IJCS | Volume 31, Nº4, July / August 2018

400 Macedo et al. Periodized model for prescribed exercises Int J Cardiovasc Sci. 2018;31(4)393-404 Original Article Table 3 - Body composition parameters Group PG (n = 28) p NPG (n = 32) p Pre Post Pre Post Body fat (%) 24.0 ± 3.5 21.9 ± 3.6 0.03* 23.9 ± 4.4 22.9 ± 4.1 0.34 Fat above ideal (%) 6.7 ± 3.2 4.8 ± 2.9 0.02* 5.6 ± 5.7 4.5 ± 5 0.42 Body mass (kg) 85.9 ± 11.7 77.4 ± 9.7 0.02* 83.9 ± 15.1 83.2 ± 14.9 0.84 PG: periodized exercise training group; NPG: non-periodized exercise training group. *p < 0.05 (Student t test) within-group differences. Table 4 - Cardiopulmonary testing Group PG (n = 28) p NPG (n = 32) p Pre Post Pre Post FCR (% of predicted value) 88.7 ± 12.4 101.9 ± 13.8 † 0.00* 80.2 ± 15.3 86.5 ± 12.2 † 0.00* VO 2 peak (mL/kg/min -1 ) 27.2 ± 6.3 31.5 ± 7.3 † 0.00* 22.9 ± 5.7 24 ± 6 † 0.00* VO 2 VT2 23.64 ± 4.8 27.7 ± 3 † 0.00* 19.9 ± 5.4 21.6 ± 5.4 † 0.04* VO 2 VT1 17.0 ± 2.3 20.7 ± 2.3 † 0.00* 15.8 ± 3.5 16.4 ± 3.4 † 0.23 HR maximum reached 159.7 ± 22 162.6 ± 18.5 0.30 138.3 ± 18.3 136.1 ± 18.6 0.33 HR VT2 169.9 ± 21 141.9 ± 20.5 0.39 119.2 ± 16.2 118.8 ± 15.8 0.86 HR VT1 110 ± 14.5 114.3 ± 15.7 0.10 100 ± 15.6 96.1 ± 20.6 0.29 Maximum speed reached (km/h) 8.2 ± 2.4 8.8 ± 2.4 0.05* 6.8 ± 1.9 7.2 ± 1.9 0.19 Speed VT2 (km/h) 7.1 ± 1.8 7.9 ± 1.8 0.05* 5.7 ± 1.5 6.3 ± 1.3 0.02* Speed VT1 (km/h) 5.4 ± 1.4 6 ± 1.9 0.06 4.5 ± 1.3 4.8 ± 1 0.12 % max inclination (degrees) 13 ± 6.1 14.3 ± 6.1 0.12 12.3 ± 4.4 13.8 ± 4.3 0.12 % inclination VT2 (degrees) 12 ± 5.4 12.5 ± 6.6 0.45 10.3 ± 4 12.2 ± 3.3 0.01* % inclination VT1 (degrees) 8.4 ± 4.2 9.6 ± 5.2 0.14 7.4 ± 3.2 8.7 ± 3 0.05* PG: periodized exercise training group; NPG: non-periodized exercise training group; FCR: functional capacity reached; HR: heart rate; * Intra-group difference (Student t test for dependent samples, p ≤ 0.05); † Difference between groups (Student t test, p < 0.05). of periodization as a fundamental basis for exercise prescription in cardiac rehabilitation programs could improve the results in VO 2 peak. Cardiopulmonary testing The two training groups showed improvements in VO 2 peak and in the VO 2 of the VT2, but only the PG showed a significant increase in the VO 2 of the VT1. VO 2 peak is an independent predictor of mortality and morbidity in CAD patients. 6 In the comparison between groups, the PG showed a significant effect compared to the NPG. Also, both groups improved their functional capacity (% of the predicted value), withmost significant differences in favor of PG, which were attributed to the better structuring of the load progression in this group. The classical approach to periodization is the linear periodized training that appears in exercise training