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Musculoskeletal profile of amateur combat athletes / Luke Del Vecchio in Science & motricité, 113 ([23/11/2021])

Public ISBD [article]  inScience & motricité > 113 [23/11/2021] . - p. 1-9 Titre : Musculoskeletal profile of amateur combat athletes : bodycomposition, muscular strength and striking power Type de document : texte imprimé Auteurs : Luke Del Vecchio ; Nattai Borges Année de publication : 2021 Article en page(s) : p. 1-9 Note générale : 2021https://doi.org/10.1051/sm/2021004Science Langues : Français (fre) Mots-clés : muscular balance  mixed martial arts  bone density  lean muscle  punch  kick Résumé : Previous research highlighted positive musculoskeletal adaptations resulting frommechanical forces and loadings distinctive to impacts and movements with sports participation. However, littleis known about these adaptations in combat athletes. The aim of this study was to quantify bone mineraldensity, lean muscle mass and punching and kicking power in amateur male combat athletes.Methods:Thirteen male combat athletes (lightweight and middleweight) volunteered all physiological tests includingdual energy X-ray absorptiometry for bone mineral density (BMD) segmental body composition (lean musclemass, LMM), muscle strength and striking power, sedentary controls (n= 15) were used for selected DXAoutcome variables.Results:There were significant differences (p<0.05) between combat groups for lumbarspine (+5.0%), dominant arm (+4.4%) BMD, and dominant and non-dominant leg LMM (+21.8% and+22.6%). Controls had significantly (p<0.05) high adiposity (+36.8% relative), visceral adipose tissue (VAT)mass (+69.7%), VAT area (+69.5%), lower total body BMD ( 8.4%) and lumbar spine BMD ( 13.8%) thancontrols. No differences in lower limb BMD were seen in combat groups. Arm lean mass differences (dominantversusnon-dominant) were significantly different between combat groups (p<0.05, 4.2%versus7.3%). Therewere no differences in punch/kick power (absolute or relative) between combat groups. 5RM strength (benchand squat) correlated significantly with upper limb striking power (r= 0.57), dominant and non-dominant legBMD (r= 0.67,r= 0.70, respectively) and total body BMD (r= 0.59).Conclusion:BMD and LMM appear tobe particularly important to discriminate between dominant and non-dominant upper limbs and less so forlower limb dominance in recreational combat athletes. Permalink : ./index.php?lvl=notice_display&id=97284 [article] Musculoskeletal profile of amateur combat athletes : bodycomposition, muscular strength and striking power [texte imprimé] / Luke Del Vecchio ; Nattai Borges . - 2021 . - p. 1-9. 2021https://doi.org/10.1051/sm/2021004Science Langues : Français (fre) in Science & motricité > 113 [23/11/2021] . - p. 1-9 Mots-clés : muscular balance  mixed martial arts  bone density  lean muscle  punch  kick Résumé : Previous research highlighted positive musculoskeletal adaptations resulting frommechanical forces and loadings distinctive to impacts and movements with sports participation. However, littleis known about these adaptations in combat athletes. The aim of this study was to quantify bone mineraldensity, lean muscle mass and punching and kicking power in amateur male combat athletes.Methods:Thirteen male combat athletes (lightweight and middleweight) volunteered all physiological tests includingdual energy X-ray absorptiometry for bone mineral density (BMD) segmental body composition (lean musclemass, LMM), muscle strength and striking power, sedentary controls (n= 15) were used for selected DXAoutcome variables.Results:There were significant differences (p<0.05) between combat groups for lumbarspine (+5.0%), dominant arm (+4.4%) BMD, and dominant and non-dominant leg LMM (+21.8% and+22.6%). Controls had significantly (p<0.05) high adiposity (+36.8% relative), visceral adipose tissue (VAT)mass (+69.7%), VAT area (+69.5%), lower total body BMD ( 8.4%) and lumbar spine BMD ( 13.8%) thancontrols. No differences in lower limb BMD were seen in combat groups. Arm lean mass differences (dominantversusnon-dominant) were significantly different between combat groups (p<0.05, 4.2%versus7.3%). Therewere no differences in punch/kick power (absolute or relative) between combat groups. 5RM strength (benchand squat) correlated significantly with upper limb striking power (r= 0.57), dominant and non-dominant legBMD (r= 0.67,r= 0.70, respectively) and total body BMD (r= 0.59).Conclusion:BMD and LMM appear tobe particularly important to discriminate between dominant and non-dominant upper limbs and less so forlower limb dominance in recreational combat athletes. Permalink : ./index.php?lvl=notice_display&id=97284

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A systematic review of sweet potato-derived nutritional products for athletes / Kinga Kostrakiewicz-Giera in Science & motricité, 113 ([23/11/2021])

