Isokinetic trunk flexors and extensors performance with and without gravity correction.
We study the influence of the calculation of the trunk gravity correction, in standing position, on the isokinetic trunk flexors and extensors performance of a healthy population. Thirty men and 30 women are subjected to two tests, one with gravity correction, the other without, at angular speeds of 30 degrees/s and 120 degrees/s. In all cases the results with gravity correction show: a significant decrease of Peak Torque (PT) and Power (P) recorded on the trunk flexors and a significant increase of Peak Torque and Power recorded on the trunk extensors. Thus, the flexors/extensors ratios (50%) of both parameters are quite different from the ratios usually referred to in the literature (70%).
Vanhee
J L
JL
CRF L'Espoir, Lille-Hellemmes, France.
Voisin
P h
Ph
Vezirian
T h
Th
Vanvelcenaher
J
J
D000328:Adult; D001415:Back / Q000502:physiology*; D001835:Body Weight; D016552:Ergometry; D005080:Exercise Test; D005260:Female; D006112:Gravitation; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology*; D009126:Muscle Relaxation / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*; D011187:Posture / Q000502:physiology; D019415:Torque