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Publications
Publications (90)
Enseigner la natation en la considérant autrement qu'une activité de performance standardisée peut considérablement enrichir les expériences et compétences des élèves pour s'engager dans ce milieu spécifique. Après avoir défini ce que représente une expérience que nous appelons "aventure", fortement chargée émotionnellement, nous proposons des stra...
The aim of this study was to ascertain whether performance in a series of water safety tests, in clothed and swimsuit conditions, were dependent on the swim stroke that beginners selected for traversing maximal distance. A total of 45 children (9.6 ± 1.6 years) involved in a learning programme were asked to complete six tests to: travel their maxim...
Study design:
A controlled and retrospective study of 144 chronic low back pain patients to evaluate the effectiveness of an intensive functional restoration program in France.
Objective:
Evaluating the efficiency of an intensive, dynamic and multidisciplinary functional restoration program in patients with chronic low back pain (LBP), during 6...
La prise en charge multidisciplinaire, dynamique et intensive de la lombalgie chronique permettrait de modifier le comportement des sujets lombalgiques chroniques face à la douleur. L’intensité douloureuse n’aurait pas d’effet sur les réponses et performances des sujets lombalgiques que ce soit au niveau physique, fonctionnel ou psychologique.
Background:
Chronic low back pain is a persistent lumbar pain of multifactorial origin. The initial pain level remains poorly used to analyze and compare responses in low back pain patients in a reconditioning program.
Objective:
To assess and evaluate the responses of subjects with very painful chronic low back pain in a dynamic and intensive c...
Chronic low back pain is a persistent lumbar pain of multifactorial origin. The initial pain level remains poorly used to analyze and compare responses in low back pain patients in a reconditioning program.
OBJECTIVE: To assess and evaluate the responses of subjects with very painful chronic low back pain in a dynamic and intensive care program.
ME...
This study investigated contents of training sessions from 387 regular swimmers involved in a recreational workout without supervision. We did use multiple correspondences analysis in order to identify self-trained swimmers typology in a sample from a social networking website, focusing on swimming practice. Self-reported parameters (n = 12) were a...
ABSTRACT Low back pain (LBP) is a widespread musculoskeletal condition that frequently occurs in the working-age population (including hospital staff). This study proposes a classification-tree model to predict LBP risk levels in Sacré-Cœur Hospital, Lebanon (as a case study-236 chosen staffs) using various predictor individual and occupational fac...
Un véritable manuel pour comprendre la natation sous toutes ses formes et optimiser sa pratique !
Des Savoirs pour des Natations
- Appropriez-vous les connaissances fondamentales concernant les savoirs essentiels de la natation : savoir s’engager en minimisant les risques, savoir nager vite, savoir nager longtemps et savoir s’entraîner.
Pour chacun...
Étudier la relation quantitative entre la fréquence de la douleur lombaire aiguë (DLA) et les différents facteurs de risque individuels et professionnels, et détecter les plus importants, susceptibles d’être utilisés comme arguments de poids dans les modèles prédictifs diagnostics de la DLA, en fournissant des outils efficaces pour aider à la mise...
Burnout is defined as a psychological syndrome with a three-dimensional construct: emotional/physical exhaustion, reduced
sense of accomplishment and devaluation (e.g., Raedeke, Journal of Sport and Exercise Psychology, 19, 396–417, 1997). It may have very negative effects on subjects’ well-being. It has been studied in several domains, but we
have...
To explore dual quantitative relationships between low back pain (LBP) prevalence and different individual and occupational risk factors, and detect the most important ones which can be used as weighted input data in LBP prediction diagnosis models, providing effective tools to help with the implementation of protection and prevention strategies am...
The aim of the present paper was to survey the emergence and the state of the literature in swimming research through the last centuries. Before 1970, the date of the first International symposium on biomechanics and medicine in swimming, scientific research in swimming was poor and anecdotal, and the improvements of performance were linked firstly...
Lactate threshold, Maximal Lactate Steady State (MLSS), and Critical Swimming Speed (CSS) represent distinct measures of endurance fitness. Each parameter can be used to assess a discrete aspect of swimming endurance. The lactate threshold can be identified from changes in the capillary blood lactate concentrations during an incremental step test....
This study examined in pubescent swimmers the effects on front crawl performances of a 6-week plyometric training (PT) in addition to the habitual swimming program. Swimmers were assigned to a control group (n = 11, age: 14.1 ± 0.2 years; G(CONT)) and a combined swimming and plyometric group (n = 12, age: 14.3 ± 0.2 years; GSP), both groups swimmin...
