OBJECTIVETo evaluate the effects of resistance exercise applied early after coronary
artery bypass grafting.METHODSIt is a randomized controlled trial with 34 patients undergoing coronary
artery bypass grafting between August 2013 and May 2014. Patients were
randomized into two groups by simple draw: a control group (n=17), who
received conventional physical therapy and an intervention group (n=17), who
received, additionally, resistance exercise. Pulmonary function and
functional capacity were evaluated in preoperative period and hospital
discharge by spirometry and the six-minute walk test. For statistical
analysis, we used the following tests: Shapiro-Wilk, Mann-Whitney, Student's
t and Fisher's exact. Variables with
P<0.05 were considered significant.RESULTSGroups were homogeneous in terms of demographic, clinical and surgical
variables. Resistance exercise exerted no effect on pulmonary function of
intervention group compared to control group. However, intervention group
maintained functional capacity at hospital discharge measured by percentage
of predict distance in 6MWT (54.122.7% vs. 52.515.5%,
P=0.42), while control group had a significant decrease
(59.211.1% vs. 50.69.9%, P<0.016).CONCLUSIONOur results indicate that resistance exercise, applied early, may promote
maintenance of functional capacity on coronary artery bypass grafting
patients, having no impact on pulmonary function when compared to
conventional physical therapy.
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