged running. The iEMG during running was divided into eccentric (ECC) and concentric (CON) phases using a force platform and a knee-joint goniometer. The ratio of ECC to CON (ECC/CON ratio) significantly decreased during 90-min prolonged running in novice distance runners, which would be explained by an increase in muscle activity during the CON phase of running. The average Cr value significantly increased during 90-min prolonged running. The individual's Cr values significantly correlated with the ECC/CON ratio (r = -0.702, P < 0.05). These results suggest that changes in the ECC/CON ratio and Cr value during prolonged running are associated.
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U2 - 10.1016/j.gaitpost.2006.12.014
DO - 10.1016/j.gaitpost.2006.12.014
M3 - Article
C2 - 17276067
AN - SCOPUS:34548675550
SN - 0966-6362
VL - 26
SP - 607
EP - 610
JO - Gait and Posture
JF - Gait and Posture
IS - 4
ER -