Evaluating the efficacy of an intensive, dynamic and multidisciplinary spine-specific functional restoration program in patients with chronic low back pain with or without surgery.
One hundred and forty-four subjects with chronic low back pain included in the retrospective study and divided into two groups: patients who had spine surgery (GI, n=81)...
Swimming has considerably changed over the last two centuries. Mainly a social practice (baths and leisure) until the end of the 19th century, it then acquired the status of sport in the early 20th Century well before reaching the level of professionalism it benefits from today. What was the role of research in this development? Patrick Pelayo expl...
The purpose of this study is to analyze the acute adaptations of motor organization subsequent to a reduction in spontaneous stroke rate (SR) at different swimming speeds, a task constraint that is currently used by trainers to improve stroke technique. Ten well-trained swimmers (8 males and 2 females, whose mean swimming speed on a 400-m front cra...
The aim of the present study was to assess whether the critical speed calculated by the slope of the distance-time relationship (S(d-t)) represents the boundary between the heavy and severe intensity domains in swimming and would be sustainable during intermittent exercise. Nine competitive male swimmers (mean+/-SD: aged 21.2+/-2.6 yrs; peak (.)VO2...
Race analyses during swimming reveal how exercise duration affects both clean swimming speed (v), stroke rate (SR), and stroke length (SL). The aim of this study is to provide an explanation for the change of SL and SR during paced exercise swimming the front crawl through an analysis of intracycle changes in motor organization.
Trained swimmers (N...
The purpose of this study was to measure physiological responses during exercise performed until exhaustion at the exercise intensity corresponding to the maximal lactate steady state (MLSS) in order to determine why subjects stopped.
Eleven male trained subjects performed a test at MLSS on a cycle ergometer until exhaustion.
Time to exhaustion was...
The aim of this study was to assess technical changes during constrained swimming in time-to-exhaustion tests. Ten swimmers of national standard performed a maximal 400-m front crawl and two sets of exhaustion tests at 95%, 100%, and 110% of mean 400-m speed. In the first set (free), swimmers had to maintain their speeds until exhaustion and mean s...
This study aims to determine whether the arm coordination observed at different stroke rates (SR, number of arm stroke cycles per minute) differs according to the level of expertise. Thirteen non-expert (G(NE)) and 14 expert (G(E)) swimmers swam crawl five 25-m lengths at five stroke rate values: 35, 40, 45, 50, and 55 cycles.min(-1). Results show...
The purpose of the present study was to test the validity of average power output measurement by a new stationary ergometer, the Elite Axiom, against the SRM Powermeter. An experienced cyclist completed, firstly, a series of 3min square wave exercises at different powers output at 90rpm, and secondly, a series of 3min square wave exercises at an id...
Critical power and critical swimming speed (CSS) are mathematically defined as intensities that could theoretically be maintained indefinitely without exhaustion. Several investigations have been conducted to attribute a physiological meaning to these variables, but results in swimming remain equivocal. Thus, the purpose of this study was to compar...
The purpose of this study was to analyse the effects of an exhaustive exercise on arm coordination and intracyclic velocity variations (IVV) to better understand the ways in which they are modified under fatigue conditions. Seventeen competitive swimmers performed a 200-m all-out test and a set of two 25-m (before and after the 200-m) at maximal in...
The purpose of this study was to determine whether preferred pedal rate (PPR) could be used as an index of cycling performance. Thirteen competitive cyclists cycled at PPR during a graded test and a supra-threshold constant power test (CPT). The results showed that PPR values reported in CPT were correlated to both peak power determined from the gr...
The purposes of this study were to ascertain whether physiological and stroking parameters remain stable during a 2-hour exercise performed at self-selected swimming speed (S4) and whether this speed corresponds to those associated with the maximal lactate steady state (SMLSS).
Ten well-trained competitive swimmers performed a maximal 400-m front c...
Cet article présente ue démarche pédagogique pour apprendre à nager à des enfants en échec lors des cours traditionneles de natation. il est destiné à la tranche d'âge des 10-12 ans lors d'un apprentissage massé (10 séances en 2 à 3 semaines).
