Autonomic cardiac regulation, blood pressure and cardiorespiratory fitness responses to different training doses over a 12 week group program in the elderly

Andrew MCKUNE, B Peters, S Ramklass, H Van Heerden, C Roberts, Jakub Krejci, Michal Botek

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    Abstract

    Aim The study assessed the effects of different weekly training frequencies performed over a 12 week exercise programme (strength, endurance, balance) on autonomic cardiac activity, blood pressure and cardiorespiratory fitness (CRF) in elderly individuals. Methods Fifty-eight individuals participated in the study: 2TG (N = 24, 71.1 ± 6.4 yrs; 19 females, 5 males) performing two, 60 min sessions/week; and 3TG (N = 34, 72.3 ± 7.9 yrs; 25 females, 9 males) performing three, 60 min sessions/week. Time domain and spectral analysis of heart rate variability (HRV) quantified autonomic cardiac regulation. Results Natural logarithm (Ln) transformation was applied to all HRV parameters. There were significant reductions in total power (Ln TP) (p = 0.006), low frequency (Ln LF) (p = 0.013), high frequency (Ln HF) (p = 0.013) and root mean square of successive differences (Ln rMSSD) (p = 0.014) post training in 3TG after intervention. Diastolic BP (DBP) decreased significantly in both groups (2TG: P <0.001; 3TG: P <0.001). Both groups showed significant improvements in six-minute walk distance (2TG: P = 0.003, 3TG: P = 0.001). However, there were significant HRV differences between 2TG and 3TG for Ln TP (P = 0.018), Ln LF (P = 0.049), Ln HF (P = 0.039) and Ln rMSSD (P = 0.049). Conclusions A combined exercise programme resulted in improved DBP and CRF irrespective of training two or three 60 min sessions/week. However, training three, sessions/week induced negative health-related changes in autonomic cardiac activity through reducing HRV parasympathetic function, while HRV was maintained in the group training twice a week.
    Original languageEnglish
    Pages (from-to)130-135
    Number of pages6
    JournalArchives of Gerontology and Geriatrics
    Volume70
    DOIs
    Publication statusPublished - 2017

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    fitness
    Heart Rate
    Blood Pressure
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    Group
    Exercise
    endurance
    Cardiorespiratory Fitness
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    health

    Cite this

    @article{aa28d4abab584472936ce3f5d85aea24,
    title = "Autonomic cardiac regulation, blood pressure and cardiorespiratory fitness responses to different training doses over a 12 week group program in the elderly",
    abstract = "Aim The study assessed the effects of different weekly training frequencies performed over a 12 week exercise programme (strength, endurance, balance) on autonomic cardiac activity, blood pressure and cardiorespiratory fitness (CRF) in elderly individuals. Methods Fifty-eight individuals participated in the study: 2TG (N = 24, 71.1 ± 6.4 yrs; 19 females, 5 males) performing two, 60 min sessions/week; and 3TG (N = 34, 72.3 ± 7.9 yrs; 25 females, 9 males) performing three, 60 min sessions/week. Time domain and spectral analysis of heart rate variability (HRV) quantified autonomic cardiac regulation. Results Natural logarithm (Ln) transformation was applied to all HRV parameters. There were significant reductions in total power (Ln TP) (p = 0.006), low frequency (Ln LF) (p = 0.013), high frequency (Ln HF) (p = 0.013) and root mean square of successive differences (Ln rMSSD) (p = 0.014) post training in 3TG after intervention. Diastolic BP (DBP) decreased significantly in both groups (2TG: P <0.001; 3TG: P <0.001). Both groups showed significant improvements in six-minute walk distance (2TG: P = 0.003, 3TG: P = 0.001). However, there were significant HRV differences between 2TG and 3TG for Ln TP (P = 0.018), Ln LF (P = 0.049), Ln HF (P = 0.039) and Ln rMSSD (P = 0.049). Conclusions A combined exercise programme resulted in improved DBP and CRF irrespective of training two or three 60 min sessions/week. However, training three, sessions/week induced negative health-related changes in autonomic cardiac activity through reducing HRV parasympathetic function, while HRV was maintained in the group training twice a week.",
    keywords = "Heart rate variability, Fatigue, Training frequency, Aging, Aerobic fitness",
    author = "Andrew MCKUNE and B Peters and S Ramklass and {Van Heerden}, H and C Roberts and Jakub Krejci and Michal Botek",
    year = "2017",
    doi = "10.1016/j.archger.2017.01.012",
    language = "English",
    volume = "70",
    pages = "130--135",
    journal = "Archives of Gerontology and Geriatrics",
    issn = "0167-4943",
    publisher = "Elsevier Ireland Ltd",

    }

    Autonomic cardiac regulation, blood pressure and cardiorespiratory fitness responses to different training doses over a 12 week group program in the elderly. / MCKUNE, Andrew; Peters, B; Ramklass, S; Van Heerden, H; Roberts, C; Krejci, Jakub; Botek, Michal.

