Christophe Hausswirth

Christophe Hausswirth
French Institute of Sport (INSEP) | INSEP

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213
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Publications

Publications (213)
Article
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The purpose of this study was to examine the effectiveness of a neuro-meditation program to support nurses during the COVID-19 pandemic. Forty-five (10 men and 35 women) nurses were classified into three groups based on their systolic blood pressure: normotensive (G-nor; n = 16, 43.8 ± 11.0 year), hypertensive (G-hyp; n = 13, 45.2 ± 10.7 year) and...
Article
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ABSTRACT Elite athletes are particularly susceptible to sleep inadequacies, characterised by habitual short sleep (<7 hours/night) and poor sleep quality (eg, sleep fragmentation). Athletic performance is reduced by a night or more without sleep, but the influence on performance of partial sleep restriction over 1–3 nights, a more real-world scenar...
Article
Overtraining syndrome is a form of burnout, defined in endurance athletes by unexplained performance drop associated with intense fatigue sensation. Our working hypothesis is that the form of fatigue resulting from physical training overload might share some neural underpinnings with the form of fatigue observed after prolonged intellectual work, w...
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The aim of this study was to investigate the effects of regular post-exercise whole-body cryotherapy (WBC) on physiological and performance adaptations to high-intensity interval training (HIT). In a two-group parallel design, twenty-two well-trained males performed four weeks of cycling HIT, with each session immediately followed by 3 min of WBC (...
Article
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Purpose: To describe the training periodization in Rugby-7s players competing in the Sevens World Series during a non-Olympic season. Methods: Workload data were collected over a 33-week period in twelve male players participating in a full competitive season. Workload was quantified using session RPE and GPS-derived data during training and com...
Article
Purpose: To characterize the physiological profiles of elite cross-country mountain bike (XCO-MTB) cyclists, and to examine their pacing and power output (PO) distribution during international races. Methods: Over two competitive seasons, eight elite male XCO-MTB cyclists (VO2max: 79.9 ± 5.2 ml.min-1.kg-1, MAP: 411 ± 18 W and 6.3 ± 0.4 W.kg-1) r...
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PurposeWe investigated the effects of a 3-week dietary periodization on immunity and sleep in triathletes. Methods21 triathletes were divided into two groups with different nutritional guidelines during a 3-week endurance training program including nine twice a day sessions with lowered (SL group) or maintained (CON group) glycogen availability dur...
Conference Paper
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Introduction Appropriate tapering is considered to be critical for maximizing team sports performance. However, there is relatively little scientific information that can be used to guide coaches in prescribing appropriate tapering strategies for team sports players. The aim of this study was to monitor the changes in physical performance in elite...
Article
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Elite synchronized swimmers follow high-volume training regimen that result in elevated rates of exercise energy expenditure (ExEE). While adequate energy intake (EI) is important to optimize recovery, a number of sport-specific constraints may lead to chronically low energy availability (EA = EI-ExEE). This study aimed to quantify changes in EA, e...
Article
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PURPOSE: To compare the sensitivity of a sprint versus a countermovement (CMJ) test after an intense training session in international rugby Sevens players, as well as to analyze the effects of fatigue on sprint acceleration. METHODS: Thirteen international rugby sevens players completed two 30-meter sprints and a set of four repetitions of CMJ bef...
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Purpose: This study investigated the effect of different limb blood flow levels on cycling performance recovery, blood lactate concentration and heart rate. Methods: Thirty-three high-intensity intermittent trained athletes completed two 30 s Wingate anaerobic test sessions: 3 x 30 s Wingate test (WAnT 1-3) and 1 x 30 s Wingate test (WAnT 4), on...
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Purpose: We investigated the effect of a chronic dietary periodization strategy on endurance performance in trained athletes. Methods: 21 triathletes (V[Combining Dot Above]O2max: 58.7 ± 5.7 mL·min·kg) were divided into 2 groups: a "sleep-low" (SL, n = 11) and a control group (CON, n = 10) consumed the same daily carbohydrate (CHO) intake (6 g·k...
