Anne Favre-Juvin

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Laboratory treadmill running tests are commonly used to assess the effect of training programs and to prescribe training intensity for cross-country skiers. The present study compared the physiological parameters during a treadmill running (R) test and a field roller skiing (RS) test both at the beginning (Beg) and at the end (End) of a 6-month specific(More)
AIM Indirect calorimetry during exercise provides two metabolic indices of substrate oxidation balance: the crossover point (COP) and maximum fat oxidation rate (LIPOXmax). We aimed to study the effects of the analytical device, protocol type and ventilatory response on variability of these indices, and the relationship with lactate and ventilation(More)
This study examines the response of exhaled nitric oxide (NO) concentration (ECNO) and quantity of exhaled NO over time (EVNO) in 10 healthy subjects breathing into five polyethylene bags, one in which synthetic air was free of NO and four in which NO was diluted to concentrations of 20 +/- 0.6, 49 +/- 0.8, 98 +/- 2, and 148 +/- 2 ppb, respectively. Each(More)
The aim of this study was to determine whether the power output associated with a maximal lactate steady state (MLSS) (ẆMLSS) can be assessed using a single incremental cycling test. Eleven recreational sportsmen (age: 22±1 years, height: 175±6 cm, weight: 71±5 kg) volunteered to participate in the study. For each subject the first and second ventilatory(More)
AIM Endogenous nitric oxide (NO) through its relaxing effect on smooth muscle cells may be involved in pulmonary gas exchange as well as in the modulation of the hypoxic pulmonary vasoconstriction. As athletes with exercise-induced hypoxaemia (EIH) present pulmonary gas exchange abnormalities in normoxia that could be even greater in hypoxia, we(More)
This study examines the response of the exhaled nitric oxide (NO) concentration (CNO) and the exhaled NO output (VNO) during incremental exercise and during recovery in six sedentary women, seven sedentary men, and eight trained men. The protocol consisted of increasing the exercise intensity by 30 W every 3 min until exhaustion, followed by 5 min of(More)
Sedentary human subjects (n = 6) and two homogeneous groups of athletes, trained for down-hill skiing (n = 5) and cross-country skiing (n = 7), were subjected to cardiorespiratory testing and to evaluation of the bioenergetics of calf muscles by means of Phosphorus Nuclear Magnetic Resonance Spectroscopy. The exercise consisted of successive plantar(More)
In children, fatigue induced by regular sport activity with important training sessions and competitions is still difficult to objective. The purpose of this study was to evaluate the fatigue induced by intensive training, with an auto-questionnaire of fatigue specially elaborated for sport children aged in 8 to 16 year-old, and the incidence of age, sex(More)
This study was performed to determine the influence of single and repetitive exercise on nitric oxide (NO) concentration in the lung. Exhaled NO concentration (FE(NO)) was measured during a constant-flow exhalation manoeuvre (170 ml x s(-1), against a 10 cmH2O resistance) in healthy individuals (a) during and after a 100-min square-wave exercise of between(More)
OBJECTIVE To assess quadriceps strength and fatigability by using femoral nerve magnetic stimulation (FNMS) and their relationship to exercise capacity in patients with fibromyalgia syndrome (FMS) and healthy controls. METHODS Twenty-two women (11 with FMS, 11 controls) performed a maximal incremental cycling test and a quadriceps fatigue test on 2(More)