Effet d’un exercice de type aérobie sur le stress oxydatif : étude comparative entre judokas et sédentaires
Publication date: April 2018Source: Science & Sports, Volume 33, Issue 2Author(s): K. Elabed, L. Masmoudi, K. Trabelsi, A. HakimRésuméObjectifL’objectif de ce travail était d’identifier l’effet de l’exercice aérobie sur les marqueurs du stress oxydatif. Il s’agit d’une étude prospective qui a été réalisée dans le cadre des travaux menés par le laboratoire de pharmacologie de la faculté de médecine de Sfax.Matériel et méthodesLa population d’étude a été divis&ea...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Exercice physique et cinétique glycémique chez l’adolescent atteint de diabète de type 1 à Brazzaville (Congo)
Publication date: April 2018Source: Science & Sports, Volume 33, Issue 2Author(s): J.R. Mabiala Babela, S.V. Missambou Mandilou, E. Bouenizabila, L.C. Ollandzobo Ikobo, E.R. Nika, A. Massamba, P. SengaRésuméObjectifApprécier l’influence de l’effort physique, de l’âge et de l’état nutritionnel sur la cinétique de la glycémie chez l’adolescent atteint de diabète de type 1.Matériel et méthodesÉtude transversale, cas-témoins, incluant 29 adolescents atteints de diabète de type 1 (DT1) et 29 non-...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effects of exercise training and nebivolol treatment on atherosclerotic plaque development, iNOS expression and antioxidant capacity in apoE−/− mice
ConclusionWhile aerobic exercise training reduces antioxidant activity in the liver, nebivolol treatment attenuates atherosclerotic plaque development in apoE−/− mice, but the expression of iNOS is not affected. The combination of treatments does not add on benefits.RésuméObjectifsÉvaluer les effets de l’entraînement physique et du nébivolol soit seul ou en combinaison sur le développement de la plaque athérosclérotique, l’expression de l’iNOS et la capacité antioxydante chez les souris déficitaires en apolipoprotéine ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Heel lifts stiffness of sports shoes could influence posture and gait patterns
Publication date: April 2018Source: Science & Sports, Volume 33, Issue 2Author(s): S. Hessas, M. Behr, M. Rachedi, I. BelaidiSummaryPurposeThe aim of this study was to investigate how different commercial heel lift stiffness could affect gait and posture patterns, in order to propose to athletes the most appropriate which can reduce injury risk by moderating the effects of repeated impacts, plantar pressure and excessive pronation or supination.MethodsTen healthy young male volunteers were asked to wear successively three pairs of heel lifts, with identical geometry but different stiffness. Static tests consisted in me...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

A wearable sweat rate sensor to monitor the athletes’ performance during training
ConclusionWe presented a prototype of a wearable sweat rate sensor for localized measurements. The trials on thirteen athletes proved that the performance of our sensor is comparable to that of a commercial medical device. This sweat rate sensor can provide valuable information on athletes’ hydration status.RésuméObjectifsNous avons développé un capteur portable pour mesurer le taux de sudation en temps réel dans des zones précises du corps humain. Ce capteur pourrait conduire à un réseau portable, afin d’estimer le débit sudoral global, via un algo...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Reference values of vertical jumping performances and anthropometric characteristics in trained adolescents
ConclusionPercentiles values of vertical jumping performances and anthropometric characteristics are provided. the new Tunisian reference charts obtained can be used as a screening tool to determine growth disorders. This study may help in verifying the effectiveness of a specific training program and detecting highly talented athletes.RésuméObjectifConstruire des courbes et équations de percentile pour les performances de saut vertical et les paramètres anthropométriques à partir d’un échantillon représentatif d’adolescents sportifs tunisiens issus de plu...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Low intensity resistance exercise attenuates the relationship between glucose and autonomic nervous system indicators during 24 hours in women with type 2 diabetes
Publication date: April 2018Source: Science & Sports, Volume 33, Issue 2Author(s): L.C. Cruz, A.A. Teixeira-Araujo, K.T.P. Andrade, T.C.O.G. Rocha, S.R. MoreiraSummaryObjectivesThe aim of this study was to investigate the relationship between glucose and heart rate variability (HRV) during 24 h after different resistance exercise (RE) intensities in women with type 2 diabetes (T2D).Equipment and methodsTwelve women with T2D (55.2 ± 4.0 years; 70.1 ± 11.4 kg; 155.7 ± 3.3 cm) performed experimental sessions divided in two blocks separated by seven day...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effect of aerobic exercises on students’ physical health indicators
