Fig. 1

Description of subjects’ somatotypes. The three-component rating of endomorphy (ENDO), mesomorphy (MESO), and ectomorphy (ECTO) for each subject was calculated using the Heath–Carter somatotyping method (1993). Based on the rating of each component, an individual somatotype was determined and is described on the chart. The subjects in the single-day experiment showed a higher ECTO component than those in the multiple-day experiment, whereas the subjects in the 2015 experiment showed a higher MESO component than those in the single-day experiment