Effects of high-intensity interval training in a three-week cardiovascular rehabilitation: a randomized controlled trial.

Objective: The aim of this study was to assess the benefit of using high-intensity interval training for cardiovascular patients undergoing outpatient rehabilitation in a standard short-term (three-week) program in Germany.

Design: This is a randomized controlled trial (RCT).

Setting: This study was conducted at Cardiowell (Wuppertal, Germany), an outpatient rehabilitation center.