Cardiovagal Modulation in Young and Older Male Adults Following Acute
                    Aerobic Exercise

João Luís Marôco; Marco Pinto; Sérgio Laranjo; Helena Santa-Clara; Bo Fernhall; Xavier Melo

doi:10.1055/a-1843-7974

International Journal of Sports Medicine, Table of Contents

Int J Sports Med 2022; 43(11): 931-940
DOI: 10.1055/a-1843-7974

Physiology & Biochemistry

Cardiovagal Modulation in Young and Older Male Adults Following Acute Aerobic Exercise

João Luís Marôco

¹Research & Development Department, GCP Lab, Ginásio Clube Português, Lisboa, Portugal

²Centro Interdisciplinar de Estudo da Performance Humana, Faculdade de Motricidade Humana, Universidade de Lisboa, Oeiras, Portugal

,

Marco Pinto

³Instituto de Formação Avançada, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal

,

Sérgio Laranjo

⁴Instituto de Fisiologia, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal

⁵Centro Cardiovascular, Universidade de Lisboa, Lisboa, Portugal

,

Helena Santa-Clara

⁶Kinesiology, Nutrition, and Rehabilitation, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, United States

,

Bo Fernhall

⁶Kinesiology, Nutrition, and Rehabilitation, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, United States

,

Xavier Melo

¹Research & Development Department, GCP Lab, Ginásio Clube Português, Lisboa, Portugal

²Centro Interdisciplinar de Estudo da Performance Humana, Faculdade de Motricidade Humana, Universidade de Lisboa, Oeiras, Portugal

› Author Affiliations

Abstract

We compared response patterns of cardiovagal modulation through heart-rate variability (HRV) and baroreflex sensitivity (BRS) indices at 10 and 60 min after an acute bout of high-intensity interval exercise (HIIE) and moderate-intensity continuous exercise (MICE) in active young and older adults. Twelve young (aged 20–40 years) and older (aged 57–76 years) healthy and active male adults performed an isocaloric acute bout of HIIE, MICE, or a non-exercise condition in a randomized order. HRV and BRS indices were analyzed offline with R-R intervals obtained from a supine position. HIIE decreased natural logarithm (Ln) standard deviation of NN intervals (d=−0.53; 95% CI: −0.77 to −0.30 ms, p<0.001), Ln-root mean square of successive differences (d=−0.85; 95% CI: −1.09 to −0.61 ms, p<0.001), Ln-high-frequency power (d=−1.60; 95% CI: −2.11 to −1.10 ms²; p<0.001), and BRS (d=−6.28; 95% CI: −8.91 to −3.64 ms/mmHg, p<0.001) after exercise in young and older adults, whereas MICE did not. Indices returned to baseline after 60 min. We found no evidence of age-associated response patterns in HRV or BRS to a single bout HIIE or MICE in active participants. HIIE reduced cardiovagal modulation in active young and older adults, returning to baseline values 60 min into recovery.

Key words

aging - cardiovagal modulation - baroreflex sensitivity - heart rate variability - aerobic acute exercise - exercise intensity

Full Text

References

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Supplementary Material

Supplementary Material