[Diseases among vibration machine operators. (3) Muscle strength of the index finger].
D000293:Adolescent; D000328:Adult; D005385:Fingers / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000502:physiology*; D009784:Occupational Diseases / Q000209:etiology; D009790:Occupations; D014732:Vibration