Table 3. Changes in anthropometric and performance variables in response to 8 weeks training intervention (mean ± SD).
| Variable | Group | Testing time | Statistics | ||
|---|---|---|---|---|---|
| Pre | Mid | Post | |||
| Chest circumference (cm) | RT2 | 86.4 ± 4 | 88.7 ± 4.3* | 89.8 ± 4.5*,‡ | G = 0.08 |
| RT4 | 86.5 ± 7.3 | 91.3 ± 8.6*,‡ | 92.5 ± 8.1*,‡ | T = 0.001 | |
| CG | 86.3 ± 6.8 | 87.1 ± 7.5 | 86.8 ± 7.2 | G × T = 0.018 | |
| Thigh circumference (cm) | RT2 | 53.6 ± 3.3 | 56.0 ± 3.7*,‡ | 56.1 ± 3.4*,‡ | G = 0.54 |
| RT4 | 54.7 ± 7.6 | 56.2 ± 6.0*,‡ | 56.3 ± 6.3*,‡ | T = 0.001 | |
| CG | 53.5 ± 4.4 | 52.1 ± 3.4 | 51.8 ± 4.2 | G × T = 0.026 | |
| Arm circumference (cm) | RT2 | 27.2 ± 2.5 | 28.2 ± 2.9 | 28.8 ± 2.5 | G = 0.1 |
| RT4 | 29.3 ± 3.4 | 29.8 ± 3.4 | 29.5 ± 3.1 | T = 0.6 | |
| CG | 27.6 ± 2.1 | 27.0 ± 1.2 | 26.6 ± 1.2 | G × T = 0.12 | |
| 1RM bench press (kg) | RT2 | 63.5 ± 6.4 | 70.3 ± 7.3*,‡ | 71.5 ± 10.5*,‡ | G = 0.12 |
| RT4 | 64.6 ± 5.3 | 69.8 ± 10.6*,‡ | 75.5 ± 12.8*,†,‡,** | T = 0.001 | |
| CG | 64.4 ± 7.5 | 63.5 ± 7.5 | 64.8 ± 6.2 | G × T = 0.031 | |
| 1RM leg press (kg) | RT2 | 201.2 ± 36.6 | 260.6 ± 48.0*,‡ | 310.3 ± 52.5*,†,‡ | G = 0.48 |
| RT4 | 203.4 ± 51.7 | 263.9 ± 68.5*,‡ | 299.8 ± 64.2*,†,‡ | T = 0.01 | |
| CG | 202.8 ± 45.2 | 204.1 ± 39.8 | 203.4 ± 41.2 | G × T = 0.47 | |
| 1RM arm curl (kg) | RT2 | 28.7 ± 4.0 | 33.6 ± 4.0*,‡ | 34.3 ± 8.2*,‡ | G = 0.1 |
| RT4 | 28.6 ± 5.3 | 35.8 ± 6.2*,‡ | 37.2 ± 8.7*,‡,** | T = 0.001 | |
| CG | 29.1 ± 3.1 | 29.1 ± 2.5 | 29.9 ± 3.1 | G × T = 0.022 | |
| Bench press endurance (repetitions) | RT2 | 21.1 ± 3.6 | 21.5 ± 3.6 | 21.5 ± 3.8 | G = 0.11 |
| RT4 | 21.5 ± 2.6 | 23.0 ± 3.1*,‡ | 23.5 ± 2.3*,‡ | T = 0.01 | |
| CG | 19.4 ± 4.4 | 19.8 ± 4.6 | 20.1 ± 3.5 | G × T = 0.032 | |
| Leg press endurance (repetitions) | RT2 | 20.7 ± 7.0 | 24.1 ± 4.2*,‡ | 26.5 ± 5.4*,‡ | G = 0.07 |
| RT4 | 19.4 ± 4.8 | 27.0 ± 4.9*,‡ | 27.2 ± 6.4*,‡ | T = 0.001 | |
| CG | 20.2 ± 3.3 | 20.8 ± 5.5 | 19.3 ± 4.2 | G × T = 0.041 | |
| Countermovement jump (cm) | RT2 | 37.3 ± 4.4 | 41.7 ± 5.2*,‡ | 43.7 ± 3.3*,‡ | G = 0.36 |
| RT4 | 37.8 ± 4.6 | 41.6 ± 3.4*,‡ | 42.8 ± 5.5*,‡ | T = 0.021 | |
| CG | 37.4 ± 3.7 | 37.0 ± 3.9 | 37.1 ± 4.6 | G × T = 0.047 | |
| Medicine ball throw (m) | RT2 | 3.49 ± 0.52 | 3.64 ± 0.45*,‡ | 3.72 ± 0.37*,‡ | G = 0.87 |
| RT4 | 3.72 ± 0.5 | 3.86 ± 0.58*,‡ | 3.99 ± 0.65*,‡ | T = 0.029 | |
| CG | 3.49 ± 0.35 | 3.48 ± 0.4 | 3.49 ± 0.51 | G × T = 0.048 | |
Notes:
*
Significant differences compared to pre-value.
†
Significant differences compared to mid-value.
‡
Significant differences compared to CG.
**
Significant differences between training groups.
RT2: 2 times per week resistance training, RT4: 4 times per week resistance training, CG: control group.
G: group, T: time.