    In: Archives of Gerontology and Geriatrics, Vol. 70, 2017, p. 130-135.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Autonomic cardiac regulation, blood pressure and cardiorespiratory fitness responses to different training doses over a 12 week group program in the elderly

    AU - MCKUNE, Andrew

    AU - Peters, B

    AU - Ramklass, S

    AU - Van Heerden, H

    AU - Roberts, C

    AU - Krejci, Jakub

    AU - Botek, Michal

    PY - 2017

    Y1 - 2017

    N2 - Aim The study assessed the effects of different weekly training frequencies performed over a 12 week exercise programme (strength, endurance, balance) on autonomic cardiac activity, blood pressure and cardiorespiratory fitness (CRF) in elderly individuals. Methods Fifty-eight individuals participated in the study: 2TG (N = 24, 71.1 ± 6.4 yrs; 19 females, 5 males) performing two, 60 min sessions/week; and 3TG (N = 34, 72.3 ± 7.9 yrs; 25 females, 9 males) performing three, 60 min sessions/week. Time domain and spectral analysis of heart rate variability (HRV) quantified autonomic cardiac regulation. Results Natural logarithm (Ln) transformation was applied to all HRV parameters. There were significant reductions in total power (Ln TP) (p = 0.006), low frequency (Ln LF) (p = 0.013), high frequency (Ln HF) (p = 0.013) and root mean square of successive differences (Ln rMSSD) (p = 0.014) post training in 3TG after intervention. Diastolic BP (DBP) decreased significantly in both groups (2TG: P <0.001; 3TG: P <0.001). Both groups showed significant improvements in six-minute walk distance (2TG: P = 0.003, 3TG: P = 0.001). However, there were significant HRV differences between 2TG and 3TG for Ln TP (P = 0.018), Ln LF (P = 0.049), Ln HF (P = 0.039) and Ln rMSSD (P = 0.049). Conclusions A combined exercise programme resulted in improved DBP and CRF irrespective of training two or three 60 min sessions/week. However, training three, sessions/week induced negative health-related changes in autonomic cardiac activity through reducing HRV parasympathetic function, while HRV was maintained in the group training twice a week.

    AB - Aim The study assessed the effects of different weekly training frequencies performed over a 12 week exercise programme (strength, endurance, balance) on autonomic cardiac activity, blood pressure and cardiorespiratory fitness (CRF) in elderly individuals. Methods Fifty-eight individuals participated in the study: 2TG (N = 24, 71.1 ± 6.4 yrs; 19 females, 5 males) performing two, 60 min sessions/week; and 3TG (N = 34, 72.3 ± 7.9 yrs; 25 females, 9 males) performing three, 60 min sessions/week. Time domain and spectral analysis of heart rate variability (HRV) quantified autonomic cardiac regulation. Results Natural logarithm (Ln) transformation was applied to all HRV parameters. There were significant reductions in total power (Ln TP) (p = 0.006), low frequency (Ln LF) (p = 0.013), high frequency (Ln HF) (p = 0.013) and root mean square of successive differences (Ln rMSSD) (p = 0.014) post training in 3TG after intervention. Diastolic BP (DBP) decreased significantly in both groups (2TG: P <0.001; 3TG: P <0.001). Both groups showed significant improvements in six-minute walk distance (2TG: P = 0.003, 3TG: P = 0.001). However, there were significant HRV differences between 2TG and 3TG for Ln TP (P = 0.018), Ln LF (P = 0.049), Ln HF (P = 0.039) and Ln rMSSD (P = 0.049). Conclusions A combined exercise programme resulted in improved DBP and CRF irrespective of training two or three 60 min sessions/week. However, training three, sessions/week induced negative health-related changes in autonomic cardiac activity through reducing HRV parasympathetic function, while HRV was maintained in the group training twice a week.

    KW - Heart rate variability

    KW - Fatigue

    KW - Training frequency

    KW - Aging

    KW - Aerobic fitness

    U2 - 10.1016/j.archger.2017.01.012

    DO - 10.1016/j.archger.2017.01.012

    M3 - Article

    VL - 70

    SP - 130

    EP - 135

    JO - Archives of Gerontology and Geriatrics

    JF - Archives of Gerontology and Geriatrics

    SN - 0167-4943

    ER -