Evidence of Parasympathetic Hyperactivity in Functionally Overreached Athletes

Meur, Yann Le; Pichon, Aurélien; Schaal, Karine; Schmitt, Laurent; Louis, Julien; Guéneron, Jacques; Vidal, Pierre Paul; Hausswirth, Christophe

doi:10.1249/mss.0b013e3182980125

Cited by 175 publications

(219 citation statements)

References 47 publications

Supporting

Mentioning

199

Contrasting

Unclassified

Order By: Relevance

“…45 Indeed, HRex during intensified training intensities showed significant reductions in overreached triathletes. Le Meur et al 46,47 suggested the cause of this reduction in heart rate to be a hyperactivation of the parasympathetic nervous system via central, cardiac, and/or periphery mechanisms. In contrast to Le Meur et al, 46,47 the results of the current study suggest, although, speculative, an acute stimulation of the sympathetic nervous system thus increasing HRex after a short continued period of training.…”

Section: Discussionmentioning

confidence: 99%

“…Le Meur et al 46,47 suggested the cause of this reduction in heart rate to be a hyperactivation of the parasympathetic nervous system via central, cardiac, and/or periphery mechanisms. In contrast to Le Meur et al, 46,47 the results of the current study suggest, although, speculative, an acute stimulation of the sympathetic nervous system thus increasing HRex after a short continued period of training. Indeed, in both recreational marathon runners and world-class rowers, a significant increase in sympathetic dominance following a training block in the lead up to competition has been observed.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of Changes in Acute Training Load on Daily Sensitivity of Morning-Measured Fatigue Variables in Elite Soccer Players

Thorpe¹,

Strudwick²,

Buchheit³

et al. 2017

International Journal of Sports Physiology and Performance

106

View full text Add to dashboard Cite

Purpose:To determine the sensitivity of a range of potential fatigue measures to daily training load accumulated over the previous 2, 3, and 4 d during a short in-season competitive period in elite senior soccer players (N = 10). Methods: Total highspeed-running distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), countermovement-jump height (CMJ), submaximal heart rate (HRex), postexercise heart-rate recovery (HRR), and heart-rate variability (HRV: Ln rMSSD) were analyzed during an in-season competitive period (17 d). General linear models were used to evaluate the influence of 2-, 3-, and 4-d total high-speed-running-distance accumulation on fatigue measures. Results: Fluctuations in perceived ratings of fatigue were correlated with fluctuations in total high-speed-running-distance accumulation covered on the previous 2 d (r = -.31; small), 3 d (r = -.42; moderate), and 4 d (r = -.28; small) (P < .05). Changes in HRex (r = .28; small; P = .02) were correlated with changes in 4-d total high-speed-running-distance accumulation only. Correlations between variability in muscle soreness, sleep quality, CMJ, HRR%, and HRV and total high-speed-running distance were negligible and not statistically significant for all accumulation training loads. Conclusions: Perceived ratings of fatigue and HRex were sensitive to fluctuations in acute total high-speed-running-distance accumulation, although sensitivity was not systematically influenced by the number of previous days over which the training load was accumulated. The present findings indicate that the sensitivity of morning-measured fatigue variables to changes in training load is generally not improved when compared with training loads beyond the previous day's training. Keywords: training, performance, wellness, recoveryThe locomotor demands of elite soccer have progressively increased in recent years. 1,2 Since leading teams are also required to compete in a high number of matches over the course of season, 3 implementation of effective recovery strategies are paramount to avoid the debilitating effects associated with overtraining and injury. 4 Increasing attention in the literature has therefore focused on evaluating the effectiveness of a range of monitoring tools that may serve as valid indicators of fatigue status of athletes. 5 For the purpose of this manuscript, fatigue will be defined as an inability to complete a task that was once achievable within a recent time frame. 6 Recent research has examined the sensitivity of potential measures of fatigue to daily fluctuations in training load in Australian Rules Football (AFL). 7,8 In AFL players, perceived ratings of wellness, 7,8 submaximal heart rate (HRex), 7 and an index (LnSD1) of vagal-related heart-rate variability (HRV) 7 were sensitive to the fluctuations in daily training load during a preseason training period. Similarly, in elite soccer players competing in the English Premier League (EPL), 9 both rating of perceived fatigue and vagal related HRV measure Ln rMSSD were mo...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Influence of Changes in Acute Training Load on Daily Sensitivity of Morning-Measured Fatigue Variables in Elite Soccer Players

