Table 2 Pre- and post-test mean values, standard deviations, and relative differences in the left-right-hop (LRH), countermovement jump test (CMJT), hurdle drop jump test (HDJT), static balance stork test (ST), dynamic balance test (DBT), agility hexagonal obstacle test (HOT), and an isometric leg extension strength test (ILES) for the training groups exercising on stable (STAB) and unstable (INST) surfaces
From: Metastability in plyometric training on unstable surfaces: a pilot study
|  |  | ICC | STAB (n = 13) | INST (n = 20) |
|---|---|---|---|---|
Age (y) |  |  | 24.1 ± 4.6 | 24.1 ± 3.4 |
Height (cm) |  |  | 179 ± 5.3 | 182 ± 5.2 |
Mass (kg) |  |  | 75.8 ± 8.3 | 76.0 ± 8.9 |
LRH (s) | Pre | 0.99 | 3.8 ± 0.5 | 3.8 ± 0.4 |
Left-Right-Hop | Post |  | 3.8 ± 0.5 | 3.8 ± 0.5 |
|  | % diff |  | −0.1% | + 0.3% |
CMJT (cm) | Pre | 0.99 | 39.9 ± 4.3 | 35.3 ± 4.8 |
Countermovement jump test | Post |  | 42.0 ± 6.0 | 40.1 ± 4.8 |
F m = 28.1** (η 2 = 0.47) F x = 4.4* (η 2 = 0.12) | % diff |  | +5.1% | +14.5%**°° |
HDJT (cm) | Pre | 0.99 | 49.2 ± 6.7 | 44.2 ± 5.7 |
Hurdle drop jump test | Post |  | 51.3 ± 6.8 | 48.4 ± 6.3 |
F m = 17.7** (η 2 = 0.36) | % diff |  | +4.6% | +9.8%*°° |
ST (s) | Pre | 0.82 | 17.3 ± 12.8 | 10.5 ± 8.0 |
Static balance stork-test | Post |  | 15.2 ± 10.6 | 11.8 ± 6.6 |
|  | % diff |  | −1.0% | +39.7% |
DBT (s) | Pre | 0.98 | 3.9 ± 0.8 | 3.8 ± 0.7 |
Dynamic balance test | Post |  | 3.2 ± 0.5 | 3.1 ± 0.5 |
F m = 61.5** (η 2 = 0.67) | % diff |  | +15.9%*°° | +18.4%**°° |
HOT (s) | Pre | 0.98 | 11.4 ± 1.2 | 10.9 ± 1.2 |
Agility hexagonal obstacle test | Post |  | 10.3 ± 1.2 | 9.9 ± 1.0 |
F m = 57.1** (η 2 = 0.65) | % diff |  | +9.7%*°° | +8.3%**°° |
ILES (kg) | Pre | 0.98 | 162.9 ± 30 | 174.5 ± 36 |
Isometric leg extension strength | p ost |  | 186.2 ± 42 | 194.9 ± 44 |
F m = 12.3** (η 2 = 0.29) | % diff |  | +14.7%° | +13.4%° |