The
necessary sample size of seven subjects was calculated from data
obtained from a pilot study of eight subjects to achieve a power
of 0.80 and an effect size of 0.52 (calculated from the partial g2
of 0.21 from the pilot study), with an a level of 0.05. Thus, fifteen
young men with RSP participated (age = 21.46 ± 2.30 years,
height = 174.85 ± 3.41 cm, weight = 66.00 ± 4.24 kg, and
BMI = 21.59 ± 1.27).