Cardiac autonomic function reveals adaptation to military training

Huovinen, Jukka; Kyröläinen, Heikki; Linnamo, Vesa; Tanskanen, Minna; Kinnunen, Hannu; Häkkinen, Keijo; Tulppo, Mikko P.

doi:10.1080/17461391.2010.506659

Cited by 8 publications

(6 citation statements)

References 43 publications

(72 reference statements)

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“…Though similar in age and physical characteristics to healthy or athletic adults, military personnel are exposed to unique events and activities that provoke substantial physiological and psychological strain. For example, intense physical training, frequent exposure to mental stress, and periodic conditions of sleep, water, and caloric restriction create unique circumstances that alter resting-state HRV among soldiers [ 19 , 20 , 21 ]. Moreover, HRV has been used to predict the occurrence of post-traumatic stress disorder following combat deployment [ 22 ], as well as to monitor the effects of therapeutic interventions on ANS activity [ 23 ].…”

Section: Introductionsupporting

confidence: 85%

Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees

et al. 2020

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We aimed to (a) evaluate the agreement between ultra-short-term and criterion resting heart rate variability (HRV) measures in military trainees, and (b) compare associations between HRV recording lengths and body composition. HRV recordings were performed for 10 min in 27 military male students. Mean RR interval, the root-mean square of successive differences (RMSSD), RMSSD:RR interval ratio, standard deviation of normal-to-normal RR intervals (SDNN), and SDNN:RR interval ratio were determined from the last 5 min of the 10-min recording and considered the criterion. Parameters were also recorded in successive 1-min epochs from the 5-min stabilization period. No differences were observed between criterion values and any of the 1-min epochs (p > 0.05). Effect sizes ranged from −0.36–0.35. Intra-class correlations ranged from 0.83–0.99. Limits of agreement ranged from 38.3–78.4 ms for RR interval, 18.8–30.0 ms for RMSSD, 1.9–3.1 for RMSSD:RR, 24.1–31.4 ms for SDNN, and 2.5–3.0 for SDNN:RR. Body fat% was associated (p < 0.05) with all HRV parameters at varying time segments. A 1-min HRV recording preceded by a 1-min stabilization period seems to be a suitable alternative to criterion measures. Ultra-short procedures may facilitate routine HRV tracking in tactical populations for status-monitoring purposes.

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Section: Introductionsupporting

confidence: 85%

Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees

et al. 2020

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“…Additionally, other cardiac autonomic indices (i.e., heart rate recovery; HRR, post-exercise) could also be employed as a delayed HRR was reported in individuals with high levels of stress and depression (Gordon et al, 2012 ). Consequently, the simple assessment of HRV and HRR may provide a comprehensive evaluation of the cardiac autonomic health of workers and prognosis for work-related stress and responsiveness to exercise training (Huovinen et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

The role of physical activity and heart rate variability for the control of work related stress

et al. 2014

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Physical activity (PA) and exercise are often used as tools to reduce stress and therefore the risk for developing cardiovascular diseases (CVD). Meanwhile, heart rate variability (HRV) has been utilized to assess both stress and PA or exercise influences. The objective of the present review was to examine the current literature in regards to workplace stress, PA/exercise and HRV to encourage further studies. We considered original articles from known databases (PubMed, ISI Web of Knowledge) over the last 10 years that examined these important factors. A total of seven studies were identified with workplace stress strongly associated with reduced HRV in workers. Longitudinal workplace PA interventions may provide a means to improve worker stress levels and potentially cardiovascular risk with mechanisms still to be clarified. Future studies are recommended to identify the impact of PA, exercise, and fitness on stress levels and HRV in workers and their subsequent influence on cardiovascular health.

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“…The advantage of lower body over whole body CWI is that the former induces less thermal discomfort and consequent intolerance to the recovery procedure. HRV has been recently reported to predict the exercise performance of highly trained young soccer players [ 11 , 13 ] and nonathletes [ 24 ] . Subjects with greater vagal HRV improvements during the training period exhibited greater improvement in aerobic fi tness [ 13 , 24 ] .…”

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confidence: 99%

Effects of Cold Water Immersion and Active Recovery on Post-Exercise Heart Rate Variability

et al. 2012

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The aim of the present study was to investigate the potential benefits of cold water immersion (CWI) and active recovery (AR) on blood lactate concentration ([Lac]) and heart rate variability (HRV) indices following high-intensity exercise. 20 male subjects were recruited. On the first visit, an incremental test was performed to determine maximal oxygen consumption and the associated speed (MAS). The remaining 3 visits for the performance of constant velocity exhaustive tests at MAS and different recovery methods (6 min) were separated by 7-day intervals [randomized: CWI, AR or passive recovery (PR)]. The CWI and AR lowered [Lac] (p<0.05) at 11, 13 and 15 min after exercise cessation in comparison to PR. There was a 'time' and 'recovery mode' interaction for 2 HRV indices: standard deviation of normal R-R intervals (SDNN) (partial eta squared=0.114) and natural log of low-frequency power density (lnLF) (partial eta squared=0.090). CWI presented significantly higher SDNN compared to PR at 15 min of recovery (p<0.05). In addition, greater SDNN values were found in CWI vs. AR during the application of recovery interventions, and at 30 and 75 min post-exercise (p<0.05 for all differences). The lnLF during the recovery interventions and at 75 min post-exercise was greater using CWI compared with AR (p<0.05). For square root of the mean of the sum of the squares of differences between adjacent R-R intervals (RMSSD) and natural log of high-frequency power density (lnHF), a moderate effect size was found between CWI and PR during the recovery interventions and at 15 min post-exercise. Our findings show that AR and CWI offer benefits regarding the removal of [Lac] following high-intensity exercise. While limited, CWI results in some improvement in post-exercise cardiac autonomic regulation compared to AR and PR. Further, AR is not recommended if the aim is to accelerate the parasympathetic reactivation.

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Cardiac autonomic function reveals adaptation to military training

Cited by 8 publications

References 43 publications

Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees

Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees

The role of physical activity and heart rate variability for the control of work related stress

Effects of Cold Water Immersion and Active Recovery on Post-Exercise Heart Rate Variability

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