Musculotendinous Stiffness of Triceps Surae, Maximal Rate of Force Development, and Vertical Jump Performance

Table 2

Stiffness indices (, , , and /BM, /), curvature indices (, ), and stiffness at 100 N⋅m (S100) in all the subjects ( = 27), in high (H), medium (M), and low (L) performers in vertical jump (CMJ). Means ± SD. , , and significance levels of the differences between groups L, H, and M (ANOVA; post hoc Bonferroni -test).

	All ( = 27)	H ( = 9)		M ( = 9)		L ( = 9)
(rad^−1)	3.12 ± 1.13	2.71 ± 0.96	NS	3.46 ± 1.07	NS	3.20 ± 1.32	NS
(rad^−1)	1.56 ± 1.30	0.69 ± 0.81	NS	1.33 ± 1.25	0.041	2.64 ± 1.03	0.001
	0.59 ± 0.73	0.30 ± 0.44	NS	0.37 ± 0.35	NS	1.11 ± 0.99	0.05
(N⋅m⋅rad^−1)	283 ± 128	361 ± 95	NS	318 ± 127	0.016	171 ± 75	0.002
(rad^−1)	3.10 ± 0.79	3.41 ± 0.63	NS	3.36 ± 0.93	NS	2.55 ± 0.46	0.047
/BM (N⋅m⋅rad^−1⋅kg^−1)	4.34 ± 1.09	5.07 ± 0.92	NS	4.01 ± 0.86	NS	3.94 ± 1.16	0.05
	0.40 ± 0.11	0.40 ± 0.08	NS	0.35 ± 0.06	0.028	0.46 ± 0.15	0.029
S100 (N⋅m⋅rad^−1)	417 ± 83	417 ± 81	NS	421 ± 108	NS	414 ± 65	NS

NS: not significant.