Article
To determine if pre-cooling (PC) following heat-acclimatization (HA) can further improve self-paced endurance performance in the heat, 13 male triathletes performed two 20-km cycling time-trials (TT) at 35 °C, 50% relative humidity, before and after an 8-day training camp, each time with (PC) or without (control) ice vest PC. Pacing strategies, phy...
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Purpose: This study describes the effect of the initial perceptual experience from heat-familiarisation on the pacing profile during free-paced endurance time-trial (TT) compared to temperate conditions. Methods: Two groups of well-trained triathletes performed two 20-km TT's either in hot (35°C and 50% RH, N = 12) or temperate (21°C and 50% RH,...
Article
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NutritionSummaryAims. —The aim of this review is to provide new insights about the manipulation of carbohydrate(CHO) intake on training adaptations and endurance performance.Actualities. — It has been recently shown that training with low CHO availability improves adap-tations to endurance training. Some studies manipulated exogenous CHO availabili...
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Purpose: The aim of the study was to investigate whether heart rate recovery (HRR) may represent an effective marker of functional overreaching (f-OR) in endurance athletes. Methods and results: Thirty-one experienced male triathletes were tested (10 control and 21 overload subjects) before (Pre), and immediately after an overload training perio...
Article
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L’objectif de cette revue est de dresser un état des lieux des études qui se sont intéressées à l’intérêt de la manipulation de l’apport glucidique sur les adaptations à l’entraînement et la performance en endurance.
Article
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Exercising in the heat induces thermoregulatory and other physiological strain that can lead to impairments in endurance exercise capacity. The purpose of this consensus statement is to provide up-to-date recommendations to optimise performance during sporting activities undertaken in hot ambient conditions. The most important intervention one can...
Article
Full-text available
Exercising in the heat induces thermoregulatory and other physiological strain that can lead to impairments in endurance exercise capacity. The purpose of this consensus statement is to provide up-to-date recommendations to optimise performance during sporting activities undertaken in hot ambient conditions. The most important intervention one can...
Conference Paper
Full-text available
Training strategies with low carbohydrate (CHO) availability (typically called “train low”) are increasingly used by endurance athletes in an attempt to improve their performance level. However, it is well known that increasing training stress dramatically increases the risk of bad adaptation to training and can increase the prevalence of illness a...
Article
Full-text available
Exercising in the heat induces thermoregulatory and other physiological strain that can lead to impairments in endurance exercise capacity. The purpose of this consensus statement is to provide up-to-date recommendations to optimize performance during sporting activities undertaken in hot ambient conditions. The most important intervention one can...
Article
Full-text available
This study compared the effects of a low-frequency electrical stimulation (LFES; Veinoplus(®) Sport, Ad Rem Technology, Paris, France), a low-frequency electrical stimulation combined with a cooling vest (LFESCR ) and an active recovery combined with a cooling vest (ACTCR ) as recovery strategies on performance (racing time and pacing strategies),...
Article
Full-text available
Exercising in the heat induces thermoregulatory and other physiological strain that can lead to impairments in endurance exercise capacity. The purpose of this consensus statement is to provide up-to-date recommendations to optimize performance during sporting activities undertaken in hot ambient conditions. The most important intervention one can...
Article
Full-text available
Recent research on whole-body cryotherapy has hypothesized a major responsibility of head cooling in the physiological changes classically reported after a cryostimulation session. The aim of this experiment was to verify this hypothesis by studying the influence of exposing the head to cold during whole-body cryostimulation sessions, on the therma...
Article
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L’objectif de cette revue est de réactualiser sous forme d’une synthèse, l’état des connaissances sur la cryothérapie corps entier (CCE) dans le contexte de l’exercice et plus particulièrement celui de la récupération. En effet, depuis notre précédente revue de questions sur ce thème dans Science et Sport en 2010 (Hausswirth et al., 2010), de nombr...