Publication date: April 2018Source: Science & Sports, Volume 33, Issue 2Author(s): Y. Niu, D. Zhou, Z. MaSummaryObjectivesThe purpose of this research was to explore the impact of 12-week aerobic exercises on both weight index and indicators of cardiovascular endurance. An increasingly passive life-style of students has led to a growth in health related disorders. Complex aerobic exercises are regarded as a kind of activity affecting youth physical health.Equipment and methodsMaximum heart rate and maximum oxygen consumption were measured. Participants included 1180 17–21 aged students from five universities in A...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Clavicule flottante, à propos d’un cas
ConclusionLa clavicule flottante est une lésion traumatique rare mais potentiellement invalidante. Son diagnostic a bénéficié de l’apport de la TDM avec reconstruction 3D permettant un bilan lésionnel précis. Le choix du traitement est difficile. Chez les patients jeunes et actifs, une réduction anatomique à ciel ouvert et une stabilisation adéquate sont recommandées.SummaryIntroductionFloating clavicle or bipolar clavicular dislocation is a rare and little-known affection of the shoulder girdle. Through a case report and a review of the literature...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effect of weight-bearing overload using elastic tubing on balance and functional performance in athletes with chronic ankle instability
Publication date: Available online 11 April 2018Source: Science & SportsAuthor(s): G.R. Melam, A.A. Alhusaini, V. Perumal, S. Buragadda, A. Albarrati, R. LochabSummaryObjectivesThe purpose of the study was to investigate the effect of an exercise program using elastic tubing as a perturbation force on balance and functional performance in athletes with chronic ankle instability.Equipment and methodsThirty young university-level competitive athletes with chronic ankle instability participated in this pre–post experimental study. The star excursion balance test and single leg hop test were used to measure balance a...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effects of walking exercises on body composition, heart rate variability, and perceptual responses in overweight and obese adolescents
Publication date: Available online 12 April 2018Source: Science & SportsAuthor(s): A. Hamila, M. Younes, F. Cottin, Y. Ben Amor, R. Shephard, Z. Tabka, E. BouhlelSummaryBackgroundTo assess the effects of various walking rehabilitation programs on body composition, heart rate variability, aerobic fitness and perceptual responses of overweight and obese young adolescents.MethodsA total of 31 young overweight and obese adolescents (12 boys and 19 girls) were randomly assigned to one of 4 groups: a group walking at 70% of maximal aerobic speed (70%MAS G, n = 7), a group walking at 50% of maximal aerobic speed (50...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Sports practice is related to resting heart rate in adolescents regardless of confounding factors: Cross-sectional study
ConclusionResults indicate that practice of sports constitutes an important tool against high resting heart rate values.RésuméIntroductionNous avons étudié les associations entre le niveau de pratique de l’activité physique et la fréquence cardiaque de repos chez les adolescents.Résumé des faits et des résultatsL’échantillon était composé de 716 filles et 515 garçons âgés de 14 à 17 ans (15,55 ± 1,07). La fréquence cardiaque de repos a été &eacu...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Throwing distance constraints regarding kinematics and accuracy in high-level boccia players
ConclusionThe degree of spasticity and trunk control might affect performance in this sport.RésuméObjectifsLa boccia est un sport de précision qui exige une haute coordination et un contrôle des mouvements. Les catégories de handicap pour ce sport, tels que l’ataxie, l’hypertonie et l’athétose, provoquent des limitations dans la coordination des sportifs. L’objectif de cette recherche est d’étudier si la variation de la distance de tir peut altérer la cinématique et la précision de tir des athlètes.MéthodesCinq ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effect of physical exercise on hippocampal volume in adults: Systematic review and meta-analysis
ConclusionThe results suggest that MICT, RT and CT could potentially augment hippocampus volume, being its practice encouraged to both prevent and treat individuals with neurodegenerative disease as Alzheimer.RésuméObjectifsIdentifier et évaluer l’effet des différents types d’activité physique (EP) sur le volume de l’hippocampe chez les humains.InformationsLes sources de données recherchées étaient : Medline/PubMed, Scopus, SPORTDiscus, Cochrane, Lilacs et Scielo. Ont été exclus de l’analyse les articles qui décrivaien...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Does a congested fixture schedule affect psychophysiological parameters in elite volleyball players?
