TABLE 2.
Strength and power variables and correlation coefficients (r) between maximal stroke velocity and competitive level (n = 21).
| Variable | Mean performance | Maximal StV§ |
Competitive level‡ |
||
| SV (r) | FV (r) | BV (r) | ITN (r) | ||
| SV (Km⋅h–1) | 179.5 ± 12 | 1 | 0.49† | 0.31 | −0.43† |
| FV (Km⋅h–1) | 154.3 ± 11.6 | 0.49† | 1 | 0.15 | 0.01 |
| BV (Km h–1) | 136.5 ± 7.8 | 0.31 | 0.15 | 1 | –0.35 |
| IsoIR (N) | 176.8 ± 36.5 | 0.005 | 0.003 | 0.36 | 0.27 |
| IsoAbd (N) | 139.7 ± 33.4 | 0.15 | –0.23 | –0.10 | 0.19 |
| IsoAdd (N) | 209.8 ± 47.8 | 0.31 | –0.06 | 0.16 | –0.16 |
| IsoWrF (N) | 259.9 ± 68.2 | –0.06 | 0.07 | –0.18 | 0.58† |
| IsoWrE (N) | 161.3 ± 53.1 | –0.02 | 0.06 | –0.19 | 0.28 |
| WmaxBP (W) | 503.6 ± 92.6 | 0.11 | 0.11 | 0.04 | –0.08 |
| 1 kg MBT (m) | 12.9 ± 1.5 | 0.24 | 0.001 | 0.16 | –0.02 |
| 2 kg MBT (m) | 9.4 ± 1.4 | 0.12 | –0.05 | 0.04 | 0.01 |
| 3 kg MBT (m) | 7.8 ± 1.2 | 0.21 | 0.002 | 0.01 | 0.03 |
| SJ (cm) | 27.4 ± 5.1 | 0.15 | –0.05 | 0.30 | –0.07 |
| CMJ (cm) | 30.1 ± 6.3 | 0.04 | –0.003 | 0.28 | 0.35 |
Values are mean ± SD. § Pearson product moment correlations. ‡Spearman correlation coefficients. StV, stroke velocity; SV, serve velocity; FV, forehand velocity; BV, backhand velocity; ITN, international tennis number; IsoIR, maximum isometric internal rotation strength; IsoAdd, maximum isometric adduction strength; IsoAbd, maximum isometric abduction strength; IsoWrF, maximum isometric wrist flexion strength; IsoWrE, maximum isometric wrist extension strength; WmaxBP, peak power bench press; MBT, medicine ball throw; SJ, squat jump; CMJ, countermovement jump. †p < 0.05.