Table 3. Mean and standard deviation (± SD) of performance variables for the HIIT+SSG and Control groups, across three maturational levels (pre-PHV, mid-PHV, and post-PHV), at pre- and post-intervention time points.
| Maturational
status |
Outcome |
HIIT&SSG |
Control |
| Pre-intervention |
Post-intervention |
Post-intervention |
Post-intervention |
| Pre-PHV |
IMTP
(kg) |
15.9 ±
1.0 |
17.5 ±
1.0 |
15.9 ±
0.9 |
16.8 ±
0.9 |
| VIFT
(km/h) |
13.8
± 0.6 |
14.8
± 0.5 |
14.1
± 0.5 |
14.3
± 0.5 |
| 30-m
Sprint (s) |
5.18 ±
0.15 |
5.00 ±
0.14 |
5.19 ±
0.18 |
5.11 ±
0.18 |
| Mid-PHV |
IMTP
(kg) |
19.0
± 1.1 |
22.1
± 1.2 |
19.4
± 1.2 |
20.6
± 1.2 |
| VIFT
(km/h) |
15.4 ±
0.7 |
16.9 ±
0.6 |
15.3 ±
0.5 |
15.6 ±
0.3 |
| 30-m
Sprint (s) |
4.97
± 0.12 |
4.63
± 0.10 |
4.91
± 0.14 |
4.74
± 0.14 |
| Post-PHV |
IMTP
(kg) |
21.8 ±
1.3 |
25.8 ±
1.4 |
21.9 ±
1.8 |
23.7 ±
1.8 |
| VIFT
(km/h) |
16.0
± 0.6 |
17.5
± 0.6 |
15.8
± 0.6 |
16.0
± 0.5 |
| 30-m
Sprint (s) |
4.70 ±
0.17 |
4.35 ±
0.16 |
4.81 ±
0.12 |
4.63 ±
0.13 |
IMTP: isometric mid-thigh pull test; VIFT: final velocity at 30-15 Intermittent Fitness test; PHV: peak height velocity; HIIT&SSG: high-intensity interval training and small-sided games.
