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Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play.
J Electromyogr Kinesiol. 2006 Jun; 16(3):257-63.JE

Abstract

Surface electromyography has been useful in comparing muscular activity among different sports movements and it is a valuable technique for evaluating muscle activation, co-ordination and fatigue. Since these important variables have not been investigated during the full game in soccer, the present study aimed to investigate the activity of major muscles of the lower extremity during a soccer-simulation fatiguing protocol. Ten amateur soccer players (age 21.40+/-3.13 years; height 1.77+/-0.06 m; mass 74.55+/-8.5 kg) were tested. The exercise protocol, performed on a programmable motorised treadmill, consisted of the different intensities observed during soccer match-play (walking, jogging, running, sprinting). Electromyographic activity was recorded from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA) and gastrocnemius (GC) muscles before exercise, at half-time and immediately after the 90-min exercise protocol. The EMG data were analysed using custom-written software to compute the root mean square (RMS) value over ten gait cycles. With regard to RF, BF and TA, a significant main effect (P< 0.05) was found for condition (pre-game, half-time and post-game), speed (6, 12, 15 and 21 km h(-1)) (P<0.05) and interaction between condition and speed (P< 0.05). For GC, a significant effect was not found for condition or interaction between condition and speed, but a significant main effect (P< 0.001) was found for speed, with the RMS value increasing continually with increasing speed from 6 to 2 1km h(-1). The results indicated that after a simulation of the exercise intensity of soccer-play the EMG activity in major lower-limb muscles was less than before. This decrease indicated that prolonged intermittent exercise had an effect on muscle activity even when work-rate was sustained.

Authors+Show Affiliations

Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, 15-21 Webster Street, Liverpool L3 2ET, UK. n.rahnama@livjm.ac.ukNo affiliation info availableNo affiliation info available

Pub Type(s)

Controlled Clinical Trial
Journal Article

Language

eng

PubMed ID

16146698

Citation

Rahnama, Nader, et al. "Electromyography of Selected Lower-limb Muscles Fatigued By Exercise at the Intensity of Soccer Match-play." Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology, vol. 16, no. 3, 2006, pp. 257-63.
Rahnama N, Lees A, Reilly T. Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play. J Electromyogr Kinesiol. 2006;16(3):257-63.
Rahnama, N., Lees, A., & Reilly, T. (2006). Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play. Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology, 16(3), 257-63.
Rahnama N, Lees A, Reilly T. Electromyography of Selected Lower-limb Muscles Fatigued By Exercise at the Intensity of Soccer Match-play. J Electromyogr Kinesiol. 2006;16(3):257-63. PubMed PMID: 16146698.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play. AU - Rahnama,Nader, AU - Lees,Adrian, AU - Reilly,Thomas, Y1 - 2005/09/16/ PY - 2005/02/17/received PY - 2005/05/15/revised PY - 2005/07/01/accepted PY - 2005/9/9/pubmed PY - 2006/10/26/medline PY - 2005/9/9/entrez SP - 257 EP - 63 JF - Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology JO - J Electromyogr Kinesiol VL - 16 IS - 3 N2 - Surface electromyography has been useful in comparing muscular activity among different sports movements and it is a valuable technique for evaluating muscle activation, co-ordination and fatigue. Since these important variables have not been investigated during the full game in soccer, the present study aimed to investigate the activity of major muscles of the lower extremity during a soccer-simulation fatiguing protocol. Ten amateur soccer players (age 21.40+/-3.13 years; height 1.77+/-0.06 m; mass 74.55+/-8.5 kg) were tested. The exercise protocol, performed on a programmable motorised treadmill, consisted of the different intensities observed during soccer match-play (walking, jogging, running, sprinting). Electromyographic activity was recorded from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA) and gastrocnemius (GC) muscles before exercise, at half-time and immediately after the 90-min exercise protocol. The EMG data were analysed using custom-written software to compute the root mean square (RMS) value over ten gait cycles. With regard to RF, BF and TA, a significant main effect (P< 0.05) was found for condition (pre-game, half-time and post-game), speed (6, 12, 15 and 21 km h(-1)) (P<0.05) and interaction between condition and speed (P< 0.05). For GC, a significant effect was not found for condition or interaction between condition and speed, but a significant main effect (P< 0.001) was found for speed, with the RMS value increasing continually with increasing speed from 6 to 2 1km h(-1). The results indicated that after a simulation of the exercise intensity of soccer-play the EMG activity in major lower-limb muscles was less than before. This decrease indicated that prolonged intermittent exercise had an effect on muscle activity even when work-rate was sustained. SN - 1050-6411 UR - https://wwww.unboundmedicine.com/medline/citation/16146698/Electromyography_of_selected_lower_limb_muscles_fatigued_by_exercise_at_the_intensity_of_soccer_match_play_ DB - PRIME DP - Unbound Medicine ER -