title: Isokinetic trunk flexors and extensors performance with and without gravity correction.
abstract: 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%).
authors.affiliation: CRF L'Espoir, Lille-Hellemmes, France.
authors.forename: J L
authors.initials: JL
authors.lastname: Vanhee
authors.forename: P h
authors.initials: Ph
authors.lastname: Voisin
authors.forename: T h
authors.initials: Th
authors.lastname: Vezirian
authors.forename: J
authors.initials: J
authors.lastname: Vanvelcenaher
mesh_terms: 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