Effects of voluntary activation level on force exerted by human adductor pollicis muscle during rapid stretches

TY - JOUR

T1 - Effects of voluntary activation level on force exerted by human adductor pollicis muscle during rapid stretches

AU - Onambele, G N L

AU - Bruce, S A

AU - Woledge, R C

PY - 2004/7

Y1 - 2004/7

N2 - We have observed the force resulting from sudden stretches (3-10 mm in 10-20 ms) of human adductor pollicis muscle during voluntary contractions maintaining different,:proportions of the maximum voluntary force from 20%; to 100%. The ratio,of the peak force during stretch (S) to the voluntary force (1) just before the start of the stretch was calculated. The S/I ratio was dependent both. on the level of activation and the speed of the stretch. At all levels of activation S/I increased exponentially With velocity towards a plateau value with an exponential constant of about 150 mm/s. The plateau values reached were dependent on activation level (P

AB - We have observed the force resulting from sudden stretches (3-10 mm in 10-20 ms) of human adductor pollicis muscle during voluntary contractions maintaining different,:proportions of the maximum voluntary force from 20%; to 100%. The ratio,of the peak force during stretch (S) to the voluntary force (1) just before the start of the stretch was calculated. The S/I ratio was dependent both. on the level of activation and the speed of the stretch. At all levels of activation S/I increased exponentially With velocity towards a plateau value with an exponential constant of about 150 mm/s. The plateau values reached were dependent on activation level (P

UR - http://www.scopus.com/inward/record.url?scp=3442902889&partnerID=8YFLogxK

U2 - 10.1007/s00424-004-1265-6

DO - 10.1007/s00424-004-1265-6

M3 - Article

SN - 1432-2013

VL - 448

SP - 457

EP - 461

JO - Pfl�s Archiv / European Journal of Physiology

JF - Pfl�s Archiv / European Journal of Physiology

IS - 4

ER -