Effects of Additional Repeated Sprint Training During Preseason on Performance, Heart Rate Variability, and Stress Symptoms in Futsal Players

Purpose: Repeated-sprint training (RS) is commonly conducted in normoxia, but its completion with localized (blood-flow restriction [BFR]) or systemic hypoxia has been proven effective for performance enhancement. Yet, few studies have applied these types of RS sessions in racket sports. The authors aimed to determine the acute responses to these types of training in elite badminton players. Methods: Eight male elite badminton players participated in this randomized crossover study. They performed 3 on-court RS sessions, each consisting of 3 sets of 10 repetitions of 10-s badminton-specific movements in normoxia (RSN), systemic normobaric hypoxia (RSH, FiO2 = 14%), or with BFR (RS-BFR, 40% arterial occlusion pressure). Performance, perceptual (ie, rating of perceived exertion), and physiological (ie, pulse saturation, muscle oxygenation, blood lactate, creatine kinase, heart-rate variability) responses were measured after each set and up to 48 h postsession. Results: RS-BFR induced a greater performance impairment (lower distance and accelerations) and a higher local perceived exertion in the legs than RSN and RSH (P < .05), whereas greater overall fatigue was reported with RSH (P < .05). RSH induced a lower saturation (P < .001), but no differences were observed in muscle oxygenation between conditions. No differences in creatine kinase or heart-rate variability were observed at any time point (from baseline up to 48 h after the session). Conclusions: RS-BFR—and, to a lower extent, RSH—resulted in impaired performance and a higher perceived strain than RSN. However, these 2 hypoxic methods do not seem to induce a long-lasting (post 24–48 h) physiological stress in elite badminton players.

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Pilot Study of a Single Session Heart Rate Variability Biofeedback Intervention on Veterans’ Posttraumatic Stress Symptoms

Applied Psychophysiology and Biofeedback ◽

10.1007/s10484-018-9415-3 ◽

2018 ◽

Vol 44 (1) ◽

pp. 9-20 ◽

Cited By ~ 4

Author(s):

Donna L. Schuman ◽

Michael O. Killian

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Pilot Study ◽

Posttraumatic Stress ◽

Posttraumatic Stress Symptoms ◽

Single Session ◽

Heart Rate Variability Biofeedback ◽

Stress Symptoms

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PS263. Association between Heart Rate Variability (HRV) and posttraumatic stress symptoms in female victims of sexual violence

The International Journal of Neuropsychopharmacology ◽

10.1093/ijnp/pyw043.263 ◽

2016 ◽

Vol 19 (Suppl_1) ◽

pp. 95-95 ◽

Cited By ~ 1

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Sexual Violence ◽

Posttraumatic Stress ◽

Posttraumatic Stress Symptoms ◽

Female Victims ◽

Stress Symptoms

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The effect of heart rate variability biofeedback training on stress and anxiety: a meta-analysis

Psychological Medicine ◽

10.1017/s0033291717001003 ◽

2017 ◽

Vol 47 (15) ◽

pp. 2578-2586 ◽

Cited By ~ 88

Author(s):

V. C. Goessl ◽

J. E. Curtiss ◽

S. G. Hofmann

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Meta Analysis ◽

Wearable Devices ◽

Biofeedback Training ◽

Cochrane Library ◽

Heart Rate Variability Biofeedback ◽

Stress Symptoms ◽

The Cochrane Library ◽

Study Bias

BackgroundSome evidence suggests that heart rate variability (HRV) biofeedback might be an effective way to treat anxiety and stress symptoms. To examine the effect of HRV biofeedback on symptoms of anxiety and stress, we conducted a meta-analysis of studies extracted from PubMed, PsycINFO and the Cochrane Library.MethodsThe search identified 24 studies totaling 484 participants who received HRV biofeedback training for stress and anxiety. We conducted a random-effects meta-analysis.ResultsThe pre-post within-group effect size (Hedges' g) was 0.81. The between-groups analysis comparing biofeedback to a control condition yielded Hedges' g = 0.83. Moderator analyses revealed that treatment efficacy was not moderated by study year, risk of study bias, percentage of females, number of sessions, or presence of an anxiety disorder.ConclusionsHRV biofeedback training is associated with a large reduction in self-reported stress and anxiety. Although more well-controlled studies are needed, this intervention offers a promising approach for treating stress and anxiety with wearable devices.

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