The aim of this study was to analyse the variations of stroking parameters (speed, stroke length, stroke rate, and stroke index) associated with the 200 m front crawl competitive performance improvement. Two races completed by 17 top swimmers were analysed in the 200 m freestyle final of French or European championships, each final being separated...
The aim of this study was to examine the response of physiological parameters during exercise to exhaustion at Critical Power (CP). Eight male trained subjects performed a test to exhaustion on a cycle ergometer at a constant power corresponding to their previously determined CP. Mean CP value was 283.6±20W and corresponded to 85.4±4.8% of VO2 max....
Purpose. This study aimed to conclude on the determinant parameter of high-level improvement at the latest stage of sport development. Following literature conclusions, the hypothesis tested was that stroke length is the main factor to enhance to be successful in swimming. Basic procedures. From standard race analysis protocol, the stroking paramet...
The aim of this study was to analyse the variations of stroking parameters (speed, stroke length, stroke rate, and stroke index) associated with the 200 m front crawl competitive performance improvement. Two races completed by 17 top swimmers were analysed in the 200 m freestyle final of French or European championships, each final being separated...
In order to increase or maintain speed at sub-maximal intensities, well-trained swimmers have an increase in their stroke rate, thus a decrease in their stroke. The purposes of this study were i) to ascertain whether the maximal speed from which the stroke length decreases significantly (SSLdrop) corresponds to the maximal lactate steady state swim...
The aim of the present study was to compare electromyographic responses during arm exercises with a crank rate chosen spontaneously (T
S) or set at 20% below or above (T
−20, T
+20) the spontaneously chosen crank rate (SCCR). Ten male physical education students performed arm exercises with intensities ranging from 20% to 80% of maximal power. Musc...
The aim of this study was to evaluate the effect of a 15% increase in preferred pedal rate (PPR) on both time to exhaustion and pulmonary O(2) uptake (VO(2)) response during heavy exercise. Seven competitive cyclists underwent two constant-power tests (CPT) at a power output that theoretically requires 50% of the difference in VO(2) between the sec...
The aim of this study was to evaluate the effect of a 15% increase in preferred pedal rate (PPR) on both time to exhaustion and pulmonary O(2) uptake (VO(2)) response during heavy exercise. Seven competitive cyclists underwent two constant-power tests (CPT) at a power output that theoretically requires 50% of the difference in VO(2) between the sec...
The purpose of this study was to verify whether the maximal lactate steady state (MLSS) corresponds to a physiological steady state. Eight male trained subjects performed a 30-min test on a cycle ergometer at a constant power corresponding to their own MLSS which had been previously determined. No significant variation was observed between the 10th...
The purpose of the present investigation was to determine to what extent the protocol (incremental and constant load exercises) affects the ratings of perceived exertion for a given submaximal intensity on a cycle ergometer. 10 healthy and well-trained male students (M age=23 yr., SD=2.9) performed an incremental exercise to determine maximal oxyge...
Critical power (CP) and the second ventilatory threshold (VT(2)) are presumed to indicate the power corresponding to maximal lactate steady state (MLSS). The aim of this study was to investigate the use of CP and VT(2) as indicators of MLSS. Eleven male trained subjects [mean (SD) age 23 (2.9) years] performed an incremental test (25 W.min(-1)) to...
To compare plasma lactate concentration recovery kinetics when measured and corrected for variations in plasma volume between children and adults.
Nine boys (11.3 +/- 1.1 y) and 8 men (21.9 +/- 1.9 y) performed a maximal and a supramaximal exercise until exhaustion. Plasma lactate concentrations, haemoglobin and haematocrit were measured at rest, i...
This critical review reflects the current state of cadence research during cyclical activities at different intensities. Moreover, this review aims at making suggestions in the areas of evaluation, therapy and sporting performance in the light of all the different results reported in studies. A large number of researchers have tried to determine th...
The purpose of this study was to analyse the effects of an exhaus- tive exercise on arm coordination and intracyclic velocity varia- tions (IVV) to better understand the ways in which they are modified under fatigue conditions. Seventeen competitive swimmers performed a 200-m all-out test and a set of two 25- m (before and after the 200-m) at maxim...
The present study assessed whether the first and the second ventilatory thresholds (VT1 and VT2) were dependent on the muscle groups solicited when spontaneously chosen crank and pedal rates are used. 20 physical education male students (22 +/- 2.2 yr.) performed two maximal incremental tests randomly assigned using an increment of 15 and 30 W ever...
