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Heart rate recovery of individuals undergoing cardiac rehabilitation after acute coronary syndrome / Tiffany Astolfi in Annals of physical and rehabilitation medicine, Vol. 61, n°2 (Mars 2018)
[article]
Titre : Heart rate recovery of individuals undergoing cardiac rehabilitation after acute coronary syndrome Type de document : texte imprimé Auteurs : Tiffany Astolfi ; Fabio Borrani ; Milos Savcic ; Vincent Gremeaux ; Grégoire Millet Année de publication : 2018 Article en page(s) : p. 65-71 Note générale : Doi : 10.1016/j.rehab.2017.10.005 Langues : Anglais (eng) Mots-clés : Autonomic nervous system Heart rate recovery Heart rate variability Cardiac rehabilitation Acute coronary syndrome Résumé : Background
An efficient cardiac rehabilitation programme (CRP) can improve the functional ability of patients after acute coronary syndrome (ACS).
Objective
To examine the effect of a CRP on parasympathetic reactivation and heart rate recovery (HRR) measured after a 6-min walk test (6MWT), and correlation with 6MWT distance and well-being after ACS.
Methods
Eleven normoweight patients after ACS (BMI<25kg/m2; 10 males; mean [SD] age 61 [9] years) underwent an 8-week CRP. Before (pre-) and at weeks 4 (W4) and 8 (W8) during the CRP, they performed a 6MWT on a treadmill, followed by 10-min of seated passive recovery, with HRR and HR variability (HRV) recordings. HRR was measured at 1, 3, 5 and 10min after the 6MWT (HRR1, HRR3, HRR5, HRR10), then modelized by a mono-exponential function. Time-domain (square root of the mean of the sum of the squares of differences between adjacent normal R-R intervals [RMSSD]) and frequency-domain (with high- and low-frequency band powers) were used to analyse HRV. Participants completed a mental and physical well-being questionnaire at pre- and W8. Exhaustion after tests was assessed by the Borg scale. Pearson correlation was used to assess correlations.
Results
HRR3, HRR5 and HRR10 increased by 37%, 36% and 28%, respectively, between pre- and W8 (P<0.05), and were positively correlated with change in 6MWT distance (r=0.58, 0.66 and 0.76; P<0.05). Percentage change in HRR3 was positively correlated with change in well-being (r=0.70; P=0.01). Parasympathic reactivation (RMSSD) was improved only during the first 30sec of recovery (P=0.04).
Conclusion
Among patients undergoing a CRP after ACS, increased HRR after a 6MWT, especially at 3min, was positively correlated with 6MWT distance and improved well-being. HRR raw data seem more sensitive than post-exercise HRV analysis for monitoring functional and autonomic improvement after ACS.Permalink : ./index.php?lvl=notice_display&id=80448
in Annals of physical and rehabilitation medicine > Vol. 61, n°2 (Mars 2018) . - p. 65-71[article] Heart rate recovery of individuals undergoing cardiac rehabilitation after acute coronary syndrome [texte imprimé] / Tiffany Astolfi ; Fabio Borrani ; Milos Savcic ; Vincent Gremeaux ; Grégoire Millet . - 2018 . - p. 65-71.
Doi : 10.1016/j.rehab.2017.10.005
Langues : Anglais (eng)
in Annals of physical and rehabilitation medicine > Vol. 61, n°2 (Mars 2018) . - p. 65-71
Mots-clés : Autonomic nervous system Heart rate recovery Heart rate variability Cardiac rehabilitation Acute coronary syndrome Résumé : Background
An efficient cardiac rehabilitation programme (CRP) can improve the functional ability of patients after acute coronary syndrome (ACS).
Objective
To examine the effect of a CRP on parasympathetic reactivation and heart rate recovery (HRR) measured after a 6-min walk test (6MWT), and correlation with 6MWT distance and well-being after ACS.
Methods
Eleven normoweight patients after ACS (BMI<25kg/m2; 10 males; mean [SD] age 61 [9] years) underwent an 8-week CRP. Before (pre-) and at weeks 4 (W4) and 8 (W8) during the CRP, they performed a 6MWT on a treadmill, followed by 10-min of seated passive recovery, with HRR and HR variability (HRV) recordings. HRR was measured at 1, 3, 5 and 10min after the 6MWT (HRR1, HRR3, HRR5, HRR10), then modelized by a mono-exponential function. Time-domain (square root of the mean of the sum of the squares of differences between adjacent normal R-R intervals [RMSSD]) and frequency-domain (with high- and low-frequency band powers) were used to analyse HRV. Participants completed a mental and physical well-being questionnaire at pre- and W8. Exhaustion after tests was assessed by the Borg scale. Pearson correlation was used to assess correlations.
Results
HRR3, HRR5 and HRR10 increased by 37%, 36% and 28%, respectively, between pre- and W8 (P<0.05), and were positively correlated with change in 6MWT distance (r=0.58, 0.66 and 0.76; P<0.05). Percentage change in HRR3 was positively correlated with change in well-being (r=0.70; P=0.01). Parasympathic reactivation (RMSSD) was improved only during the first 30sec of recovery (P=0.04).
Conclusion
Among patients undergoing a CRP after ACS, increased HRR after a 6MWT, especially at 3min, was positively correlated with 6MWT distance and improved well-being. HRR raw data seem more sensitive than post-exercise HRV analysis for monitoring functional and autonomic improvement after ACS.Permalink : ./index.php?lvl=notice_display&id=80448 Exemplaires (1)
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