Table 1.

Effects of HIIT at 3 and 6 months. Data presented as mean (SD).

HIIT group Baseline Follow-upControl group Baseline Follow-upnMean group difference (95%CI)ap
VO2peak, mL/kg/min Baseline to 3 monthsBaseline to 6 months30.4 (5.9)30.4 (5.9)32.9 (6.4) 33.2 (7.4)30.1 (7.9)30.4 (8.0)30.3 (7.5)30.7 (7.8)60§ 60§2.5 (0.9-4.0) 2.6 (0.8-4.3)<0.01 <0.01
Fatigue, NRS 0-10, 0= no fatigue Baseline to 3 monthsBaseline to 6 months3.1 (2.1)3.1 (2.1)3.0 (1.9)3.1 (2.2)3.6 (2.5)3.6 (2.5)3.5 (2.7)3.8 (2.4)59 58-0.1 (-0.9-0.8)-0.4 (-1.2-0.5)b0.87 0.41
Pain, NRS 0-10, 0= no pain Baseline to 3 monthsBaseline to 6 months2.9 (2.1) 2.9 (2.2)2.8 (1.8)2.9 (2.0)2.9 (2.5)2.9 (2.5)3.1 (2.7)3.2 (2.4)59 58-0.3 (-1.3-0.7)b -0.4 (-1.2-0.5)0.57 0.38
  • § Primary analysis with multiple imputation of estimate, n=60. aANCOVA; gender, group, age and baseline value as covariates. bBootstrap CI with 10000 replications. HIIT: High-intensity Interval Training, NRS: Numeric rating scale, VO2peak: Peak oxygen uptake