The aim of this study was to compare the cardiorespiratory and efficiency responses between upper (T(UBE)) and lower (T(LBE)) body exercises at the same relative power outputs and with spontaneously chosen crank (SCCR) or pedal (SCPR) rates. Twelve participants performed exercise bouts set at 20, 40, 60 and 80% of maximal power (MP) separated by pa...
The purpose of this investigation was to determine whether the concepts of critical swimming speed, critical stroke rate and anaerobic swimming capacity could be used by coaches as a reliable index in order to monitor endurance performances in competitive swimmers. The results of this study conducted with well-trained swimmers showed that the 30-mi...
The aim of the present study was to compare the physiological responses during arm exercises when the crank rate was chosen spontaneously (TS) or set at +/- 20 % (T-20, T+ 20) of the spontaneously chosen crank rate (SCCR). Eight physical education male students, aged 22 +/- 3.2 years, performed an upper body exercise in which intensities ranged fro...
To compare plasma lactate concentrations and plasma lactate kinetics during recovery, for measured and corrected values for changes in plasma volume, after a maximal aerobic exercise.
Sixteen male subjects performed an incremental and maximal exercise in order to reach maximal aerobic power. Prior to the exercise, at the end and during recovery (2,...
Purpose - To compare plasma lactate concentration ([Lap]) when measured and corrected with regard to variations in plasma volume (ΔPV), in children and adults for maximal and supramaximal exercises. Methods - 9 children et 8 adults performed a maximal and a supramaximal exercise until exhaustion. The [Lap] were measured immediately at the completio...
The aim of this study was two-fold. First, the rating of perceived exertion (RPE) was compared between two different upper and lower body exercises. Subjects (n = 12) performed with spontaneously chosen crank or pedal rates: (i) incremental maximum power tests (Test 1), with an initial work rate of 50% of maximal power followed by increases of 10%...
The aim of this study was to compare the maximal physiological steady state intensities estimated by different variables (blood lactate concentration, [La]; heart rate, HR; systolic blood pressure, SBP) from two 20min tests performed at sub-maximal intensities in running and swimming. Eight well-trained male triathletes ran two 20min tests set at 6...
Objective.
To correct blood lactate concentrations measured after maximal and supramaximal exercises in relation to changes in plasma volume. To compare lactate kinetics calculated from measured blood lactate concentrations with those calculated from corrected values.
Material and methods.
Eight male adults performed a maximal exercise and a supra...
The purposes of this study were to analyze velocity (V), stroke length (SL), and stroke rate (SR) values during the 100-m freestyle competitive events in top level male and female swimmers with a disability (DS) according to the international Functional Classification System (FCS) and to compare the results obtained with those of able-bodied swimme...
The aim of the present study was to compare the physiological responses when the crank rate was chosen spontaneously (Ts) or set at +/- 10% (T-10%, T+10%) of the freely chosen rate, during two upper body exercises: i) a sub-maximal test (T(SUB)) in which intensities ranged from 50 to 80% (118.4 +/- 10.2 to 189.5 +/- 16.3 watts) of maximal power (MP...
The aim of this study was to assess the relationship between spontaneously chosen crank rate (SCCR) and power output during two upper body exercise tests: firstly, an incremental maximal aerobic power test (T1), with an initial intensity of 50 W followed by 15-W increases at each subsequent 90-s stage and secondly, a test (T2) with consecutive exer...
The purpose of this study was to analyze how much different procedures influence the values of stroke length (SL) and may affect the comparisons between different groups such as male vs female swimmers and 100 vs 200m swimmers in each stroke. 640 male and 640 female swimmers of national and international levels were tested in real competition condi...
The purpose of this study was to identify the stroking characteristics used by top level swimmers during a 100 m freestyle event. Forty swimmers were tested in real competition conditions on the 100 m freestyle event during French national championships (n = 16) and international meetings (n = 24). Stroking parameters such as velocity (V), stroke r...
The aims of the present study were: first, to assess the interindividual variations of a spontaneously chosen crank rate (SCCR) in relation to the power developed during an incremental upper body exercise on an arm ergometer set at a constant power regime, and second, to compare heart rate (HR) responses, expired minute ventilation (V˙
E) and oxyge...
It was hypothesized that swimming velocity (V) and stroking parameters such as stroke length (SL), stroke rate (SR) and stroke index (SI) are influenced by age, gender, and some anthropometric characteristics.
Cross-sectional study.
