Transient ischemic attack (TIA) patients are often at high risk for a recurrent stroke or cardiovascular event due to an elevated cardiovascular disease risk (CVD) profile.1 Physical inactivity is one such risk factor that contributes to the increased risk of a recurrent vascular event. Preliminary evidence suggests that TIA patients in the non-acute phase can improve cardiovascular fitness and reduce vascular risk following exercise training.1,2 The purpose of the present study was to examine the efficacy of a short-term exercise programme on physical fitness in TIA patients. Sixty newly diagnosed TIA patients were randomised into one of two conditions: i) Health-Enhancing Physical Activity Programme (HEPAP; n = 30) or ii) Control group (n = 30). All participants underwent baseline assessment (BL) comprising standard measures of CVD risk and a graded-exercise test (GXT) using a modified Bruce treadmill protocol. Heart rate (HR), blood pressure (systolic: SBP) and the ratings of perceived exertion (RPE; Borg 6-20 scale3) were recorded at the end of each GXT stage. The HEPAP group then underwent an 8-week exercise programme, whereas, the Control group remained as ‘usual care’, before all participants completed a post-intervention assessment (PI) comprising the aforementioned measures, which was repeated 3-months subsequently (3PI). Data presented is based upon the first two GXT stages from BL, PI and 3PI. ANOVA revealed a greater change in HR between BL and PI for HEPAP (105±19 cf. 91±16 b●min-1, respectively) than Control (107±19 cf. 102±16 b●min-1, respectively; P<0.05). A greater decrease in SBP was also observed between BL and PI for HEPAP (167±18 cf. 150±16 mmHg, respectively) than Control (159±19 cf. 156±17 mmHg, respectively; P<0.05). An RPE interaction signified that the rate of change in RPE between stages 1 and 2 of the GXT was significantly lower for HEPAP (8.5±1.8 & 10.5±1.6, respectively) than for Control (9.0±1.7 & 11.6±1.8, respectively; P<0.05). Despite similarities in BL exercise duration for HEPAP and Control (7.0±2.9 cf. 6.6±2.7 min, respectively), PI exercise duration was significantly increased for HEPAP (10.5±3.0 cf. 7.5±3.1 min, respectively; P<0.05). ANOVA revealed no changes in HR, SBP, RPE or exercise duration between PI and 3PI (P>0.05). TIA patients exercised longer, for a lower physiological and psychological cost following a HEPAP than those who did not perform structured physical activity. Of particular importance, systolic blood pressure (a key cerebrovascular risk factor) decreased to a greater extent for HEPAP than for Control. As HEPAP participants maintained their physical fitness level 3-months following the completion of the exercise intervention, physical activity programmes should be encouraged as a rehabilitative strategy for newly-diagnosed TIA patients.
Physiology 2012 (Edinburgh) (2012) Proc Physiol Soc 27, PC131
Poster Communications: Efficacy of an 8-week exercise programme on short- and long-term cardiovascular fitness in newly-diagnosed Transient Ischaemic Attack patients
D. Lambrick1, J. Faulkner2, B. Woolley2, L. Stoner2, L. Wong3, G. McGonigal4
1. Institute of Food, Nutrition and Human Health, Massey University, Wellington, New Zealand. 2. School of Sport and Exercise, Massey University, Wellington, New Zealand. 3. Internal Medicine, Wellington Regional Hospital, Wellington, New Zealand. 4. County Durham and Darlington Foundation Trust, Durham, United Kingdom.
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Where applicable, experiments conform with Society ethical requirements.