Effects of Exercise Training on the Recovery of the Autonomic Nervous System and Exercise Capacity After Acute Myocardial Infarction

Oya, Misa; Itoh, Hidenori; Kato, Kazuzo; Tanabe, Kazuhiko; Murayama, Masahiro

doi:10.1253/jcj.63.843

Cited by 51 publications

(33 citation statements)

References 27 publications

(26 reference statements)

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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: 88%

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: 88%

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

et al. 2012

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“…34 It has also been reported that reduced parasympathetic nervous activity participates in the increased HR at low-intensity exercise in healthy subjects. 43,44 The present study demonstrated that the increase in HR could be mainly attributed to decreased parasympathetic nervous activity in group A, and predominantly to increased sympathetic nervous activity with a smaller decrease in parasympathetic nervous activity in group B.…”

Section: Discussionsupporting

confidence: 54%

Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Matsunaga¹,

Masuda²,

Ogura³

et al. 2004

Circ J

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BackgroundThe adaptation of patients with acute myocardial infarction (AMI) to a phase I rehabilitation program has not been widely assessed. Methods and Results Forty-two male patients (62±8 years) with AMI were classified as exercise tolerant (group A, n=25) or excessive response (systolic blood pressure (SBP) increase >30 mmHg during exercise; group B, n=17). Hemodynamic parameters during exercise using a cycle-ergometer were monitored for the first 3 days. The power of low-and high-frequency components (LF: 0.05-0.2 Hz; HF: 0.2-1 Hz) was analyzed by heart rate variability. Anxiety status was assessed using the Spielberger's State-Trait Anxiety Inventory. Patients in group B were significantly older, had lower cardiac function and a longer hospitalization than group A (p<0.05, respectively). The excessive elevation of SBP on Day 1 decreased and became <30 mmHg on Day 3 in group B. The decreases in HF during exercise on Days 1 and 3 were significantly smaller in group B than in group A (p<0.05 and p<0.05, respectively). The LF/HF ratio on Day 1 was significantly higher in group B than in group A (p<0.05). In group B, the anxiety score before exercise was significantly higher than that at the time of discharge (p<0.05), whereas there was no change in group A. Conclusion Factors influencing a significant elevation of blood pressure during phase I rehabilitation are age, physical deconditioning, imbalance of autonomic nervous activity and anxiety. (Circ J 2004; 68: 938 -945)

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“…Researchers have also reported that a two-week exercise program consisting of two 30 min daily sessions of cycle ergometry at the anaerobic threshold facilitated parasympathetic nervous system activity recovery after an MI more quickly than for those participating in a walking cardiac rehabilitation program (54). Specifically, the delta value of HF was significantly greater for MI patients randomly assigned to the cycle ergometry exercise program compared with individuals participating in the walking program (30±6 ms 2 versus 10±8 ms 2 ).…”

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

276

206

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Effects of Exercise Training on the Recovery of the Autonomic Nervous System and Exercise Capacity After Acute Myocardial Infarction

Cited by 51 publications

References 27 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

Adaptation to Low-Intensity Exercise on a Cycle Ergometer by Patients With Acute Myocardial Infarction Undergoing Phase I Cardiac Rehabilitation

Improvements in heart rate variability with exercise therapy

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