Trunk extensor endurance: determination and relation to low-back trouble.
D000328:Adult; D001415:Back / Q000502:physiology; D001416:Back Pain / Q000209:etiology*; D006804:Ergonomics; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D010807:Physical Endurance