Public ISBD [article]  inScience & motricité > 113 [23/11/2021] . - p. 11-26 Titre : A systematic review of sweet potato-derived nutritional products for athletes Type de document : texte imprimé Auteurs : Kinga Kostrakiewicz-Giera Année de publication : 2021 Article en page(s) : p. 11-26 Note générale : https://doi.org/10.1051/sm/2021011 Langues : Français (fre) Mots-clés : anthocyanins  food  health  Ipomoea batatas  performance Résumé : The sweet potato (Ipomoea batatasL. Lamarck syn.Convolvulus batatasL.) is a perennial,herbaceous climber with tuberous edible roots, and is a major leguminous crop of global importance withwidespread applicability and economic value of its products in the global market. The aim of the presentedinvestigations was to review the experimental articles and patents referring to the application of sweet potato-based nutritional products for athletes published in the period 2000–2020. Altogether, 69 patents and12 experimental articles were included in the analysis. The statistical analysis showed that similar number ofinventions was patented in periods 2000–2005, 2006–2010, 2011–2015 and 2016–2020. Generally, the inventorspatented food supplements in different forms (e.g.bars, beverages, powders, snacks, tablets). Other authorsinvented methods of extraction and application of sweet potato constituents such as carbohydrates (i.a.slowlydigestible starch) and polyphenols (i.a.anthocyanins). The empirical articles evidenced wide acceptability ofsweet potato products due to their beneficial effects on health and performance such as improvement ofcardiopulmonatory functions, prolongation of physical performance and recovery from fatigue. Despite growinginterest in the application of sweet potato constituents in nutritional products for athletes, furtherinvestigations are highly desirable. Permalink : ./index.php?lvl=notice_display&id=97285 [article] A systematic review of sweet potato-derived nutritional products for athletes [texte imprimé] / Kinga Kostrakiewicz-Giera . - 2021 . - p. 11-26. https://doi.org/10.1051/sm/2021011 Langues : Français (fre) in Science & motricité > 113 [23/11/2021] . - p. 11-26 Mots-clés : anthocyanins  food  health  Ipomoea batatas  performance Résumé : The sweet potato (Ipomoea batatasL. Lamarck syn.Convolvulus batatasL.) is a perennial,herbaceous climber with tuberous edible roots, and is a major leguminous crop of global importance withwidespread applicability and economic value of its products in the global market. The aim of the presentedinvestigations was to review the experimental articles and patents referring to the application of sweet potato-based nutritional products for athletes published in the period 2000–2020. Altogether, 69 patents and12 experimental articles were included in the analysis. The statistical analysis showed that similar number ofinventions was patented in periods 2000–2005, 2006–2010, 2011–2015 and 2016–2020. Generally, the inventorspatented food supplements in different forms (e.g.bars, beverages, powders, snacks, tablets). Other authorsinvented methods of extraction and application of sweet potato constituents such as carbohydrates (i.a.slowlydigestible starch) and polyphenols (i.a.anthocyanins). The empirical articles evidenced wide acceptability ofsweet potato products due to their beneficial effects on health and performance such as improvement ofcardiopulmonatory functions, prolongation of physical performance and recovery from fatigue. Despite growinginterest in the application of sweet potato constituents in nutritional products for athletes, furtherinvestigations are highly desirable. Permalink : ./index.php?lvl=notice_display&id=97285

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Position-specific counter movement jump characteristics of elite Women’s Rugby World Cup 2017 athletes / Shane$ Heffernan in Science & motricité, 113 ([23/11/2021])

