Research Article
Bone Mineral Density of Adolescent Female Tennis Players and Nontennis Players
Table 4
Results of 7-Day Physical Activity (PA) Questionnaire and tennis playing history.
| | Tennis players () | Non tennis players () |
| | Physical activity (MET hours/week) | | | | Starting age for playing tennis (yr) | | — | | Frequency of playing tennis (days/wk) | | — | | Duration of each tennis session (min) | | — |
|
|
All values are means and standard deviations.
for MET hours/week due to one set of extreme scores.
|