Thorpe¹,

Strudwick²,

Buchheit³

et al. 2017

International Journal of Sports Physiology and Performance

106

View full text Add to dashboard Cite

show abstract

“…Heart rate during intensified training and during varying intensities showed significant reductions in overreached triathletes. Le Meur et al 28,30,31 suggested a hyperactivation of the parasympathetic nervous system via central, cardiac and/ or periphery mechanisms. Recent observations in AFL have also reported reductions in heart rate in response to training during preseason, although, the authors concluded this was more possibly due to the effects of training/environmental induced changes in plasma volume than acute changes in fitness or fatigue.…”

Section: Submaximal Heart Ratementioning

confidence: 99%

Monitoring Fatigue Status in Elite Team-Sport Athletes: Implications for Practice

Thorpe¹,

Atkinson²,

Drust³

et al. 2017

International Journal of Sports Physiology and Performance

229

View full text Add to dashboard Cite

The increase in competition demands in elite team sports over recent years has prompted much attention from researchers and practitioners to the monitoring of adaptation and fatigue in athletes. Monitoring fatigue and gaining an understanding of athlete status may also provide insights and beneficial information pertaining to player availability, injury, and illness risk. Traditional methods used to quantify recovery and fatigue in team sports, such as maximal physical-performance assessments, may not be feasible to detect variations in fatigue status throughout competitive periods. Faster, simpler, and nonexhaustive tests such as athlete self-report measures, autonomic nervous system response via heart-rate-derived indices, and to a lesser extent, jump protocols may serve as promising tools to quantify and establish fatigue status in elite team-sport athletes. The robust rationalization and precise detection of a meaningful fluctuation in these measures are of paramount importance for practitioners working alongside athletes and coaches on a daily basis. There are various methods for arriving at a minimal clinically important difference, but these have been rarely adopted by sport scientists and practitioners. The implementation of appropriate, reliable, and sensitive measures of fatigue can provide important information to key stakeholders in team-sport environments. Future research is required to investigate the sensitivity of these tools to fundamental indicators such as performance, injury, and illness.Keywords: training, performance, wellness, recovery, injury, illness Elite team-sport athletes, particularly those in the professional football codes, are exposed to high competition loads, particularly in recent years. These high loads reflect a number of factors, including an increased frequency of domestic competitions, particularly for higher-level athletes, as well as a higher intensity of competition due to enhanced player preparation strategies. 1 Higher loads may also result from the increased demands of international competition during both the domestic season and the off-season period.An increased availability of athletes for selection, as a result of a reduction in injuries, substantially increases a team's chance of success. 2 Therefore, injury prevention strategies are fundamental to the work of the athlete's support team. Routine modifications in training load (frequency, duration, intensity) occur during the training cycle and these subsequently increase or decrease fatigue. Management of fatigue is important in mediating adaption to training and ensuring the athlete is prepared for competition, 3 as well as for reducing the athletes' susceptibility to nonfunctional overreaching, injury, and illness. 4 The importance of managing athlete fatigue has led to an increase in interest in monitoring athlete loads, particularly in terms of the measures which may offer insights into whether the athlete is adapting positively or negatively to the collective stresses of training and competition. In the pr...

show abstract

“…Особенностью физиче-ской реабилитации у больных является исходно не-высокое функциональное состояние, поэтому при неадекватных нагрузках у них также могут возни-кать признаки перегрузки, проявляющиеся сниже-нием толерантности при повторных нагрузочных тестах [9]. Поскольку сдвиг вегетативного баланса в сторону симпатической активации может быть од-ним из ранних признаков неадекватности ФТ [10], то будет логичным использовать данный подход для контроля эффективности реабилитационных меро-приятий у пациентов [7,[11][12][13]. В этих целях при-меняется оценка вариабельности ритма сердца (ВРС) как при суточном мониторировании электро-кардиографии (ЭКГ) [9], так и на коротких участках записи [12], однако широкого практического при-менения данные методики не находят.…”

Section: сведения об авторахunclassified

The results of rehabilitation of the patients presenting with arterial hypertension: the types of adaptation, the vegetative status, and intracardial hemodynamics

Sumin

Ov²,

Og³

2016

Vopr. kurortol. fizioter. lech. fiz. kul't.

