PMID- 30945205 OWN - NLM STAT- MEDLINE DCOM- 20200327 LR - 20200327 IS - 1179-2035 (Electronic) IS - 0112-1642 (Linking) VI - 49 IP - 5 DP - 2019 May TI - Exercise Frequency Determines Heart Rate Variability Gains in Older People: A Meta-Analysis and Meta-Regression. PG - 719-729 LID - 10.1007/s40279-019-01097-7 [doi] AB - BACKGROUND: Previous studies have suggested that exercise training improves cardiac autonomic drive in young and middle-aged adults. In this study, we discuss the benefits for the elderly. OBJECTIVES: We aimed to establish whether exercise still increases heart rate variability (HRV) beyond the age of 60 years, and to identify which training factors influence HRV gains in this population. METHODS: Interventional controlled and non-controlled studies were selected from the PubMed, Ovid, Cochrane and Google Scholar databases. Only interventional endurance training protocols involving healthy subjects aged 60 years and over, and measuring at least one heart rate global or parasympathetic index, such as the standard deviation of the normal-to-normal intervals (SDNN), total frequency power (Ptot), root mean square of successive differences between adjacent NN intervals (RMSSD), or high frequency power (HF) before and after the training intervention, were included. HRV parameters were pooled separately from short-term and 24 h recordings for analysis. Risks of bias were assessed using the Methodological Index for Non-Randomized Studies and the Cochrane risk of bias tool. A random-effects model was used to determine effect sizes (Hedges' g) for changes, and heterogeneity was assessed using Q and I statistics. RESULTS: Twelve studies, seven of which included a control group, including 218 and 111 subjects, respectively (mean age 69.0 +/- 3.2 and 68.6 +/- 2.5), were selected for meta-analysis. Including the 12 studies demonstrated homogeneous significant effect sizes for short-term (ST)-SDNN and 24 h-SDNN, with effect sizes of 0.366 (95% CI 0.185-547) and 0.442 (95% CI 0.144-0.740), respectively. Controlled study analysis demonstrated homogeneous significant effect sizes for 24 h-SDNN with g = 0.721 (95% CI 0.184-1.257), and 24 h-Ptot with g = 0.731 (95% CI 0.195-1.267). Meta-regression analyses revealed positive relationships between ST-SDNN effect sizes and training frequency ([Formula: see text] = 0.000; [Formula: see text] = 0.000; p = 0.0462). CONCLUSION: This meta-analysis demonstrates a positive effect of endurance-type exercise on autonomic regulation in older adults. However, the selected studies expressed some risks of bias. We conclude that chronic endurance exercise leads to HRV improvements in a linear frequency-response relationship, encouraging the promotion of high-frequency training programmes in older adults. FAU - Raffin, Jeremy AU - Raffin J AUID- ORCID: 0000-0003-1347-9113 AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. jeremy.raffin@live.fr. AD - Loire-Haute Loire Mutualite SSAM, 42100, Saint-Etienne, France. jeremy.raffin@live.fr. AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. jeremy.raffin@live.fr. FAU - Barthelemy, Jean-Claude AU - Barthelemy JC AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. FAU - Dupre, Caroline AU - Dupre C AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - National Centre for Health Examination Prevention, CETAF, 42100, Saint-Etienne, France. FAU - Pichot, Vincent AU - Pichot V AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. FAU - Berger, Mathieu AU - Berger M AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. FAU - Feasson, Leonard AU - Feasson L AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. AD - Univ Lyon, UJM-Saint-Etienne Inter-University Laboratory of Human Movement Biology, EA 7424, 42023, Saint-Etienne, France. FAU - Busso, Thierry AU - Busso T AD - Univ Lyon, UJM-Saint-Etienne Inter-University Laboratory of Human Movement Biology, EA 7424, 42023, Saint-Etienne, France. FAU - Da Costa, Antoine AU - Da Costa A AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - Department of Cardiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. FAU - Colvez, Alain AU - Colvez A AD - National Centre for Health Examination Prevention, CETAF, 42100, Saint-Etienne, France. FAU - Montuy-Coquard, Claude AU - Montuy-Coquard C AD - Loire-Haute Loire Mutualite SSAM, 42100, Saint-Etienne, France. FAU - Bouvier, Remi AU - Bouvier R AD - Loire-Haute Loire Mutualite SSAM, 42100, Saint-Etienne, France. FAU - Bongue, Bienvenu AU - Bongue B AD - National Centre for Health Examination Prevention, CETAF, 42100, Saint-Etienne, France. AD - Chaire Sante des Aines, Univ. Lyon, Saint-Etienne, France. FAU - Roche, Frederic AU - Roche F AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. FAU - Hupin, David AU - Hupin D AD - Univ Lyon, UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, 42023, Saint-Etienne, France. AD - Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, 42055, Saint-Etienne Cedex 2, France. LA - eng PT - Journal Article PT - Meta-Analysis PT - Systematic Review PL - New Zealand TA - Sports Med JT - Sports medicine (Auckland, N.Z.) JID - 8412297 SB - IM MH - Aged MH - Aging MH - *Endurance Training MH - *Heart Rate MH - Humans MH - Randomized Controlled Trials as Topic MH - Regression Analysis EDAT- 2019/04/05 06:00 MHDA- 2020/03/28 06:00 CRDT- 2019/04/05 06:00 PHST- 2019/04/05 06:00 [pubmed] PHST- 2020/03/28 06:00 [medline] PHST- 2019/04/05 06:00 [entrez] AID - 10.1007/s40279-019-01097-7 [pii] AID - 10.1007/s40279-019-01097-7 [doi] PST - ppublish SO - Sports Med. 2019 May;49(5):719-729. doi: 10.1007/s40279-019-01097-7.