Results of a study that compared the effectiveness of 2 different volumes of resistance training (RT) combined with aerobic training in residential cardiac rehabilitation (CR) show that nearly doubling the volume of RT as part of a residential CR program does not yield further improvement in strength and cardiovascular risk factors.
This randomized prospective cohort study, conducted at a center for inpatient CR, included 295 patients aged 62.7±11.7 (mean ± SD). Patients were randomly divided into 2 groups (group 1 and group 2) with different volumes of RT; 2 sets × 12 repetitions (group 1) and 3 sets × 15 repetitions (group 2) per session, 2 times per week. Each RT session consisted of 10 different resistance exercises. In addition, patients completed continuous moderate intensity aerobic training composed of cycle ergometry 6 times per week for 17±4 minutes and walking 5 times per week for 45 minutes.
At entry and after 26±4 days of CR, blood pressure, heart rate, maximal oxygen consumption, maximal power determined during cycle ergometry, strength determined via RT, and blood biochemistries were assessed. Data were analyzed via a 2-way (group × time) repeated measures analysis of variance.
Statistical analysis revealed equivalent improvements in exercise capacity, muscular strength, hemodynamics, and blood chemistries regardless of RT volume.
This article is available in the October issue of Archives of Physical Medicine and Rehabilitation.