ABC | Volume 110, Nº2, February 2018

Review Article Perrier-Melo et al Interval exercise in heart transplant recipients Arq Bras Cardiol. 2018; 110(2):188-194 Figure 2 – Forest plot (A) AND funnel plot (B) showing information about the effect of high-intensity interval training (HIIT) on VO 2 peak. Heterogeneity: Chi 2 = 1.69, df = 2 (p = 0.43); I 2 = 0% Test for overall effect: Z = 3.80 (p = 0.0001) Haykowsky 2009 24.7 8.8 22 18.2 5.3 21 28.3% 6.50 [2.18, 10.82] 2009 Hermann 2011 28.3 6.1 14 23.4 5.7 13 26.6% 4.90 [0.45, 9.35] 2011 Nytroen 2012 30.9 5.3 24 28 6.7 24 45.1% 2.90 [–0.52, 6.32] 2012 Total (95% CI) 60 58 100.0% 4.45 [2.15, 6.75] Study or Subgroup Mean SD Mean SD HIIT Control Mean Difference Mean Difference Total Total Weight IV, Fixed, 95% CI IV, Fixed, 95% CI Year Favours CON Favours HIIT –20 –10 0 10 20 0 1 2 3 4 5 –20 –10 10 20 0 SE (MD) MD Figure 3 – Forest plot (A) AND funnel plot (B) showing information about the effect of high-intensity interval training (HIIT) on peak heart rate. Heterogeneity: Chi 2 = 0.52, df = 1 (p = 0.47); I 2 = 0% Test for overall effect: Z = 3.52 (p = 0.0004) Haykowsky 2009 154 15 22 139 20 21 39.5% 15.00 [4.40, 25.60] Nytroen 2012 163 13 24 153 17 24 60.5% 10.00 [1.44, 18.56] Total (95% CI) 46 45 100.0% 11.97 [5.31, 18.63] HIIT Control Mean Difference Mean Difference Study or Subgroup Mean SD Mean SD Total Total Weight IV, Fixed, 95% CI IV, Fixed, 95% CI Favours CON Favours HIIT –20 –10 0 10 20 0 2 4 6 8 10 –20 –10 10 20 0 SE (MD) MD 193