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Journal of Sports Medicine and Physical Fitness

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https://www.readbyqxmd.com/read/29148630/men-exhibit-greater-fatigue-resistance-than-women-in-alternated-bench-press-and-leg-press-exercises
#1
Estêvão R Monteiro, James Steele, Jefferson S Novaes, Amanda F Brown, Mark T Cavanaugh, Jakob L Vingren, David G Behm
BACKGROUND: The purpose of this study was to evaluate the influence of sex, exercise order, and rest interval on neuromuscular fatigue resistance for an alternated strength training sequence of bench press (BP) and leg press (LP) exercises. METHODS: Twelve women and 16 men, both recreationally trained, performed four sessions in a random order: 1) BP followed by LP with three-minutes rest (BP+LP with rest), 2) LP followed by BP with three-minutes rest (LP+BP with rest), 3) BP followed by LP without rest interval (BP+LP no rest), and 4) LP followed by BP without rest interval (LP+BP no rest)...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148629/carbohydrate-mouth-rinse-improves-cycling-performance-carried-out-until-the-volitional-exhaustion
#2
Bruno Bavaresco Gambassi, Ylana Gomes de Santana Barros Leal, Edson R Pinheiro Dos Anjos, Bruna A Antonelli, Daniela C Gomes Gonçalves E Silva, Iracema H Pires de Mélo Montenegro, Rita di Cássia de Oliveira Angelo, Isis S Correia Moura, Paulo A Schwingel
BACKGROUND: Carbohydrates (CHO) are among the most investigated nutritional ergogenic aids, and may be consumed in different forms, e.g., mouth rinse with carbohydrate solution (MRCS). In this sense, the aim of this study was to evaluate the impact of MRCS on the performance of physically active individuals undergoing a physical exercise session carried out until the volitional exhaustion. METHODS: This is a counter-balanced randomized study, with a double-blind design...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148628/clinical-significance-of-st-depression-at-exercise-stress-testing-in-competitive-athletes-usefulness-of-coronary-ct-during-screening
#3
Fabio Sperandii, Emanuele Guerra, Eliana Tranchita, Carlo Minganti, Chiara Lanzillo, Antonia Nigro, Federico Quaranta, Attilio Parisi, Mauro DI Roma, Luciano Maresca, Federica Fagnani, Leonardo Calò
BACKGROUND: Congenital coronary anomalies (CCAs) and coronary artery disease (CAD) arouse intense scientific and clinical interest in sports medicine and sports cardiology medical communities because of their potential to trigger sudden cardiac death (SCD) in athletes. Exercise stress testing represent the first instrumental assessment to evaluate electrocardiographic changes during effort. Coronary computed tomography angiography (CCTA) is an advanced accurate noninvasive imaging modality for excluding CAD and abnormalities of origin and course of coronary vessels...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148627/assessment-of-endpoint-criteria-and-perceived-barriers-during-maximal-cardiorespiratory-fitness-testing-among-pregnant-women
#4
Caitlin M Hesse, Rachel A Tinius, Bailey J Cooley, Alyssa A Olenick, Maire M Blankenship, Donald L Hoover, Jill M Maples
BACKGROUND: A plateau in volume of oxygen consumption (VO2) is the primary indicator for determining if an individual has reached their maximal aerobic capacity. However, secondary criteria can also be used to identify maximal effort (i.e. lactate level, rating of perceived exertion (RPE), percent of age-predicted maximal heart rate (HR) and respiratory exchange ratio (RER)). Age and gender-specific secondary criteria have been developed for the general population, but no secondary criteria have been established for pregnant women...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148626/effects-of-detraining-on-breathing-pattern-and-ventilatory-efficiency-in-young-soccer-players
#5
José R Alvero Cruz, Mauro Ronconi, Jerónimo Garcia Romero, José Naranjo Orellana
BACKGROUND: This study investigated the effects of detraining on breathing pattern. The aim of this study was to evaluate the effect of a sixweek detraining period on breathing patterns and ventilatory efficiency. METHODS: Fourteen young soccer players were evaluated at the end of a competitive season and after a sixweek detraining period. Assessment of respiratory efficiency was based on VE/VCO2 slope changes below 70% of exercise intensity. All participants underwent twice an incremental graded exercise test up to exhaustion...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148625/evaluation-of-anabolic-steroid-induced-renal-damage-with-sonography-in-bodybuilders
#6
Umut H Kantarci, Zekine Punduk, Omer Senarslan, Alper Dirik
BACKGROUND: The aim of this study was to investigate the effect of anabolic steroids on kidneys in bodybuilders. METHODS: Twenty two bodybuilders were included in the study. Participants were divided into three groups according to the scheme of steroid usage: Group 1 (n=8, intramuscular 500 mg testosterone enanthate, intramuscular 400 mg nandrolone decanoate and oral 40 mg methandrostenolone for 12 weeks), Group 2 (n=7, intramuscular 500 mg testosterone enanthate, intramuscular 300 mg nandrolone decanoate and intramuscular 300 mg boldenone undecylenate for 16 weeks) and Group 3 (n=7, no steroid intake)...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111632/rating-of-perceived-capacity-a-proposal-to-predict-adequate-levels-of-physical-activity-in-visually-impaired-individuals