Publication date: Available online 17 April 2018Source: Science & SportsAuthor(s): A.L. Mortatti, J.C.B.L. Pinto, R. Lambertucci, S.M. Hirabara, A. Moreira (Source: Science and Sports)
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Exercise training and pulmonary arterial hypertension: A review of the cardiac benefits
ConclusionRegular aerobic exercise of moderate intensity promotes cellular and molecular adaptations that improve myocardial function and structure along with increased exercise tolerance and survival.RésuméObjectifsLes patients souffrant d’hypertension artérielle pulmonaire (HAP) présentent une réduction de la capacité fonctionnelle et de la tolérance à l’effort. Malgré les preuves que l’entraînement physique est bénéfique pour cette population, il est encore testé si un exercice physique régulier peut att&ea...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Fitness benefits of padel practice in middle-aged adult women
This study aimed to quantify and compare the physical fitness condition and body composition in two groups of adult women (35–55 years old): sedentary (n = 30) and padel players (n = 30). Physical fitness assessment included static balance, upper-body muscular strength, lower-body muscular strength, abdominal endurance, lower-body flexibility and aerobic endurance. Body composition measurement included stature, height, body mass index, hip and waist circumference, skin-fold thickness and percentage of body fat. Women padel players get a better fitness conditioning, particularly in abdominal endurance (P 
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Oxidative stress, muscle and liver cell damage in professional soccer players during a 2-game week schedule
Publication date: Available online 17 April 2018Source: Science & SportsAuthor(s): D. Viana-Gomes, F.L.L. Rosa, R. Mello, G.A. Paz, H. Miranda, V.P. SalernoSummaryObjectivesThe purpose of this study was to investigate the redox status in professional football players during a championship period consisting of two games interspersed with low-intensity training.MethodsThe collection of blood and saliva began at the start of a championship tournament that followed a week without any strenuous activity after a full season of games. Six collections were performed: (1) basal; (2) post-game one (day 2); (3) 48 h pos...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Association of ACE ID and ACTN3 C>T genetic polymorphisms with response to a multicomponent training program in physical performance in women from 50 to 70 years
This study examined the effects of ACE ID and ACTN3 C>T in response to a multicomponent training program on power and strength levels, aerobic endurance and agility in women from 50 to 70 years.MethodsThe multicomponent training program was performed for 12 weeks, twice a week and each training session lasted 90 min.ResultsRegarding the ACE gene, the three groups improved performance in all tests, with the exception of the DD group in the sit to stand test and the ID group in the 6 minutes-walking test. Regarding the ACTN3 gene, the three groups improved performance in all tests, with the exception of the TT g...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Force-velocity muscular profiles and jumping performances of soccer goalkeeper
ConclusionThis suggests that whatever the goalkeepers’ level, specific and conditioning trainings should mainly focus on velocity to optimize the performance of this specific soccer player.RésuméObjectifsLe but de l’étude était de déterminer les capacités et profils musculaires mécaniques de gardiens de but de football très entraînés jouant au niveau national amateur.Matériels et méthodesOnze gardiens de but (de 4e division) ont réalisé des tests de sauts verticaux et, à l’aide d’une barre gu...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effets de l⬢entraînement pliométrique sur les propriétés mécaniques et géométriques du système muscle-tendon des fléchisseurs plantaires
