title: Provisional norms by age group for Japanese females on the controlled force-exertion test using a bar-chart display.
abstract: This study examined age-group and individual differences on the controlled force-exertion test by bar-chart display and proposed a provisional norm in 249 females who were right-handed and ages 15 to 84 years. The subjects matched their submaximal grip strength to changing demand values, appearing as a bar chart on the display of a personal computer. The subjects performed the controlled force-exertion test three times with 1-min. intervals (single trials were 40 sec.), after one practice trial using the dominant hand. A total of the differences (%) between the demand value and the grip-exertion value for 25 sec. was used as an evaluation parameter. The measurements showed a right-skewed distribution, normalized after logarithmic transformation. Analysis of variance identified significant differences between means of each age group; test performance decreased after 40 years of age. Norms for each age group were presented.
authors: Akita Prefectural University, 241-438 Kaidobata-Nishi, Shimoshinjo-Nakano, Akita City, Akita 010-0195, Japan. nagasawa@akita-pu.ac.jp
authors: Yoshinori
authors: Y
authors: Nagasawa
authors: Shinichi
authors: S
authors: Demura
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D007564:Japan; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology; D009119:Muscle Contraction / Q000502:physiology; D053581:Muscle Strength Dynamometer / Q000706:statistics & numerical data*; D005082:Physical Exertion / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology; D011214:Practice, Psychological; D011597:Psychomotor Performance / Q000502:physiology*; D013177:Sports / Q000502:physiology