Table 2.  Changes of peak velocity and flow volume of blood in the right superficial femoral vein with TS isometric contraction (n=20).

Relative muscular activity	Peak velocity (cm/s)		Percentage increase of peak velocity (%)		Flow volume (mL/min)		Percentage increase of flowvolume (%)
Rest	27.7 [21.3–34.1]		-		239.8 [171.2–308.3]		-
15–35%MVC	32.0 [25.0–39.0]	**	+18.6 [11.6–25.6]		292.6 [214.7–370.6]	*	+30.4 [9.4–51.4]
40–60%MVC	37.9 [30.1–45.6]	**††	+42.4 [31.0–53.8]	††	418.8 [326.7–510.8]	**††	+100.4 [61.0–139.7]	††
65–85%MVC	42.3 [33.7–50.9]	**††‡‡	+58.2 [45.5–71.0]	††‡‡	485.8 [366.0–605.5]	**††	+125.9 [81.5–170.3]	††
90–100%MVC	46.4 [37.4–55.4]	**††‡‡§§	+76.3 [61.6–90.9]	††‡‡§§	582.7 [459.6–705.7]	**††‡‡§§	+184.8 [122.9–246.8]	††‡‡§§

Values are means and 95% confidence intervals. * P <0.05 vs. rest; ** P <0.01 vs. rest; †† P <0.01 vs. 15–35%MVC; ‡‡ P <0.01 vs. 40–60%MVC; §§ P <0.01 vs. 65–85%MVC