VODAK, PAUL A., WILLIAM M. SAVIN, WILLIAM L. HASKELL, and PETER D. WOOD. Physiological profile of middleaged male and female tennis players.Med. sci. Sports Exercise, Vol. 12, No. 3, pp. 159–163, 1980. Cardiorespiratory characteristics, relative body fat, grip strength and selected skinfolds, circumferences and bone diameters were determined in 25 males and 25 females 9 (31–55 yr) whose exclusive mode of regular exercise was tennis (9.7–11.1 hr/wk). Mean resting heart rates were 54 beats/min for the males and 61 beats/min for the females. Mean resting blood pressures were 117/75 and 107/68 mmHg for the males and females, respectively. Compared to normally active populations of the same age and sex, the tennis players displayed an above average maximal oxygen uptake (mean values equal 50.2 ml/kg·min-1for the females), below average relative body fat (mean values equal 16.3% and 20.3% for the males and females, respectively), greater dominant grip strengths, and similar non-dominant grip strengths. The results indicate that either physically superior individuals choose to play tennis, or that regular tennis participation produces above average levels of fitness, or both.