ConclusionLes 10 semaines d⬢entraînement pliométrique ont modifié les performances en détente verticale, en souplesse et en force des sujets entraînés. Cette évolution des performances en détente et en force notamment pourraient être associées à la diminution de raideur de la fraction active de la composante élastique en série, à l⬢augmentation de raideur de la fraction passive de la composante élastique en série ainsi qu⬢à la diminution du coefficient de dissipation du tendon d⬢achille.SummaryOb...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Differential effects of post-exercise ice water immersion and room temperature water immersion on muscular performance, vertical jump, and agility in amateur rugby players: A randomized controlled trial
This study compared the effects of post-exercise water immersion at different temperatures on the muscular and functional performance in rugby players.MethodsFifty-three participants (21.6 ± 2.9 years) were randomly assigned to an ice water immersion (IWI; 5̊C) group, a room temperature water immersion (RWI; 25̊C) group, or a no-immersion group. After a bout of fatiguing exercise, the participants underwent an immersion intervention. The outcomes were measured at baseline and post-intervention. The isokinetic peak torque and time to peak torque during knee extension and flexion at 60°/s were rec...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Motor preferences in running and quiet standing
ConclusionThese preliminary results support the existence of an overlap in how humans regulate running and quiet standing, which is likely to involve local and global mechanisms.RésuméIntroductionLe pattern de course est un mouvement global et coordonné dans lequel différentes poses de pied peuvent être utilisés. Les poses de pied en talon et en plante de pied induisent des activations musculaires distinctes avec les fléchisseurs et extenseurs de cheville comme principaux régulateurs. Ces muscles jouent également un rôle dans le maintien de la position sta...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effects of strength training on bioenergetics parameters determined at velocity corresponding to maximal oxygen uptake in endurance runners
ConclusionsThese findings suggest that 8 weeks strength training improved the maximum dynamic strength and did not alter bioenergetics parameters measured at vV˙O2max in recreational endurance runners.RésuméObjectifLa présente étude analyse l’impact d’un programme d’entraînement en force sur paramètres bioénergétiques du jogging déterminés à la vitesse correspondant à l’absorption maximale d’oxygène (vV˙O2max).MéthodesSeize coureurs récréatifs à longue distance ont ét&...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Évaluation de la prévalence de l’hypertension artérielle de l’adulte en milieu du travail à Kinshasa, République Démocratique du Congo
Publication date: Available online 10 May 2018Source: Science & SportsAuthor(s): G. Kusuayi Mabele, C. Nkiama Ekisawa, C. Delecluse, F. Lepira Bompeka, A. NkodilaNatuhoyilaResumeContexteL’hypertension artérielle (HTA) est un facteur de risque cardiovasculaire majeur dans la survenue d’accidents vasculaires cérébraux, d’insuffisance cardiaque, d’insuffisance rénale et de maladies coronaires qui représentent les principales causes de décès dans le monde. Les données insuffisantes sur l’hypertension artérielle en milieu du travail...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Exploration d’un coup de chaleur d’exercice : est-il possible de geler la récidive ?
