抄録
This study aimed to examine the characteristics and sex differences in physique and physical fitness of
middle-aged and the elderly (range, 60-83 years). The physique and physical fitness of middle-aged and
the elderly were measured once a year for 13 years. In total, 48 males and 40 females, who completed
continuous measurements over 3 years, were compared and examined using panel data and time series
data analyses. In the panel data analysis, it was found that height, body weight, body fat percentage (%
FAT) , lean body mass (LBM), grip strength, one leg stand with eyes open (OLEO), 10-m hurdle walk time
(10mHW), and shuttle stamina walk test (SSTw) were significantly correlated with age in both sexes. In
the body mass index (BMI) of females and the sit-up of males were significantly correlated with age. In the
time series data analysis, LBM, grip strength, sit-up, OLEO, 10mHW, and SSTw were significantly
correlated with age in both sexes. Further, the % FAT and osteo sono-assessment index (OSI) in males, and
height, BMI, and sitting trunk flexion in females were significantly correlated with age. Significant
differences were observed in the % FAT, sit-up, OLEO, 10mHW, and SSTw of males, in BMI and LBM of
females in the slope of the regression line between panel data and time series data analyses. A significant
difference was observed in the slope of the regression line only in the grip strength between males and
females in the panel data analysis.
Based on the above results, the physique in both sexes is affected by various biases, also physical fitness
in men is affected. Further, in panel data analysis, sex differences were found only in the grip strength.
