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.