Public ISBD [article]  inScience & motricité > 113 [23/11/2021] . - p. 27-37 Titre : Position-specific counter movement jump characteristics of elite Women’s Rugby World Cup 2017 athletes Type de document : texte imprimé Auteurs : Shane$ Heffernan ; ross Neville Année de publication : 2021 Article en page(s) : p. 27-37 Note générale : https://doi.org/10.1051/sm/2021013 Langues : Français (fre) Mots-clés : jump kinematics  elite female athletes  power output Résumé : Rugby union (RU) is an intermittent team sport, with diverse playing positions, playedinternationally by both men and women. Considerable scientific attention has been devoted to men’s RU,however despite the growth in the women’s professional game, there is a significant lack of availablephysiological and normative data. The purpose of the present study was to investigate positional variation incountermovement jump characteristics from elite women’s RU players. Qualitative data were collected fromwomen’s Rugby World Cup (2017) competitors (n = 86; age: 27±5 years; body mass: 77.8±10.6 kg; height:1.69±0.07 cm) and jump data (countermovement jumps) were collected using a 1200 Hz force platform(n = 63). Athletes were divided into positional unit (backs: n = 39 and forwards: n = 47) and by positionalsubgroups. Backs had greater jump height (ES = 0.72, 95%CL±0.50), relative power output (ES = 0.84, 95%CL±0.50), relative force production (ES = 0.62, 95%CL±0.51) and reactive strength index (RSI; ES = 0.62,95%CL±0.50), compared to forwards (for all,P<0.02). Backrows, halves and back-three players had greaterrelative force, relative power and jump height, compared to the front and second rows (P<0.03; ES>0.70).These data could aid in programming for long-term player development in women’s RU and could haveimplications for“readiness”to compete at international level. Permalink : ./index.php?lvl=notice_display&id=97286 [article] Position-specific counter movement jump characteristics of elite Women’s Rugby World Cup 2017 athletes [texte imprimé] / Shane$ Heffernan ; ross Neville . - 2021 . - p. 27-37. https://doi.org/10.1051/sm/2021013 Langues : Français (fre) in Science & motricité > 113 [23/11/2021] . - p. 27-37 Mots-clés : jump kinematics  elite female athletes  power output Résumé : Rugby union (RU) is an intermittent team sport, with diverse playing positions, playedinternationally by both men and women. Considerable scientific attention has been devoted to men’s RU,however despite the growth in the women’s professional game, there is a significant lack of availablephysiological and normative data. The purpose of the present study was to investigate positional variation incountermovement jump characteristics from elite women’s RU players. Qualitative data were collected fromwomen’s Rugby World Cup (2017) competitors (n = 86; age: 27±5 years; body mass: 77.8±10.6 kg; height:1.69±0.07 cm) and jump data (countermovement jumps) were collected using a 1200 Hz force platform(n = 63). Athletes were divided into positional unit (backs: n = 39 and forwards: n = 47) and by positionalsubgroups. Backs had greater jump height (ES = 0.72, 95%CL±0.50), relative power output (ES = 0.84, 95%CL±0.50), relative force production (ES = 0.62, 95%CL±0.51) and reactive strength index (RSI; ES = 0.62,95%CL±0.50), compared to forwards (for all,P<0.02). Backrows, halves and back-three players had greaterrelative force, relative power and jump height, compared to the front and second rows (P<0.03; ES>0.70).These data could aid in programming for long-term player development in women’s RU and could haveimplications for“readiness”to compete at international level. Permalink : ./index.php?lvl=notice_display&id=97286

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Interest of inertial measurement unit tool in the functional evaluationof ankle evertor muscles in trail running / Jeanne Dury in Science & motricité, 113 ([23/11/2021])

Public ISBD [article]  inScience & motricité > 113 [23/11/2021] . - p. 39-44 Titre : Interest of inertial measurement unit tool in the functional evaluationof ankle evertor muscles in trail running Type de document : texte imprimé Auteurs : Jeanne Dury ; Fabrice Michel ; Gilles Ravier Année de publication : 2021 Article en page(s) : p. 39-44 Note générale : https://doi.org/10.1051/sm/2021014 Langues : Français (fre) Mots-clés : proprioception  kinematic  fatigue  ankle sprain risk factor  prevention Résumé : This study aimed to investigate the interest of inertial measurement units (IMU) in the functionalassessment of the ankle to identify sport specific adaptations and to determine whether a hilly run sessionaffected balance control and ability in accelerating eversion and slowing down inversion movements. Thirteenwell-trained trail runners and 12 cyclists completed ankle tests on a destabilized footwear device: one balance-control test and two dynamic inversion and eversion tests (involving eccentric, ECC and concentric, CONCmuscle regimens, respectively). Kinematic data derived from IMU were automatically calculated asperformance scores i) to compare trail runners and cyclists at rest, and ii) to determine the fatigue inducedby hilly run (16 km, 400 D+) in trail runners. Both ECC and CONC scores derived from angular velocity oftwenty repetitions (with threshold of 60°/s and 250°/s, respectively) during dynamic tests. Results showedhigher ECC score (CV = 14.6%;p= 0.06; ES = moderate) and lower CONC score (CV = 33.8%;p<0.01;ES = large) in trail runners than in cyclists. Furthermore, proprioception score decreased in response to the hillyrun session (CV = 6.1%;p= 0.03; ES = moderate). Kinematic data emphasized sport specific adaptations inthe ability to control eversion and inversion movements. This might suggest differences in evertor musclestrength characteristics. Decrement in the proprioception score highlighted the interest of using IMU in theassessment of acute fatigue induced by hilly run. Permalink : ./index.php?lvl=notice_display&id=97287 [article] Interest of inertial measurement unit tool in the functional evaluationof ankle evertor muscles in trail running [texte imprimé] / Jeanne Dury ; Fabrice Michel ; Gilles Ravier . - 2021 . - p. 39-44. https://doi.org/10.1051/sm/2021014 Langues : Français (fre) in Science & motricité > 113 [23/11/2021] . - p. 39-44 Mots-clés : proprioception  kinematic  fatigue  ankle sprain risk factor  prevention Résumé : This study aimed to investigate the interest of inertial measurement units (IMU) in the functionalassessment of the ankle to identify sport specific adaptations and to determine whether a hilly run sessionaffected balance control and ability in accelerating eversion and slowing down inversion movements. Thirteenwell-trained trail runners and 12 cyclists completed ankle tests on a destabilized footwear device: one balance-control test and two dynamic inversion and eversion tests (involving eccentric, ECC and concentric, CONCmuscle regimens, respectively). Kinematic data derived from IMU were automatically calculated asperformance scores i) to compare trail runners and cyclists at rest, and ii) to determine the fatigue inducedby hilly run (16 km, 400 D+) in trail runners. Both ECC and CONC scores derived from angular velocity oftwenty repetitions (with threshold of 60°/s and 250°/s, respectively) during dynamic tests. Results showedhigher ECC score (CV = 14.6%;p= 0.06; ES = moderate) and lower CONC score (CV = 33.8%;p<0.01;ES = large) in trail runners than in cyclists. Furthermore, proprioception score decreased in response to the hillyrun session (CV = 6.1%;p= 0.03; ES = moderate). Kinematic data emphasized sport specific adaptations inthe ability to control eversion and inversion movements. This might suggest differences in evertor musclestrength characteristics. Decrement in the proprioception score highlighted the interest of using IMU in theassessment of acute fatigue induced by hilly run. Permalink : ./index.php?lvl=notice_display&id=97287

