ECG Response to Water and Land Based Exercise in Patients with Cardiovascular

Abstract

The purpose of this study was to compare the ECG response during land, based (LB) and. water based (WB) exercise rehabilitation of cardiac patients. Thirty-seven patients (JOURNAL/jcrh/04.02/00008483-199001000-00001/ENTITY_OV0335/v/2017-08-08T011905Z/r/image-png age = 55.6 ± 5.0 yrs; 19 Myocardial Infarction; 4 Coronary Bypass Surgery; 5 Angina; 5 Silent Ischemia; 4 Other) completed a maximal exercise test (GXT) (X HRmax= 132 ± 23 bpm; JOURNAL/jcrh/04.02/00008483-199001000-00001/ENTITY_OV0335/v/2017-08-08T011905Z/r/image-png BPmax = 170/85 ± 21/19 mmHg;JOURNAL/jcrh/04.02/00008483-199001000-00001/ENTITY_OV0335/v/2017-08-08T011905Z/r/image-png functional capacity = 9 Mets) and participated in both the LB and WB exercise programs. Both LB and WB were designed to use varying arm and leg exercises eliciting a heart rate response of 70–85% of attained HR max for 40–50 minutes, excluding warm-up and cool down. The ECG was continuously monitored by telemetry during LB and WB, and evaluated for arrhythmias and ST changes. The mean exercise HR was 98 ± 15 bpm and 104 ±17 bpm during LB and swimming WB respectively, which was not significantly different (P > 0.05). Significant ST segment depression was present in 14 subjects during the GXT (38%) and in seven subjects (19%) during both LB and WB (Chi-Square = 4.7; P > 0.05). Ectopy was present in nine (24%) subjects during the GXT and in 14 (38%) and two (5%) subjects during LB and WB respectively (Chi-Square = 11.3; P