Table 1. Characteristics of the study sample. Data are presented as mean (SD).
WBV protocol 20 Hz, 90 s
(n = 19)		 25 Hz, 90 s
(n = 19)		 30 Hz, 90 s
(n = 26)		 20 Hz, 120 s
(n = 28)		 25 Hz, 120 s
(n = 22)
Age
(years)		 males 19.3 (.5) 20.6 (.7) 21.5 (.3) 19.3 (.5) 19.0 (.0)
females 19.2 (.5) 19.4 (.8) 20.0 (.4) 19.4 (.9) 19.1 (.3)
Weight
(kg)		 males 76.9 (12.5) 77.0 (11.7) 78.0 (8.7) 80.2 (11.0) 73.6 (14.2)
females 60.7 (6.1) 60.2 (9.2) 59.0 (5.1) 58.0 (9.0) 56.7 (7.8)
Height
(m)		 males 1.76 (.06) 1.72 (.08) 1.78 (.07) 1.79 (.06) 1.75 (.07)
females 1.64 (.05) 1.63 (.05) 1.62 (.05) 1.64 (.07) 1.62 (.05)
WBV: whole-body vibration