Table 2 Summary of performance variables (ball release speed), body height and weight. Data are means (±SD).
Elite players
(n=12)		 Low level
players (n=14)		 Effect size
(η2)		 Power
(1-β)
Peformance *** .64 .99
Ball release speed (m·s-1) 22.3 (1.5) 18.0 (1.9)*** .62 1.00
Body height (m) 1.85 (.08) 1.78 (.07)* .18 .60
Body weight (kg) 83 (12) 72 (9)* .24 .74
* < 0.05*** < 0.001.