HAUSSWIRTH , Christophe

Introduction.-The purpose of this study was to test the reproducibility of the Fitmate TM metabolic system in measuring breathing gas during a cycling exercise.Synthesis of the facts.-Twenty-one participants performed during two sessions three 5-min exercises at submaximal intensities (16, 18 et 21 km/h). The reproducibility of respiratory...

As soluble intercellular adhesion molecule-1 (sICAM-1) was recently hypothesized to be a key player in the mechanisms involved in exercise-induced muscular damage (EIMD), we investigated its circulating concentration changes in athletes before and after EIMD with and without the use of whole-body cryostimulation (WBC; 3 min at −110 °C) at the...

Purpose: To investigate 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 × 30-s (WAnT 1–3) and 1 × 30-s (WAnT 4), on a cycling ergometer. WAnT 1–3...

The purpose of this study was to test the effect of a three-week strength training program of knee extensor muscles on cycling delta efficiency in master endurance athletes. 9 master (age: 51.5 ± 5.5 yr) and 8 young (age: 25.6 ± 5.9 yr) endurance athletes with similar training levels participated in this study. During 3 consecutive weeks, all...

The purpose of this study was to examine the relationship between strength capacity and preferred and optimal cadence in well trained cyclists. Eighteen cyclists participated in this study. Each subject completed three sessions. The initial session was to evaluate the maximal isokinetic voluntary contraction level of lower limb. The second...

Context : Electric muscle stimulation has been suggested to enhance recovery after exhaustive exercise by inducing an increase in blood flow to the stimulated area. Previous studies have failed to support this hypothesis. We hypothesized that the lack of effect shown in previous studies could be attributed to the technique or device...

Aims: This review focuses first of all on the effects of the cold and/or contrast water immersion techniques on muscular recovery to determine practical implications for athletes. Then, the present review summarizes the effects of whole-body cryotherapy and its potential benefits.Actualities: The multitude of protocols concerning the cold water...

Aim.- The purpose of this study was to analyze the effectiveness of supplementation in vitamin on the maximal muscular performance in master athletes during a strength training program.Method.- Twenty well-trained master athletes took part in a three weeks strength training program and in a same time in a micro nutritional supplementation...

The influence of vitamin and mineral complex supplementation on muscular activity and cycling efficiency was examined in elderly endurance-trained master athletes during a heavy cycling trial. Master athletes were randomly assigned in a double-blind process to 1 of 2 treatment groups: antioxidant supplementation (n = 8: As group) or placebo (n...

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The aim of this study was twofold: i) to analyze age-related declines in swimming, cycling, and running performances for Olympic and Ironman triathlons, and ii) to compare age-related changes in these three disciplines between the Olympic and Ironman triathlons. Swimming, cycling, running and total time performances of the top 10 males between...

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...

The aim of the present study was to determine the best pacing strategy to adopt during the initial phase of a short distance triathlon run for highly trained triathletes. Ten highly trained male triathletes completed an incremental running test to determine maximal oxygen uptake, a 10-km control run at free pace and three individual time-trial...

The aim of the present study was to investigate the physiological demands of Supercross BMX during a simulated competition in elite athletes. During a preliminary session athletes underwent an incremental cycling test to determine maximal oxygen uptake (VO 2max) and power at ventilatory thresholds. In a second phase, athletes performed alone a...

Objective: To assess whether Ramadan intermittent fasting (RIF) affects 5000m running performance and physiological parameters classically associated with middle distance performance.Design: Eighteen subjects (age 23.6±2.9 yr, body mass 64 ± 2.3 kg) divided in two experimental groups (Ramadan fasting (n = 9 vs. control, n= 9) participated in...

To determine the acute effects of a trail running competition and the age-dependent differences between young and master athletes, 23 subjects [10 young (30.5 ± 7 years), 13 master (45.9 ± 5.9 years)] participated in a 55-km trail running competition. The study was conceived as an intervention study compromising pre, post 1, 24, 48 and 72 h...

The objectives of the present investigation was to analyze the effect of two different recovery modalities on classical markers of exercise-induced muscle damage (EIMD) and inflammation obtained after a simulated trail running race. Endurance trained males (n = 11) completed two experimental trials separated by 1 month in a randomized crossover...

Purpose: The purpose of this study was to investigate the influence of different cycling cadences on metabolic and kinematic parameters during subsequent running.Methods: Eight triathletes performed two incremental tests (running and cycling) to determine maximal oxygen uptake (V̇O2max) and ventilatory threshold (VT) values, a cycling test to...

PURPOSE: To evaluate spring-mass (SM) behavior and associated electromyographic (EMG) activity during a run to exhaustion following a cycle exercise in trained triathletes. METHODS: Ten triathletes completed four tests: a cycling test to determine V˙O(2max); a running test to determine the lactate threshold (LT); a 5 min control run at LT...

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...

The aim of this study was to examine the effects of cool water immersion (20°C; CWI), wearing a cooling jacket ('Cryovest';V) and a passive control (PAS) as recovery methods on physiological and thermoregulatory responses between two exercise bouts in temperate conditions. Nine well-trained male cyclists performed two successive bouts of 45min...

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 contraction...

The purpose of the present study was to examine relationships between athlete's pacing strategies and running performance during an international triath-lon competition. Methods: Running split times for each of the 107 finishers of the 2009 European Triathlon Championships (42 females and 65 males) were determined with the use of a digital...