The primary purpose of this study was to determine, in children and adolescents with mild spastic cerebra palsy (CP); 1) minute-by-minute differences in lower limb antagonist muscle co-activation and stride length (SL) during treadmill walking following 12-15 minutes of treadmill walking practice, and 2) if the minute-by-minute pattern of co-activation is affected by site (thigh or lower leg) and lower limb dominance. A secondary purpose was to determine if overall there is a difference in co-activation between the dominant and non-dominant lower limbs. Eight independently ambulatory children and adolescents with mild spastic CP (9.2-15.7 yr) participated in the study. Minute-by-minute lower limb antagonist muscle co-activation and SL were measured during a 3-minute treadmill walk at 90\% of individually determined fastest treadmill walking speed. Non-dominant thigh (quadriceps, hamstring muscles) co-activation decreased between minute 1 and a) minute 2 (6\%), b) minute 3 (7.2\%). Co-activation for the dominant lower leg (tibialis anterior, triceps surae muscles) decreased between minute 1 and minute 3 (11.3\%). Non-dominant thigh co-activation was on average 27.3\% higher than for the dominant thigh. Thigh co-activation was on average 27.7\% higher than for the lower leg, independent of dominance or time. SL increased between minute 1 and minute 3 by 2.1\%. Twelve to 15 minutes of treadmill walking practice may be sufficient time to obtain stable co-activation and SL values by minute 2 of a fast treadmill walk. Dominance and site affect the magnitude of co-activation.
%0 Journal Article
%1 Maltais2004
%A Maltais, D. B.
%A Pierrynowski, M. R.
%A Galea, V. A.
%A de Bruin, H.
%A Al-Mutawaly, N.
%A Bar-Or, O.
%D 2004
%J Electromyogr Clin Neurophysiol
%K Adolescent; Cerebral Palsy; Child; Electromyography; Exercise Test; Female; Functional Laterality; Gait; Humans; Leg; Male; Muscle, Skeletal; Practice (Psychology); Walking
%N 8
%P 477--487
%T Minute-by-minute differences in co-activation during treadmill walking in cerebral palsy.
%V 44
%X The primary purpose of this study was to determine, in children and adolescents with mild spastic cerebra palsy (CP); 1) minute-by-minute differences in lower limb antagonist muscle co-activation and stride length (SL) during treadmill walking following 12-15 minutes of treadmill walking practice, and 2) if the minute-by-minute pattern of co-activation is affected by site (thigh or lower leg) and lower limb dominance. A secondary purpose was to determine if overall there is a difference in co-activation between the dominant and non-dominant lower limbs. Eight independently ambulatory children and adolescents with mild spastic CP (9.2-15.7 yr) participated in the study. Minute-by-minute lower limb antagonist muscle co-activation and SL were measured during a 3-minute treadmill walk at 90\% of individually determined fastest treadmill walking speed. Non-dominant thigh (quadriceps, hamstring muscles) co-activation decreased between minute 1 and a) minute 2 (6\%), b) minute 3 (7.2\%). Co-activation for the dominant lower leg (tibialis anterior, triceps surae muscles) decreased between minute 1 and minute 3 (11.3\%). Non-dominant thigh co-activation was on average 27.3\% higher than for the dominant thigh. Thigh co-activation was on average 27.7\% higher than for the lower leg, independent of dominance or time. SL increased between minute 1 and minute 3 by 2.1\%. Twelve to 15 minutes of treadmill walking practice may be sufficient time to obtain stable co-activation and SL values by minute 2 of a fast treadmill walk. Dominance and site affect the magnitude of co-activation.
@article{Maltais2004,
abstract = {The primary purpose of this study was to determine, in children and adolescents with mild spastic cerebra palsy (CP); 1) minute-by-minute differences in lower limb antagonist muscle co-activation and stride length (SL) during treadmill walking following 12-15 minutes of treadmill walking practice, and 2) if the minute-by-minute pattern of co-activation is affected by site (thigh or lower leg) and lower limb dominance. A secondary purpose was to determine if overall there is a difference in co-activation between the dominant and non-dominant lower limbs. Eight independently ambulatory children and adolescents with mild spastic CP (9.2-15.7 yr) participated in the study. Minute-by-minute lower limb antagonist muscle co-activation and SL were measured during a 3-minute treadmill walk at 90\% of individually determined fastest treadmill walking speed. Non-dominant thigh (quadriceps, hamstring muscles) co-activation decreased between minute 1 and a) minute 2 (6\%), b) minute 3 (7.2\%). Co-activation for the dominant lower leg (tibialis anterior, triceps surae muscles) decreased between minute 1 and minute 3 (11.3\%). Non-dominant thigh co-activation was on average 27.3\% higher than for the dominant thigh. Thigh co-activation was on average 27.7\% higher than for the lower leg, independent of dominance or time. SL increased between minute 1 and minute 3 by 2.1\%. Twelve to 15 minutes of treadmill walking practice may be sufficient time to obtain stable co-activation and SL values by minute 2 of a fast treadmill walk. Dominance and site affect the magnitude of co-activation.},
added-at = {2014-07-19T20:45:19.000+0200},
author = {Maltais, D. B. and Pierrynowski, M. R. and Galea, V. A. and de Bruin, H. and Al-Mutawaly, N. and Bar-Or, O.},
biburl = {https://www.bibsonomy.org/bibtex/23ef65c45f65746ebe789aa8399fce674/ar0berts},
groups = {public},
interhash = {d6890abb6e52ad772c479cdca9647730},
intrahash = {3ef65c45f65746ebe789aa8399fce674},
journal = {Electromyogr Clin Neurophysiol},
keywords = {Adolescent; Cerebral Palsy; Child; Electromyography; Exercise Test; Female; Functional Laterality; Gait; Humans; Leg; Male; Muscle, Skeletal; Practice (Psychology); Walking},
month = Dec,
number = 8,
pages = {477--487},
pmid = {15646005},
timestamp = {2014-07-19T20:45:19.000+0200},
title = {Minute-by-minute differences in co-activation during treadmill walking in cerebral palsy.},
username = {ar0berts},
volume = 44,
year = 2004
}