Chapter
Achieving a high level in sport requires physiological adaptation and development, which depend on the training stimulus and a number of other factors. Among these factors, nutrition plays a major role. Today, it is well established that modifying food intake can positively influence the body’s adaptive reaction to training and recovery processes....
Chapter
Performing elevated training workloads is susceptible to yield deleterious effects if the organism is unable to recuperate completely between training sessions. In this context, the recovery phase must be considered as an inherent component of the training process and must therefore be granted the same degree of attention, in its programming and ma...
Article
Full-text available
Introduction: Elite athletes frequently undergo periods of intensified training (IT) within their normal training program. These periods can lead athletes into functional overreaching, characterized by high perceived fatigue, impaired sleep and performance. As whole body cryostimulation (WBC) has been proven an effective recovery method in the shor...
Article
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Purpose: To assess the impact of between-training-sessions recovery strategies (passive [PAS], active [ACT], cold-water immersion [CWI], and ingestion of a recovery drink [NUTR]) on maximal cycling performance, perceptions of delayed-onset muscle soreness (DOMS), and fatigue in world-class BMX riders. Methods: Eleven elite BMX athletes, members...
Article
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Background: Functional overreaching (F-OR) induced by heavy load endurance training programs has been associated with reduced heart rate values both at rest and during exercise. Because this phenomenon may reflect an impairment of cardiac response, this research was conducted to test this hypothesis. Methods and Results: Thirty-five experienced mal...
Article
Background: Functional overreaching (F-OR) induced by heavy load endurance training programs has been associated with reduced heart rate values both at rest and during exercise. Because this phenomenon may reflect an impairment of cardiac response, this research was conducted to test this hypothesis. Methods and Results: Thirty-five experienced mal...
Conference Paper
Full-text available
Videos of the conference are now available online! http://www.canal-insep.fr/enhancing-muscle-capacities-strength-power-velocity INSEP, the French National Institute of Sport, is proud to announce the organization of an international conference entitled "Enhancing muscle capacities: strength, power, velocity", to take place in Paris on 19-20 May 2...
Article
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Purpose: To examine whether i) objective markers of sleep quantity and quality are altered in endurance athletes experiencing overreaching in response to an overload training program and ii) whether potential reduced sleep quality would be accompanied with higher prevalence of upper respiratory tract infections in this population. Methods: Twenty s...
Conference Paper
The aim of this study was to compare differences in speed, oxygen uptake (VO2 consumption), blood lactateconcentration ([La]b), and stroke rate (SR) between sprint and long-distance swimmers. Seven male and two female elite long-distance swimmers (LD) performance level=89% world record and versus seven male and two female sprint swimmers (S) perfor...
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Abstract The objective of this study was to investigate the effects of wearing compression socks (CS) on performance indicators and physiological responses during prolonged trail running. Eleven trained runners completed a 15.6 km trail run at a competition intensity whilst wearing or not wearing CS. Counter movement jump, maximal voluntary contrac...
Article
Purpose: To examine whether performance supercompensation during taper is maximized in endurance athletes after experiencing overreaching during an overload training period. Methods: Thirty three trained male triathletes were assigned to either overload training (n=23) or normal training groups (n=10, CTL) during 8 weeks. Cycling performance and ma...
Article
Full-text available
The objective of this study was to test how low-frequency electrical stimulation (LFES; Veinoplus Sport (AdRem Technology, Paris, France)) of the calf muscles affects recovery indices compared with 2 other commonly used recovery methods (active, ACT; passive, PAS). The tests used assessed predominantly anaerobic performance after short-term (15 min...
Article
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The aim of this study was to establish the minimum number of days that HRV (i.e., the natural logarithm of square root of the mean sum of the squared differences between R-R intervals, Ln rMSSD) data should be averaged in order to achieve correspondingly equivalent results as data aver