Effect of high and low frequency exercise therapy in patients after coronary artery bypass graft surgery

Periyasami, Muruganandam, Rao, Pasupuleti Visweswara and Soon, Jan Mei orcid iconORCID: 0000-0003-0488-1434 (2017) Effect of high and low frequency exercise therapy in patients after coronary artery bypass graft surgery. The Lancet, 389 (S79). ISSN 0140-6736

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Official URL: http://dx.doi.org/10.1016/S0140-6736(17)30475-0


Background Coronary artery bypass graft (CABG) surgery is one of the major surgeries requiring long-term stay in hospital. This generally leads to the detrimental effects of bed-rest, including dependency in self-care, transfer, and locomotion. Our aim was to compare the effect of high-frequency and low-frequency exercise therapy in patients who had undergone CABG.
Methods Patients who had undergone CABG were recruited from PSG Medical College and Hospital, Coimbatore, India, between Jan 1 and March 31, 2006. Functional Independence Measure (FIM) and modified Borg Rating of Perceived Exertion (RPE) were used to assess functional outcome. In a quasi-experimental design, patients received either high-frequency exercise therapy (exercise three times a day for 10 days, group 1), or low-frequency exercise therapy (once a day for 10 days, group 2). Data were analysed with paired t tests.
Findings 30 patients were recruited (15 in each group). Mean FIM was 75 (SD 1·77) in group 1 and 64 (1·65) in group 2. There was a significant difference between the pretest and post-test FIM values in group 1 patients (49·07 [2·43] vs 124·07 [1·75], p<0·0001) but not in group 2 patients. The RPE in group 1 and group 2 was 6·3 (0·62) and 4·2 (0·7), respectively.
Interpretation Patients given high-frequency exercise thearpy had a significant improvement in their physical activity, but low-frequency exercise did not lead to significantly improved changes. In conclusion, the high-frequency exercise therapy improves the functional ability of patients with CABG.
Funding None.

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