Initial Weekly HRV Response is Related to the Prospective Change in VO2max in Female Soccer Players

Esco, Michael R.; Flatt, Andrew A.; Nakamura, Fábio Yuzo

doi:10.1055/s-0035-1569342

Cited by 35 publications

(36 citation statements)

References 30 publications

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“…For example, participants completing cancer treatment more recently may experience greater variability and therefore using an isolated daily HRV measurement as in the present study may have confounded the results. Therefore, future research investigating the effects of exercise training on HRV among cancer survivors may complete more robust HRV analyses including weekly coefficients of variation as performed in athlete monitoring investigations 37 to account for the high variability in recent cancer survivors.…”

Section: Discussionmentioning

confidence: 99%

Heart Rate Variability and Cardiovascular Adaptations Among Cancer-Survivors Following a 26-Week Exercise Intervention

et al. 2020

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Cardiotoxicity as a result of cancer treatment contributes to autonomic dysfunction and decreased cardiorespiratory fitness among cancer survivors. These deleterious cardiovascular outcomes reduce the survival prognosis for cancer patients and contribute to poor quality of life among survivors. Exercise interventions have been shown as effective in mitigating treatment-related side effects. However, previously published interventions have not explored the potential for improvement in autonomic dysfunction (heart rate variability, HRV). This study examined cardiovascular adaptations in cancer survivors (n = 76) who participated in a 26-week intervention consisting of combined aerobic and resistance training (CART). The most noteworthy improvements occurred during the first 13 weeks of training and were maintained throughout the end of the 26-week period. HRrest improved from baseline (PRE) to the midpoint (MID) ( P = .036) and from PRE to POST timepoints ( P = .029). HRV and VO2max did not initially appear to change in response to CART. However, after stratification on time since treatment, participants who were 5 or more years from their last treatment experienced improvements (ie increase) in the HRV characteristic of HF power ( P = .050) and also in VO2max ( P =.043), when compared to those experiencing less than 5 years of time since their last treatment. These findings highlight a need for more attention to address the cardiorespiratory deficits experienced by those who have recently completed cancer treatment. In conclusion, the CART intervention is effective in improving cardiorespiratory fitness and autonomic dysfunction. The structure of the intervention is feasible for cancer survivors to continue with at home, using minimal resources, and without supervision. This at-home model may be even more acceptable to recent survivors that may be homebound immediately following treatment.

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Section: Discussionmentioning

confidence: 99%

Heart Rate Variability and Cardiovascular Adaptations Among Cancer-Survivors Following a 26-Week Exercise Intervention

et al. 2020

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“…Secondly, Flatt & Esco [ 24 ] performed the RR recordings in a laboratory with controlled settings (quiet, dimly lit, controlled temperature and humidity) which are prerequisites for obtaining a valid HRV analysis [ 35 ]. However, regular HRV analysis in athletes is often performed at home for logistical reasons and we followed the RR recording procedure used in other recent studies [ 5 , 6 , 8 , 13 ]. Based on the current authors’ experience, RR recordings performed at home may not be as well standardized as those performed in laboratory environment.…”

Section: Discussionmentioning

confidence: 99%

“…However, the 30 s required to stabilize the HR was not sufficient to stabilize the Ln RMSSD. For example, the ithlete mobile HRV application uses an algorithm to start recording Ln RMSSD based on detecting a stable HR [ 5 ]. It is questionable whether this is an accurate approach, because the present study showed that HR stabilizes earlier than Ln RMSSD.…”

Section: Discussionmentioning

confidence: 99%

“…Various stabilization periods have been used in the literature: 0 min [ 10 , 11 ], 1 min [ 6 , 9 ], 2 min [ 7 ], 3 min [ 3 ], 4 min [ 8 ], and 5 min [ 4 ]. Alternatively, the stabilization period was automatically selected based on stable heart rate (HR) detection [ 5 ]. It is clear that the stabilization period is not sufficiently standardized in sports science literature.…”

Section: Introductionmentioning

confidence: 99%

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Stabilization period before capturing an ultra-short vagal index can be shortened to 60 s in endurance athletes and to 90 s in university students