Grammar school pupils from French schools.
One thousand and ninety-seven males and 961 females non skilled swimmers a...
The purpose of the study was to identify the stroking characteristics such as rate and length used by male swimmers of differing skill and to analyze the variations of velocity, stroke rate, and stroke length during the course of the race. The performance of 442 male subjects including 40 swimmers competing at an international 100-m freestyle event...
The dependence of heart rate (HR) and blood lactate concentration ([La]) on the stroke rate (SR)/stroke length (SL) ratio is studied, on the one hand, during a constant arm cycling exercise and, on the other hand, during two different and constant types of swimming exercises over varying distances. According to many authors, the results of the firs...
In order to compare the Maximal Aerobic Speed (MAS) evaluated with different methods, eleven male physical education students (22.2 +/- 3.0 years) were submitted to a maximal treadmill protocol and to the Université de Montréal Track Test (UMTT). Four methods were used to calculate MAS. After treadmill measurement of VO2max, MAS was calculated (MAS...
The purpose of this study was to determine the relationships between velocity, stroke length, and stroke rate in freestyle competitive events in order to compare male and female swimmers' results and assess their relationships with anthropometric characteristics. Three hundred three male and 325 female swimmers of national and international levels...
The purpose of this study was to relate measurements of blood lactate concentration, performance during a maximal anaerobic lactic test (MANLT) and training loads during a 23-week swimming season. Six elite 200-m freestyle male swimmers [mean age 19.5 (SD 1.6) years, height 184 (SD 5) cm and body mass 77.7 (SD 9.0) kg], participated in the study. T...
The relations between swimming velocity (V), stroke rate (SR) and stroke length (SL) are regularly investigated according to changes in regulations or improvements in technique. In this study, 377 male and 369 female elite swimmers were assessed on 100m and 200m competitive events in freestyle, butterfly, backstroke and breaststroke. For each swimm...
The purpose of the present study was to subject two groups (G1: 21 high-level swimmers aged 18±1.5 and G2: 17 prepubescent swimmers aged 12 ± 0.5) of male swimmers to a test in tethered swimming conditions in order to assess their swim peak force (SPF). Swimming velocity (V50) was calculated from a 50m freestyle sprint. Prediction equations were de...
The purpose of the study was to assess the feasibility and the effects of a weekly training programme including biofeedback swimming hand paddles on swimmer skill with cerebral palsy subjects (CPS). Eight top level CPS performed pre and post training assessment sessions which consisted of a 50m test, a functional maximal aerobic power test (FMAPT)...
The purpose of the present study was to submit disabled swimmers to two maximal swimming tests, and by comparing the physiological and performance responses of disabled and normal swimmers to determine if these adapted tests can be used to design training programmes for this particular class of swimmer. Two groups of disabled (n = 8 and 6) and two...
Les valeurs échocardiographiques, ventilatoires de V̇O2max ont été suivies chez 16 nageurs régionaux (huit garçons de 12 ans ± 9 mois et huit filles de 11 ans ± 9 mois) comparativement à des témoins de même âge. Ventilation et échanges mesurés par la méthode du transfert du CO en apnée se situaient initialement dans les normes. Après 12 mois d'entr...
So far, a few studies have been conducted on the Critical swimming velocity concept. The current available knowledge suggests there is merit in using CV for training. The model offers potential to swimming in that it is non-invasive and easy to administer. The CV concept appears as a useful tool for setting training intensities, monitoring training...
The concept of Critical Power (CP) has been extended to running, cycling, and swimming. However, applying the CP concept to cyclic activities imposes several assumptions (di Prampero, 1999) not always apparent to scientists and coaches. Their understanding would allow a better appreciation of the potential of this concept when applied as a tool for...
Session XI :TICE et sciences du sport Président : Bertrand DURING, Paris 5, président de la conférence des doyens et directeurs STAPS Modérateurs: Patrick PELAYO (Lille), Jean Marc BRUNETAUD (Lille2), Mohamed LATIFI (Marrakech) De l'image du mouvement à l'image en mouvement. Une petite histoire des techniques d'enregistrement en éducation physique...
11e Congrès International Internet et Pédagogie de la Santé et du Sport12 & 13 Novembre 2010 – Université Victor Segalen - Bordeaux 2-----------------------------------------------------------------------------------------------------Session d’OuvertureLe développement de la pédagogie numérique est un axe stratégique et prioritaire de la politique...
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