Publication date: Available online 30 May 2018Source: Science & SportsAuthor(s): S. Marchetti, S. Beighau, B. Lavenir, A. Jouvion, L. Thefenne, E. SaguiRésuméObjectifLe coup de chaleur d’exercice est une pathologie potentiellement mortelle pouvant récidiver dans 10 à 12 % des cas. Cette étude prospective sur deux ans avait pour but de quantifier le taux de récidive du coup de chaleur d’exercice après exploration protocolisée au sein des armées.Matériels et méthodesAprès un premier coup de chaleur d’exercice, ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Development of specific tests in bike-trials riders and relationship with jumping ability
ConclusionThe field tests as well as the bike specific tests showed to be selective and discriminant for the biketrial rider's. Jumping ability appears to be very important in order to achieve the elite level.RésuméObjectifL’objectif de cette étude était d’une part, de mettre sur pied une batterie de tests de terrain permettant d’évaluer les qualités musculaires et spécifiques des trialistes et d’autre part, d’analyser leurs caractères discriminants en comparant les performances des pilotes d’élite avec les pilotes amateurs.M...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Speed-endurance training effect on aerobic capacity of basketball players
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): Juan M. Ramírez (Source: Science and Sports)
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Balance des substrats à l’exercice déterminée par calorimétrie d’effort chez des patientes entreprenant un réentraînement après traitement d’un cancer mammaire
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): G. Marinari, C. Espitalier-Rivière, C. Fédou, A.-J. Romain, J.-F. BrunRésuméL’activité physique (AP) est un élément très important de la prise en charge du cancer du sein (CDS) en complément de l’approche carcinologique. Elle diminue la mortalité, toutes causes confondues, de ces patientes. L’AP modérée s’est avérée tout particulièrement intéressante dans ce contexte, ce qui peut suggérer que le ci...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Artefactual incidence of V˙O2 plateau and V˙O2max in historical studies
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): Rachel Barr, Cain C.T. Clark, Jo Corbett, Stephen B. DraperSummaryPurposeContemporary understanding of the time course of oxygen uptake suggests that traditional discontinuous tests are of insufficient duration to elicit a fully developed V˙O2 response. However, this remains to be empirically demonstrated. Thus, the aims of the present study were: (1) to investigate whether early V˙O2max assessments underestimated actual V˙O2, and (2) to investigate whether the apparent V˙O2 plateau observed in classic studies was an artefact of measu...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Suture à ciel ouvert du tendon d’Achille : récupération fonctionnelle au long cours
The objective of our study is to evaluate the functional recovery at one year of recoil after open suture of the Achilles tendon with the Achilles’ Traumatic Rupture Score.Material and methodsThis was a retrospective monocentric study of the 53 consecutive patients who had surgically treated open-cast traumatic Achilles tendon rupture between 2010 and 2016 at Clermont-Ferrand University Hospital. The primary endpoint was at least one year of functional recovery evaluated by the Achilles Tendon Rupture Score (ATRS). Secondary endpoints included time to recovery, sports recovery, surgical time, scarring,...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Analyse d’articles
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): (Source: Science and Sports)
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Agenda
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): (Source: Science and Sports)
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Editorial Board
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): (Source: Science and Sports)
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Stratégies de l’échauffement sportif à l’entraînement et en compétition
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): A. BoudenotRésuméObjectifsProposer une construction de l’échauffement précédant l’entraînement et de l’échauffement précédant l’épreuve de la compétition.ActualitésAlors que l’échauffement constitue un rituel de la préparation à l’effort, qu’il fait partie intégrante de la séance, il n’est pas toujours utilisé à bon escient à l’entraînement et...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Should resistance training programs aimed at muscular hypertrophy be periodized? A systematic review of periodized versus non-periodized approaches
ConclusionBased on the results of our review, we conclude that similar hypertrophic effects may be achieved using either a PER or a NP approach. Importantly, the findings are specific to short-term training interventions, as the average duration of programs across studies amounted to ∼15 weeks; and to untrained individuals, as only two studies involved resistance-trained participants. A limitation of the reviewed literature also pertains to the small number of studies (n = 3) using direct measures of hypertrophy (i.e., magnetic resonance imaging or ultrasound). Further research is needed to fill in the g...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Injuries in French and Chinese regular badminton players
