Changes in short-term measures of heart rate variability after eight weeks of cardiac rehabilitation

Sandercock, Gavin; Grocott-Mason, Richard; Brodie, David A.

doi:10.1007/s10286-007-0392-5

Cited by 56 publications

(37 citation statements)

References 31 publications

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“…Our results are confirmed by that of Jurca et al in 2004 who, after 8 weeks of moderate exercise training in females, showed improved vagal modulation of heart rate on 10-min resting ECGs [36]. Many previous studies done on diseased populations to evaluate the effect of short-term exercise intervention on short-term HRV modification assessed only supine variables [37][38][39][40][41][42][43]. Sandercock et al in 2007 observed significant increases in the supine RR interval, SDRR, LF(ln) and HF In the present study, only the RR interval increased significantly in the supine position, while the other variables did not show significant changes in favour of the exercise group.…”

Section: Discussionsupporting

confidence: 90%

Effect of exercise on cardiac autonomic function in females with rheumatoid arthritis

et al. 2012

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The objective of this study is to evaluate the effect of exercise on cardiac autonomic function as measured by short-term heart rate variability (HRV) in females suffering from rheumatoid arthritis (RA). Females with confirmed RA were randomly assigned to an exercise group (RAE) and a sedentary group (RAC). RAE was required to train under supervision two to three times per week, for 3 months. Three techniques (time domain, frequency domain and Poincaré plot analyses) were used to measure HRV at baseline and study completion. At baseline, RAC (n018) had a significantly higher variability compared to RAE (n019) for most HRV indicators. At study completion, the variables showing significant changes (p00.01 to 0.05) favoured RAE in all instances. Wilcoxon signed rank tests were performed to assess changes within groups from start to end. RAE showed significant improvement for most of the standing variables, including measurements of combined autonomic influence, e.g. SDRR (p00.002) and variables indicating only vagal influence, e.g. pNN50 (p00.014). RAC mostly deteriorated with emphasis on variables measuring vagal influence (RMSSD, pNN50, SD1 and HF (ms 2 )). Study results indicated that 12 weeks of exercise intervention had a positive effect on cardiac autonomic function as measured by short-term HRV, in females with RA. Several of the standing variables indicated improved vagal influence on the heart rate. Exercise can thus potentially be used as an instrument to improve cardiac health in a patient group known for increased cardiac morbidity.

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Section: Discussionsupporting

confidence: 90%

Effect of exercise on cardiac autonomic function in females with rheumatoid arthritis

et al. 2012

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“…This shift toward greater vagal modulation may positively affect the prognosis of individuals with a variety of morbidities (53). (57) found that following an eight-week cardiac rehabilitation program, 21 male and 17 female participants had significant increases in HRV parameters compared with those not participating in the training program. In another study (58), researchers reported a 25% increase in SDNN, a 69% increase in the square root of the mean of the sum of squares of successive N-N interval differences, a 120% increase in the number of successive N-N intervals differing by more than 50 ms divided by the total number of successive N-N intervals and a 30% reduction in LF/HF ratio after 22 MI patients completed an eight-week endurance rehabilitation program.…”

Section: Exercise Therapy and Hrv Modification In Clinical Populationsmentioning

confidence: 99%

Improvements in heart rate variability with exercise therapy

Routledge

Campbell

McFetridge-Durdle

et al. 2010

Canadian Journal of Cardiology

285

206

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“…The outcomes of these tests provide important information regarding exercise capacity and effectiveness of rehabilitation treatments [4]. They are used in exercise prescription and risk stratification [5].…”

Section: Introductionmentioning

confidence: 99%

Predictors of shuttle walking test performance in patients with cardiovascular disease

et al. 2013

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Objective The incremental shuttle walking test (ISWT) is used to estimate cardiorespiratory fitness, but data from healthy individuals suggest that demographic and anthropometric measures account for much of the variance in test performance. The aim of this study was to determine whether anthropometric, demographic and selected gait measures also predict ISWT performance (i.e. distance walked) in patients with cardiovascular disease. Design Observational study. Setting A community-based cardiac rehabilitation centre (Cohort 1) and a hospital outpatient cardiac rehabilitation programme (Cohort 2). Participants Sixteen patients with clinically stable cardiovascular disease (Cohort 1) and 113 patients undergoing cardiac rehabilitation (Cohort 2). Interventions Patients in Cohort 1 performed the ISWT on two occasions. Anthropometric data and walking and turning variables were collected. Linear regression analyses were used to identify the predictors of test performance. The authors subsequently attempted to validate the equation created by comparing predicted and actual ISWT values in a larger (n = 113) validation sample (Cohort 2). Main outcome measures Distance walked during ISWT, step length and height. Results No gait or turning measures were significantly associated with ISWT performance. Distance walked correlated most strongly with step length (r = 0.83, P < 0.05) and height (r = 0.74, P < 0.05). Given the similarity of these correlations and the rarity of step length assessment in clinical practice, ISWT performance was predicted using patient's height; this explained 55% of the variance in ISWT performance. Height was also the best predictor in Cohort 2, explaining 17% of test variance (P < 0.01). Body mass index explained an additional 3% of variance (P < 0.05) in ISWT performance. Conclusions Routine clinical measures, particularly patient's height, are predictive of ISWT performance. The findings of the present study are in partial agreement with similar studies performed in healthy individuals, and it remains unclear whether the ISWT performance of patients with cardiovascular disease is influenced by the same factors as the ISWT performance of healthy individuals.

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Changes in short-term measures of heart rate variability after eight weeks of cardiac rehabilitation

Cited by 56 publications

References 31 publications

Effect of exercise on cardiac autonomic function in females with rheumatoid arthritis

Effect of exercise on cardiac autonomic function in females with rheumatoid arthritis

Improvements in heart rate variability with exercise therapy

Predictors of shuttle walking test performance in patients with cardiovascular disease

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