Article

We tested the hypothesis that higher-intensity interval training (HIIT)
could be deployed into a standard cardiac rehabilitation (CR) setting and would
result in a greater increase in cardiorespiratory fitness (ie, peak oxygen
uptake, (.)VO(2)) versus moderate-intensity continuous training (MCT). METHODS:
Thirty-nine patients participating in a standard phase 2 CR program were
randomized to HIIT or MCT; 15 patients and 13 patients in the HIIT and MCT
groups, respectively, completed CR and baseline and followup cardiopulmonary
exercise testing. RESULTS: No patients in either study group experienced an event
that required hospitalization during or within 3 hours after exercise. The
changes in resting heart rate and blood pressure at followup testing were similar
for both HIIT and MCT. (.)VO(2) at ventilatory-derived anaerobic threshold
increased more (P < .05) with HIIT (3.0 +/- 2.8 mL.kg(-)(1).min(-)(1)) versus MCT
(0.7 +/- 2.2 mL.kg(-)(1).min(-)(1)). During followup testing, submaximal heart
rate at the end of stage 2 of the exercise test was significantly lower within
both the HIIT and MCT groups, with no difference noted between groups. Peak
(.)VO(2) improved more after CR in patients in HIIT versus MCT (3.6 +/- 3.1
mL.kg(-)(1).min(-)(1) vs 1.7 +/- 1.7 mL.kg(-)(1).min(-)(1); P < .05).
CONCLUSIONS: Among patients with stable coronary heart disease on evidence-based
therapy, HIIT was successfully integrated into a standard CR setting and, when
compared to MCT, resulted in greater improvement in peak exercise capacity and
submaximal endurance.

Langue : ANGLAIS

Tiré à part : OUI