Comparison of Heart Rate Variability Responses to Varying Resistance Exercise Volume-Loads. Issue 2 (3rd April 2022)

• Record Type: Journal Article
• Authors: Holmes, Clifton J.; MacDonald, Hayley V.; Esco, Michael R.; Fedewa, Michael V.; Wind, Stefanie A.; Winchester, Lee J.
• Is Part Of: Research quarterly for exercise and sport. Volume 93:Issue 2(2022)
• Page Start: 391
• Page End: 400
• Publication Date: 2022-04-03
• Subjects: Autonomic modulation -- fatigue -- parasympathetic reactivation -- recovery -- weightlifting; Physical education and training -- Periodicals; Health education -- Periodicals; Recreation -- Periodicals; Physical Education and Training -- Periodicals; Sports -- Periodicals; Exercise -- Periodicals; Education -- Periodicals; Lichamelijke opvoeding; Sport; Exercice -- Périodiques; Sports -- Périodiques; 613.7105
• DOI: 10.1080/02701367.2020.1851351
• Languages: English
• ISSNs: 0270-1367

Abstract

ABSTRACT: Purpose : The aim of this study was to compare the effects of low ([LV]; 4 total sets), moderate ([MV]; 8 total sets), and high set volumes ([HV]; 12 total sets) in acute full-body resistance exercise sessions on post-exercise parasympathetic reactivation measured using RMSSD. Methods : Ten resistance-trained participants (25.8 ± 6.8 yr., 173.4 ± 10.6 cm, 75.4 ± 9.9 kg) performed three resistance exercise sessions. During each session, heart rate variability (HRV) was measured pre- and for 30 min post-exercise, divided into 5-min segments stabilization, Post5-10, Post10-15, Post15-20, Post20-25, and Post25-30 . Repeated-measures ANOVA was used to assess differences within and between pre-post exercise natural logarithm RMSSD (LnRMSSD) values. To assess the initial change in LnRMSSD, the delta percent change (ΔLnRMSSD) from pre-exercise to Post5-10 (ΔLnRMSSDpre-post ) was calculated for each session. The ΔLnRMSSD was also calculated between Post5-10 and Post25-30 (ΔLnRMSSDpost5-30 ) to assess recovery. Results : Significant differences were observed between sessions and when comparing pre-exercise values to all post-exercise times across sessions ( p ≤ .05). The LV session resulted in significantly higher mean LnRMSSD value (3.62) post-exercise compared to both the MV (3.11, effect size [ES] = 3.77) and HV (3.02, ES = 3.92) sessions while the MV and HV sessions produced similar responses. Across sessions no return to baseline occurred and when comparing sessions, no significant differences were found in ΔLnRMSSDpre-post or ΔLnRMSSDpost5-30 . Conclusion : Acute bouts of full-body resistance exercise can cause similar reductions in LnRMSSD from pre-exercise levels and can delay parasympathetic reactivation back to baseline values during the same 30-min recovery period despite differences in set volume.