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Dangosydd eitem ddigidol (DOI)

  • Denis J Wakeham
    Cardiff Metropolitan University
  • Tony Dawkins
    Cardiff Metropolitan University
  • Rachel Lord
    Cardiff Metropolitan University
  • Jack Talbot
    Cardiff Metropolitan University
  • Freya Lodge
    Cardiff and Vale University Local Health Board
  • Bryony Curry
    Cardiff Metropolitan University
  • Lydia Simpson
  • Christopher Pugh
    Cardiff Metropolitan University
  • Rob Shave
    University of British Columbia, Okanagan
  • Jonathan Moore

PURPOSE: We determined the effect of habitual endurance exercise and age on aortic pulse wave velocity (aPWV), augmentation pressure (AP) and systolic blood pressure (aSBP), with statistical adjustments of aPWV and AP for heart rate and aortic mean arterial pressure, when appropriate. Furthermore, we assessed whether muscle sympathetic nerve activity (MSNA) correlates with AP in young and middle-aged men.

METHODS: Aortic PWV, AP, aortic blood pressure (applanation tonometry; SphygmoCor) and MSNA (peroneal microneurography) were recorded in 46 normotensive men who were either young or middle-aged and endurance-trained runners or recreationally active nonrunners (10 nonrunners and 13 runners within each age-group). Between-group differences and relationships between variables were assessed via ANOVA/ANCOVA and Pearson product-moment correlation coefficients, respectively.

RESULTS: Adjusted aPWV and adjusted AP were similar between runners and nonrunners in both age groups (all, P > 0.05), but higher with age (all, P < 0.001), with a greater effect size for the age-related difference in AP in runners (Hedges' g, 3.6 vs 2.6). aSBP was lower in young (P = 0.009; g = 2.6), but not middle-aged (P = 0.341; g = 1.1), runners compared to nonrunners. MSNA burst frequency did not correlate with AP in either age group (young: r = 0.00, P = 0.994; middle-aged: r = - 0.11, P = 0.604).

CONCLUSION: There is an age-dependent effect of habitual exercise on aortic haemodynamics, with lower aSBP in young runners compared to nonrunners only. Statistical adjustment of aPWV and AP markedly influenced the outcomes of this study, highlighting the importance of performing these analyses. Further, peripheral sympathetic vasomotor outflow and AP were not correlated in young or middle-aged normotensive men.

Allweddeiriau

Iaith wreiddiolSaesneg
Tudalennau (o-i)801-813
Nifer y tudalennau13
CyfnodolynEuropean Journal of Applied Physiology
Cyfrol122
Rhif y cyfnodolyn3
Dyddiad ar-lein cynnar16 Ion 2022
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - Maw 2022

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