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Les techniques instrumentales de mesure de la force musculaire et dela balance musculaire / Maryne Cozette in Science & motricité, 113 ([23/11/2021])

Public ISBD [article]  inScience & motricité > 113 [23/11/2021] . - p. 45-53 Titre : Les techniques instrumentales de mesure de la force musculaire et dela balance musculaire : le point sur la technologie isocinétique Type de document : texte imprimé Auteurs : Maryne Cozette, Auteur ; P.-M. Leprêtre, Auteur Année de publication : 2021 Article en page(s) : p. 45-53 Note générale : https://doi.org/10.1051/sm/2021016 Langues : Français (fre) Mots-clés : couple  évaluation  isométrique  inertielle  isocinétique Résumé : Le rapport de force entre les muscles agonistes et antagonistes est un paramètre déterminant pour la motricité, mais aussi pour le maintien de la stabilité articulaire au cours du mouvement. La stabilisation dynamique d’une articulation est une notion fondamentale dans le cadre de la performance, de la prévention, mais aussi de la rééducation. Plusieurs techniques permettent de quantifier la force musculaire en fonction de la modalité de contraction du muscle. On distingue les évaluations isométriques, inertielles, et isocinétiques. Parmi ces techniques, les évaluations isocinétiques semblent être les plus pertinentes pour apprécier l’équilibre de force entre les muscles agonistes et antagonistes tout en considérant les propriétés mécaniques du muscle in situ. Malgré tout, la technique isocinétique, telle qu’elle est utilisée, présente certaines limites, notamment liées à l’utilisation exclusive du pic de force. Permalink : ./index.php?lvl=notice_display&id=97292 [article] Les techniques instrumentales de mesure de la force musculaire et dela balance musculaire : le point sur la technologie isocinétique [texte imprimé] / Maryne Cozette, Auteur ; P.-M. Leprêtre, Auteur . - 2021 . - p. 45-53. https://doi.org/10.1051/sm/2021016 Langues : Français (fre) in Science & motricité > 113 [23/11/2021] . - p. 45-53 Mots-clés : couple  évaluation  isométrique  inertielle  isocinétique Résumé : Le rapport de force entre les muscles agonistes et antagonistes est un paramètre déterminant pour la motricité, mais aussi pour le maintien de la stabilité articulaire au cours du mouvement. La stabilisation dynamique d’une articulation est une notion fondamentale dans le cadre de la performance, de la prévention, mais aussi de la rééducation. Plusieurs techniques permettent de quantifier la force musculaire en fonction de la modalité de contraction du muscle. On distingue les évaluations isométriques, inertielles, et isocinétiques. Parmi ces techniques, les évaluations isocinétiques semblent être les plus pertinentes pour apprécier l’équilibre de force entre les muscles agonistes et antagonistes tout en considérant les propriétés mécaniques du muscle in situ. Malgré tout, la technique isocinétique, telle qu’elle est utilisée, présente certaines limites, notamment liées à l’utilisation exclusive du pic de force. Permalink : ./index.php?lvl=notice_display&id=97292

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