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): A. Herbaut, J. Delannoy, M. FoissacSummaryObjectiveEpidemiological studies examined injuries in European and Asian badminton players but no study directly compared these 2 populations. Therefore, the objective of this study was to examine whether differences existed between French and Chinese regular badminton players (RBP) in terms of injury.MethodsAn online questionnaire was completed by 113 French and 117 Chinese RBP. The two populations were matched for distribution of genders, ages, skill levels and badminton exposure. Chi-square tes...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Endurance training and LXR activation increased LXRα and ABCA1 transcripts in Wistar male rats
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): F. Kazeminasab, S.M. Marandi, K. Ghaedi, F. Esfarjani, J. MoshtaghianSummaryPurposeLXR, belongs to the ligands activated transcription factors, regulates the expression of genes in cholesterol homeostasis. The aim of the present study was to examine combinatory effects of selective LXR activator-T0901317 and training on gene expression profiles of LXRα and ABCA1.Material and methodsTo examine simultaneous effects of selective LXR activator-T0901317- and exercise on LXRα and ABCA1 genes expression and lipids profile, Wistar mal...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Injuries in martial arts and combat sports: Prevalence, characteristics and mechanisms
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): F.B. Del Vecchio, C.B. Farias, R.C. de Leon, A.C.C.A. Rocha, L.M. Galliano, V.S. CoswigSummaryObjectiveTo measure sports injuries prevalence, types and mechanisms, considering grappling and impact modalities.Equipment and methodsAn observational, descriptive epidemiology study was conducted involving 125 recreational practitioners. Subjects were inquired regarding the type of martial arts and combat sports (MACS), age, practice time and weekly training volume.ResultsFrom all, 53.6% athletes suffered injury in the last 12 months. The most ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

The effect of changes in concentric-eccentric contraction time ratio on hormonal response to resistance exercise in trained men
ConclusionsThe result of this study showed that in a single session of RE, changes in concentric-eccentric contraction time ratio had no effect on hormonal response, however slower contractions produced greater hormonal response compare to normal protocol.RésuméObjectifsLe but de cette étude était d’étudier l’effet, sur la réponse hormonale d’hommes entraînés, du changement temps de contraction concentrique-excentrique.MéthodesDix jeunes hommes (âge moyen : 26,3 ± 1,2 années, poids moyen : 81,2&...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effects of exhaustive exercises, with different intensities, on oxidative stress markers in rat plasma and skeletal muscle
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): T. Kawamura, R. Fujii, X. Li, K. Higashida, I. MuraokaSummaryObjectivesThe purpose of this study was to examine the effects of exhaustive exercises, with different intensities, on oxidative stress markers in rat plasma and skeletal muscle.MethodsMale Sprague-Dawley rats (n = 24) were randomly divided into the following four groups: control (CON), low-intensity exercise (LE), high-intensity interval exercise (HE) and incremental exercise (IE). The animals in the latter three groups performed exercises in which they ran until exha...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effects of unilateral, bilateral movement and combined exercise using a ski simulator on lower limb joint and muscle activities
This study was conducted to closely examine the effects of representative types of lower limb flexion and extension exercises (unilateral and bilateral exercises) and the combined exercise using a ski simulator on lower limb joint and muscle activities.Equipment and methodsIn the experiments of this study performed on 20 participants, lower limb joint angles and muscle activities were measured during unilateral (lunge), bilateral (squat), and combine (ski simulator) using a 3D motion capture and electromyography analysis system.ResultsAnalysis of the measurement results revealed that unilateral exercises required more time...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

High-intensity interval body weight training promotes different adaptations to combined training in body composition and muscle strength in young women
In this study, 25 women were randomly allocated into two groups: HIBWT (n = 10) and COMT (n = 15). The HIBWT group performed a training protocol (length time ∼ 20 min) consisting of ten sets of 60 s of high intensity exercise (30 s of stepping up and down on a step and 30s of squatting up and down with body weight as fast as possible) interspersed by a recovery period of 60 s of low intensity exercise. The COMT group performed a training protocol (length time ∼ 60-min) consisting of a 30 min walk of moderate intensity following by five resistance exercises (three sets of...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Effets d’un programme d’exercices physiques structurés sur les facteurs de risque cardiovasculaire liés au syndrome métabolique chez les travailleurs obèses de Kinshasa en République démocratique du Congo
