High-intensity Interval Exercise in Chronic Heart Failure: Protocol Optimization

Overview

Journal J Card Fail

Specialty Cardiology & Vascular Diseases

Date 2012 Feb 4

PMID 22300780

Citations 21

Authors

Philippe Meyer

Eve Normandin

Mathieu Gayda

Guillaume Billon

Thibaut Guiraud

Laurent Bosquet

Annick Fortier

Martin Juneau

Michel White

Anil Nigam

Affiliations

Soon will be listed here.

Abstract

Background: There are little data on the optimization of high-intensity aerobic interval exercise (HIIE) protocols in patients with chronic heart failure (CHF). Therefore, we compared acute cardiopulmonary responses to 4 different HIIE protocols to identify the optimal one.

Methods And Results: Twenty men with stable systolic CHF performed 4 different randomly ordered single HIIE sessions with measurement of gas exchange. For all protocols (A, B, C, and D) exercise intensity was set at 100% of peak power output (PPO). Interval duration was 30 seconds (A and B) or 90 seconds (C and D), and recovery was passive (A and C) or active (50% of PPO in B and D). Time spent above 85% of VO(2peak) and time above the ventilatory threshold were similar across all 4 HIIE protocols. Total exercise time was significantly longer in protocols with passive recovery intervals (A: 1,651 ± 347 s; C: 1,574 ± 382 s) compared with protocols with active recovery intervals (B: 986 ± 542 s; D: 961 ± 556 s). All protocols appeared to be safe, with exercise tolerance being superior during protocol A.

Conclusion: Among the 4 HIIE protocols tested, protocol A with short intervals and passive recovery appeared to be superior.

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