2018

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PurposeTo find the shortest, acceptable stabilization period before recording resting, supine ultra-short-term Ln RMSSD and heart rate (HR).MethodThirty endurance-trained male athletes (age 24.1 ± 2.3 years, maximal oxygen consumption (VO2max) 64.1 ± 6.6 ml·kg-1·min-1) and 30 male students (age 23.3 ± 1.8 years, VO2max 52.8 ± 5.1 ml·kg-1·min-1) were recruited. Upon awaking at home, resting, supine RR intervals were measured continuously for 10 min using a Polar V800 HR monitor. Ultra-short-term Ln RMSSD and HR values were calculated from 1-min RR interval segments after stabilization periods from 0 to 4 min in 0.5 min increments and were compared with reference values calculated from 5-min segment after 5-min stabilization. Systematic bias and intraclass correlation coefficients (ICC) including 90% confidence intervals (CI) were calculated and magnitude based inference was conducted.ResultsThe stabilization periods of up to 30 s for athletes and up to 60 s for students showed positive (possibly to most likely) biases for ultra-short-term Ln RMSSD compared with reference values. Stabilization periods of 60 s for athletes and 90 s for students showed trivial biases and ICCs were 0.84; 90% CI 0.72 to 0.91, and 0.88; 0.79 to 0.94, respectively. For HR, biases were trivial and ICCs were 0.93; 0.88 to 0.96, and 0.93; 0.88 to 0.96, respectively.ConclusionThe shortest stabilization period required to stabilize Ln RMSSD and HR was set at 60 s for endurance-trained athletes and 90 s for university students.

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“…The week-to-week responses in RMSSD MEAN may be mostly related to longitudinal changes in aerobic fitness rather than improvements in muscular performance by long-term resistance training [32,33,34,35,36]. For instance, Esco et al showed that the initial change in RMSSD MEAN from weeks 1 to 3 of an 11-week conditioning program was strongly related to the adaptation of maximal oxygen consumption in female soccer player [37]. Though maximal oxygen consumption was not accounted for in the case study, future research should analyze the impact of aerobic fitness on muscle performance recovery and HRV responses in resistance trained athletes.…”

Section: Discussionmentioning

confidence: 99%

Heart Rate Variability Responses to an Undulating Resistance Training Program in Free-Living Conditions: A Case Study in a Collegiate Athlete

Holmes

Wind

Esco

2018

Sports

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The purpose of this case study was to evaluate the response in heart rate variability via the parasympathetically-mediated metric of the log-transformed root mean square of successive R-R interval differences (lnRMSSD) to weekly variations in total volume-load (TVL) during an 18-week periodized strength training program in a competitive collegiate hockey athlete. The program consisted of three 60–90 min full-body exercise sessions per week with at least 24-h of rest between each session. Daily lnRMSSD measurements were taken immediately after waking using a validated smartphone application and the pulse-wave finger sensor. The weekly lnRMSSD values were calculated as the mean (lnRMSSDMEAN) and the coefficient of variation (lnRMSSDCV). A Pearson’s bivariate correlation of lnRMSSDMEAN and TVL revealed no statistically significant correlation between the two variables; TVL (r = −0.105, p = 0.678). However, significant correlations were found between lnRMSSDCV and both total load (TL) (r = −0.591, p = 0.013) and total volume (TV) (r = 0.765, p < 0.001). Additionally, weekly ratings of perceived exertion (RPE) mean values were statistically significantly correlated to TVL, r = 0.853, p < 0.001. It was concluded that lnRMSSDCV increased or decreased proportionally to an increase or decrease in TVL during the periodized resistance training program with TV being the strongest, independent indicator of these changes.

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Initial Weekly HRV Response is Related to the Prospective Change in VO2max in Female Soccer Players

Cited by 35 publications

References 30 publications

Heart Rate Variability and Cardiovascular Adaptations Among Cancer-Survivors Following a 26-Week Exercise Intervention

Heart Rate Variability and Cardiovascular Adaptations Among Cancer-Survivors Following a 26-Week Exercise Intervention

Stabilization period before capturing an ultra-short vagal index can be shortened to 60 s in endurance athletes and to 90 s in university students

Heart Rate Variability Responses to an Undulating Resistance Training Program in Free-Living Conditions: A Case Study in a Collegiate Athlete

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