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): G. Kusuayi Mabele, C. Nkiama Ekisawa, C. Delecluse, F. Lepira Bompeka, A. Nkodila MatuhoyilaRésuméObjectifRechercher l’effet d’un programme d’exercices structurés combinés à une éducation nutritionnelle sur les facteurs de risque cardiovasculaire liés au syndrome Métabolique chez les travailleurs obèses.MéthodesDans une étude de suivi d’une durée de 6 mois, entre janvier et juin 2014, 157 obèses dont 76 hommes ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Change in marker of hydration correspond to decrement in lower body power following basketball match
Publication date: June 2018Source: Science & Sports, Volume 33, Issue 3Author(s): F. Díaz-Castro, S. Astudillo, J. Calleja-González, H. Zbinden-Foncea, R. Ramirez-Campillo, M. Castro-SepúlvedaSummaryBackgroundMuscle damage and dehydration are common during basketball matches, but their relationship with performance in this sport is unclear. The aim of this study was to correlate changes in muscle damage (creatine kinase), hydration status (Na+; K+; body mass), and lower body power (countermovement jump) occurring in young athletes during a basketball competition.MethodsFourteen basketball-players (...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Continuous glucose monitoring of a runner during five marathons
ConclusionCGM is a useful tool for monitoring glucose fluctuation during long distance running. These data would be helpful as a pilot study to understand glucose metabolism and performance during endurance exercises.RésuméIntroductionDe nos jours, avec l’explosion de la course à pied, de nombreux coureurs allant de l’athlète de haut niveau à l’amateur apprécient le marathon. Comprendre les fluctuations du taux de glucose durant un marathon permettrait de discuter et concevoir les performances et l’intensité des exercices. Peu d’études on...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Test-retest reliability and convergent validity of the Ruffier Index in children under 12 years old
ConclusionThe findings of this study indicate that the RI shows a “poor” test-retest reliability and a convergent validity ranging from “acceptable” to “poor”, when administered to children under 12 years of age.RésuméObjectif pour identifier la fiabilité test-retest et la validité convergente du test de Ruffier sur des enfants.MéthodeUn total de 352 participants (âge moyen 10,14 ± 1,02 ans; 47,2% filles) ont effectué le test de Ruffier deux fois, avec un intervalle d’une semaine entre les deux évalua...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Acute cardiovascular responses to resistance exercise in anabolic steroids users: A preliminary investigation
Publication date: Available online 2 July 2018Source: Science & SportsAuthor(s): P.J. Angell, D.J. Green, R. Lord, D. Gaze, G. Whyte, K.P. GeorgeSummaryObjectivesAnabolic steroid (AS) use has increased in recent years, but the cardiovascular consequences for users is not fully understood.Equipment and MethodsResistance trained males (AS = 7, age = 29 ± 5; NAS = 6, age = 25 ± 1 yrs) undertook a resistance exercise session with echocardiographic measures and cardiac biomarkers taken pre and post exercise (cTnI, NT-proBNP).ResultsA significant ...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Awareness and education about cardiovascular events and sport are essential: Results of a French multicenter survey
This study assessed the lack of awareness of cardiovascular risk factors and behaviors in the general sporting population.MethodsA survey was conducted by questionnaire in 3590 regular sports practitioners in 6 sport medicine centers.ResultsAmong the 3590 practitioners, mean age was 30.7 ±  16 years, 71% were men, 9.5% were smokers, 5.5% had hypercholesterolemia, 4.4% had high blood pressure and 0.9% were diabetics. In subjects  40 years old, only 54% had undergone a pre-participation exercise test. Among the entire sample, 17% were not aware of the danger of smoking before and jus...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research

Évaluation des effets à court terme de deux techniques d’étirements actifs réalisés lors de l’échauffement, sur les antioxydants enzymatiques suite à un effort anaérobie : étude Pilote
ConclusionCe type d’étude peut mettre en évidence l’importance des étirements lors d’échauffement.SummaryAimsSince several years, the practice of active stretching has largely expanded. However, no study has been carried out on the expected benefits of the free radical system. The aim of this research was to compare the effects of active-dynamic stretching and myotendinous active stretching on the evolution of enzymatic antioxidant concentrations following the Wingate test.MethodsFourteen active subjects playing mini-football, who underwent the Wingate test following a standard...
Source: Science and Sports - July 11, 2018 Category: Sports Medicine Source Type: research