View full text Add to dashboard Cite

1 ФГБНУ «Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний», Кемерово, Россия; 2 ФБУ Центр реабилитации фонда социального страхования Российской Федерации «Топаз», Мыски, Россия Цель -изучить изменение типов адаптации в ходе санаторной реабилитации у пациентов с артериальной гипертензи-ей. Пациенты и методы. В исследование были включены 50 пациентов с гипертонической болезнью, проходивших курс санаторной реабилитации, средний возраст составил 58,0 (54,0-62,0) года. Всем исследуемым были проведены элек-трокардиография и эхокардиография с оценкой систолической и диастолической функций левого желудочка. Кардио-интервалография с помощью диагностической системы ORTO Еxpert проводилась в покое и во время активной ортоста-тической пробы (АОП), оценивались типы адаптации. В зависимости от результатов повторной АОП после курса реа-билитации пациенты были разделены на 2 группы. В 1-ю группу вошли больные с улучшением (n=24), во 2-ю -без улучшения (n=26) уровня адаптации. Результаты. Структурные показатели эхокардиографии у исследуемых обеих групп не имели существенных различий. В 1-й группе наблюдалось значительное увеличение числа больных с удовлетвори-тельным уровнем адаптации и ее напряжением при отсутствии срыва адаптации. Во 2-й группе имело место значимое снижение следующих показателей АОП: индекса напряжения регуляторных систем (р=0,02), стандартного отклонения NN-интервалов (p=0,03) и квадратного корня из суммы квадратов разности величин последовательных пар NN-интервалов (р=0,02). При проведении множественной логистической регрессии факторами, ассоциированными с по-ложительным эффектом реабилитации, были нормальная и невысокая степень напряжения регуляторных систем (р=0,01) и исходно адекватная или сниженная реакция на ортопробу (р=0,04). Заключение. После курса санаторной реабилитации улучшение адаптации было отмечено у 48% пациентов. При отсутствии динамики или ухудшении адапта-ции наблюдалось повышение симпатической активности как в покое, так и в ответ на АОП. С положительным эффектом реабилитации были ассоциированы исходно нормальная и невысокая степень напряжения регуляторных систем, а так-же исходно адекватная или сниженная реакция на АОП. Aim. The objective the present work was to study the changes of the types of adaptation in the patients presenting with arterial hypertension under the influence of the spa and health resort-based rehabilitative treatment. Patients and Methods. The study included 50 patients with essential hypertension at the age from 54.0 to 62.0 (mean 58.0) years given a course of the spa and health resort-based rehabilitative treatment. All the patients underwent electrocardiographic and echocardiographic examination for the assessment of the systolic and diastolic left ventricular functions. Cardiointervalography with the use of the ORTO Expert diagnostic system was performed in the patients at rest and during the active orthostatic test (AOT); the types of the adaptation were evaluated. The patients were divided into 2 groups depending on the resu...

show abstract

Evidence of Parasympathetic Hyperactivity in Functionally Overreached Athletes

Cited by 175 publications

References 47 publications

The Influence of Changes in Acute Training Load on Daily Sensitivity of Morning-Measured Fatigue Variables in Elite Soccer Players

The Influence of Changes in Acute Training Load on Daily Sensitivity of Morning-Measured Fatigue Variables in Elite Soccer Players

Monitoring Fatigue Status in Elite Team-Sport Athletes: Implications for Practice

The results of rehabilitation of the patients presenting with arterial hypertension: the types of adaptation, the vegetative status, and intracardial hemodynamics

Contact Info

Product

Resources

About