title: Normative values for maximum power during motor function assessment of jumping among physically active Japanese.
abstract: OBJECTIVE
  To determine the relationship between maximum power relative to body weight (Pmax-rel) and the aging process, and to indicate the target values of improvement of motor function in Japanese individuals.
  
  
  METHODS
  In 410 physically active Japanese subjects (7-79 years) with no impairment of daily activities were performed counter-movement jumps. We evaluated the correlation between age and Pmax-rel, mean Pmax-rel by age group, and the percentage Esslinger Fitness Index score relative to 100% for same-age Europeans (%EFI), by gender.
  
  
  RESULTS
  Age and Pmax-rel were correlated in both males aged <18 and >or=18 years old (both p<0.01) and females aged <18 and >or=18 years old (both p<0.01). Pmax-rel declined gradually with age, reaching 53.5% of the peak in subjects in their 70s. There was no significant difference in %EFI scores in most age groups.
  
  
  CONCLUSIONS
  Similar to Europeans, Pmax-rel in Japanese individuals is closely correlated with age, declining to 53% of the peak in subjects in their 70s. Thus, Pmax-rel and the %EFI appear to be suitable as normative indices applicable to different human populations for the assessment of physical function.
authors: Department of Physical Therapy, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata, Japan. tsubaki@nuhw.ac.jp
authors: A
authors: A
authors: Tsubaki
authors: M
authors: M
authors: Kubo
authors: R
authors: R
authors: Kobayashi
authors: H
authors: H
authors: Jigami
authors: H E
authors: HE
authors: Takahashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging / Q000502:physiology; D044466:Asian People; D002648:Child; D003430:Cross-Sectional Studies; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology*; D018579:Patient Selection; D005082:Physical Exertion / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology*; D012016:Reference Values