Table 3.
Characteristics of the Included Studies and Outcomes Extracted
| Study | N | Mean Age (yo) | Sex | Type of Control Group | Outcomes | Tests Used in the Original Studies | Measure Extracted from the Tests in the Original Studies |
|---|---|---|---|---|---|---|---|
| Asadi et al40 | Pre-PHV =20, Exp:10, ActCon: 10 Mid-PHV = 20, Exp:10, ActCon:10 Post PHV = 20, Exp:10, ActCon: 10 |
Pre-PHV = Exp: 11.5 ± 0.8, ActCon:11.7 ± 0.4 Mid-PHV = Exp: 14.0 ± 0.7, ActCon:14.2 ± 0.6 Post PHV = Exp: 16.6 ± 0.6, ActCon:16.2 ± 0.3 |
M | ActCon: Soccer specific training (3 days per week soccer training) | 20-m sprint with and without dribbling the ball | 20-meter sprint test (Times were recorded to the nearest 0.01 s (JBL Systems, Oslo, Norway). | 20-m sprint time (s): The fastest sprint time obtained from the three trials were recorded. |
| Moran et al68 | Pre-PHV =21, Exp:9, ActCon: 12 Mid-PHV = 17, Exp:8, ActCon:9 |
Pre-PHV = Exp: 12.6 ± 0.7, ActCon: 12.8 ± 0.8 Mid-PHV = Exp: 14.3 ± 0.6, ActCon: 14.3 ± 0.6 |
M | ActCon: low intensity hockey skills training (2 days per week, one competitive game against other school opposition) |
10-m and 30-m sprint running times | Acceleration (10 m) and maximal speed (30 m). Running times were measured by TC System timing gates (Brower Timing Systems, Draper, Utah, United States). T | 10-m sprint (s) 30-m sprint (s) The best of three trials (one minute of rest between trials) were recorded. |
| Peña-González et al69 | Con: 20 Pre-PHV = 43 Mid-PHV = 36 Post PHV = 31 |
ActCon: 13.2±1.1 Pre-PHV = 12.8±0.4 Mid-PHV = 13.8±0.6 Post PHV = 13.8±0.6 |
M | ActCon: participated soccer specific trainings (three days a week, 90 min.) | 30-m sprint | 30-m sprint were used by photoelectric cells (Datalogic S6 Series, Bologna, Italy) | 30-m sprint (s): The best of two trials (two minute of rest between trials) were recorded. |
| Vera-Assaoka et al70 | Con-Early: 16 PJT-Early: 16 Con-Late: 22 PJT-Late: 22 |
Con-Early: 11.5±0.9 PJT-Early: 11.2±0.8 Con-Late: 14.5±1.1 PJT-Late: 14.4±1.0 |
M | Con-Early (Tanner stage 1–3) and Con-Late (Tanner stage 4–5): actively participated soccer specific trainings twice a week for 90 min. | 20-m sprint | 20-m sprint time were measured by single beam infrared reds photoelectric cells (Globus Italia, Codogne, Italy). | 20-m sprint (s): The best of three trials were recorded. |