Table 2 Fitness measures at baseline and after 12 weeks for the equal-attention control and behavioral modification groups.
| Fitness Measures | Equal-Attention (n=17; 10 males) | Behavioral Modification (n=15; 9 males) | P-between | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Baseline | 12 Weeks† | Change | P-within | Baseline | 12 Weeks‡ | Change | P-within | ||
| Age | 33.3 (6.3) | - | - | - | 32.7 (4.7) | - | - | - | 0.748 |
| Body weight (kg) | 72.7 (12.6) | 72.5 (12.0) | −0.3 (1.8) | 0.530 | 74.5 (11.6) | 74.1 (10.5) | −0.4 (2.7) | 0.538 | 0.859 |
| BMI (kg/m 2 ) | 23.8 (2.6) | 23.7 (2.3) | −0.1 (0.6) | 0.577 | 25.0 (3.1) | 24.9 (2.9) | −0.1 (0.9) | 0.630 | 0.922 |
| Body fat (%) | 20.1 (7.1) | 18.6 (6.8) | −1.4 (1.9) | 0.006 | 22.1 (6.5) | 18.5 (6.5) | −3.6 (2.6) | <0.001 | 0.011 |
| Fat mass (kg) | 14.6 (5.7) | 13.3 (5.1) | −1.3 (1.7) | 0.006 | 16.5 (5.7) | 13.8 (5.6) | −2.7 (1.7) | <0.001 | 0.021 |
| Fat-free mass (kg) | 58.3 (12.1) | 59.2 (12.1) | 0.9 (1.9) | 0.083 | 58.1 (10.5) | 60.4 (9.4) | 2.3 (3.4) | 0.021 | 0.165 |
| CP 1-RM (kg) | 62.1 (26.5) | 73.8 (28.9) | 11.6 (9.7) | <0.001 | 58.9 (25.4) | 75.0 (31.0) | 16.1 (16.3) | 0.002 | 0.551 |
| LP 1-RM (kg) | 92.4 (33.4) | 120.7 (36.2) | 28.3 (14.5) | <0.001 | 104.8 (39.3) | 134.2 (54.4) | 29.5 (20.4) | 0.001 | 0.766 |
| CP 85% 1-RM (kg) | 52.8 (22.5) | 62.7 (24.6) | 9.9 (8.3) | <0.001 | 50.0 (21.6) | 63.7 (26.4) | 13.7 (13.8) | 0.002 | 0.551 |
| CP 85% 1-RM (reps) | 5.2 (1.9) | 7.1 (2.0) | 1.9 (2.6) | 0.008 | 5.0 (1.4) | 7.9 (1.9) | 2.9 (1.7) | 0.001 | 0.207 |
| LP 85% 1-RM (kg) | 78.5 (28.4) | 102.6 (30.8) | 24.0 (12.3) | <0.001 | 89.1 (33.4) | 114.1 (46.2) | 25.0 (17.3) | 0.001 | 0.766 |
| LP 85% 1-RM (reps) | 7.2 (2.6) | 9.2 (4.1) | 1.9 (3.7) | 0.067 | 7.5 (3.9) | 8.6 (2.3) | 1.1 (4.0) | 0.076 | 0.823 |
| Leg power peak (W) | 7861 (349) | 8161 (471) | 300 (208) | <0.001 | 7760 (339) | 8283 (374) | 523 (190) | <0.001 | 0.006 |
| Leg power avg (W) | 1597 (145) | 1733 (126) | 137 (58) | <0.001 | 1534 (138) | 1746 (167) | 212 (79) | <0.001 | 0.005 |
| VO 2 max (L/min) | 3.06 (0.64) | 3.29 (0.65) | 0.23 (0.08) | <0.001 | 3.13 (0.53) | 3.57 (0.51) | 0.44 (0.12) | <0.001 | <0.001 |
| rVO 2 max (mL/min/kg) | 42.1 (5.1) | 45.4 (4.9) | 3.3 (1.0) | <0.001 | 42.6 (7.9) | 48.7 (7.1) | 6.1 (2.1) | <0.001 | <0.001 |
| VO 2 θ (L/min) | 2.03 (0.39) | 2.38 (0.42) | 0.34 (0.13) | <0.001 | 2.12 (0.32) | 2.76 (0.37) | 0.64 (0.13) | <0.001 | <0.001 |
| VO 2 θ/VO 2 max (%) | 67 (5) | 73 (6) | 6 (3) | <0.001 | 68 (6) | 77 (5) | 9 (3) | <0.001 | 0.009 |
| VCO 2 θ (L/min) | 2.79 (0.54) | 3.01 (0.59) | 0.22 (0.10) | <0.001 | 2.90 (0.53) | 3.26 (0.50) | 0.36 (0.13) | <0.001 | 0.098 |
Values are mean (SD). No significant differences were observed between groups at baseline. VO 2 max=maximum oxygen uptake; rVO 2 max=maximum oxygen uptake normalized by body mass; VO 2 θ=oxygen uptake at metabolic threshold; VO 2 θ/VO 2 max=metabolic threshold as a percent of maximum oxygen uptake; VCO 2 θ=oxygen uptake at ventilatory threshold; BMI=body mass index; CP=chest press; 1-RM=1-repetition maximum; LP=leg press