Key result
HIIT yields ~3% greater VO2 peak improvement than moderate continuous training, with similar functional gains.
Why the study?
Does high intensity interval training improve physical fitness and quality of life compared to moderate intensity continuous training in male patients with chronic heart failure?
Population
22 male patients with chronic heart failure (LVEF < 45%), mean age 53.8 ± 8 years.
Comparison
High intensity interval training on a treadmill… vs Moderate intensity continuous training on a…
Design
RCT, randomly (1:1)
Follow-up
12 weeks
Authors
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HIIT yields greater VO2 peak gains than MICT in HF while matching QoL and functional benefits; extends RCT evidence supporting intensified exercise protocols.
RCT (n=22)
1:1
Does high intensity interval training improve physical fitness and quality of life compared to moderate intensity continuous training in male patients with chronic heart failure?
Absolute Event Rate: 11.2% vs 8.3%
p-value: p=<0.01
Both high intensity interval training and moderate intensity continuous training effectively improve quality of life and functional capacity in male patients with heart failure, though HIIT provides a statistically greater improvement in VO2 peak.
Ulbrich et al. (2015) conducted an RCT in chronic heart failure (n=22). High intensity interval training (HIIT) vs. Moderate intensity continuous training (MICT) at 75% of peak HR was evaluated on VO2 peak improvement (p=<0.01). High intensity interval training improved VO2 peak more than moderate intensity continuous training (11.2% vs 8.3%, p<0.01), while both equally improved quality of life and functional capacity.
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