#7
Diego G Barbosa, Rubian D Andrade, Andreia Pelegrini, Érico P Felden
BACKGROUND: There are several instruments that are generally used to analyze levels of physical activity (PA) in people with visual impairment. However, few instruments are validated for this population.The purpose of this study was to compare the subjective and objective variables of PA and to propose the use of the Rating of Perceived Capacity (RPC) to evaluate the level of moderate to vigorous physical activity (MVPA) per day in this population. METHODS: Thirty-seven individuals with visual impairment participated in the study (19 blind without light perception and 18 low-vision)...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111631/physical-performance-characteristics-between-male-and-female-youth-surfing-athletes
#8
Bruno A Ferreira da Silva, Filipe M Clemente
BACKGRAUND: Despite some knowledge about the fitness levels of elite surfers, there is limited published research examining gender differences, particularly in young athletes. The purpose of this study was to describe and compare the sex differences in physical performance characteristics of elite youth surfers. It was also aimed to study the association between physical performance variables. METHODS: This longitudinal prospective study was based on a total of twenty male and female youth surfers performed a battery of physical performance tests: anthropometrics, weight-bearing dorsiflexion test, Functional Movement Screen, lower extremity dynamic stability, lower limb dynamic strength, paddling and apnea test...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111630/anthropometric-profile-of-combat-athletes-via-multivariate-analysis
#9
Anna Burdukiewicz, Jadwiga Pietraszewska, Aleksandra Stachoń, Justyna Andrzejewska
BACKGROUND: Athletic success is a complex phenotype influenced by multiple factors, from sport-specific skills to anthropometric characteristics. Considering the latter, the literature has repeatedly indicated that athletes possess distinct physical characteristics depending on the practiced discipline. The aim of the present study was to apply univariate and multivariate methods to assess a wide range of morphometric and somatotypic characteristics in male combat athletes. METHODS: Biometric data were obtained from 206 male university-level practitioners of judo, jiu-jitsu, karate, kickboxing, taekwondo, and wrestling...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111629/effects-of-muay-thai-training-frequency-on-body-composition-and-physical-fitness-in-healthy-untrained-women
#10
Jeniffer A de S Rapkiewicz, João P Nunes, Jerry L Mayhew, Alex Silva Ribeiro, Hellen C Garcez Nabuco, Maria T Fávero, Emerson Franchini, Matheus Amarante do Nascimento
BACKGROUND: The purpose of the study was to compare the effects of different frequencies of Muay Thai training on body composition, and physical fitness in healthy untrained women. METHODS: Twenty women were randomly assigned to one of two training groups: G2X (n = 9) performed Muay Thai twice a week, while G3X (n = 11) performed the same program three times a week, both for 13 weeks. Anthropometric dimensions, fat-free mass, fat mass, resting metabolic rate, VO2 max, upper-body and abdominal muscle endurance, explosive leg power, agility, flexibility, and dietary intake were measured at pre and post-training...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111628/comparison-of-body-fat-percentage-of-male-soccer-players-of-different-competitive-levels-playing-positions-and-age-groups-a-meta-analysis
#11
Maamer Slimani, Hela Znazen, Amri Hammami, Nicola L Bragazzi
INTRODUCTION: The aim of the present meta-analysis was to compare the body fat percentage (%) between male soccer players of different competitive levels, playing positions and age groups. EVIDENCE ACQUISITION: The systematic search was conducted using different databases and according to the Population/Intervention or Exposure/Comparison/Outcome(s) [PICO] criteria. EVIDENCE SYNTHESIS: Higher % values of body fat in lower-level soccer players than higher-level counterparts (ES=0...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111627/quantification-of-bowling-workload-and-changes-in-cognitive-function-in-elite-fast-bowlers-in-training-compared-with-twenty20-cricket
#12
Jamie Tallent, Matthew Higgins, Nick Parker, Mark Waldron, Eoin Bradford, James Keenan, Barry V O'Neill
BACKGROUND: Bowling overs are the primary recorded measure for workloads in cricket for youth through to professionals. However, the validity of this measure has never been tested. Additionally, despite the cognitive component of cricket being suggested to be very high, changes in psychomotor processing speed has again not been explored. METHODS: Eight professional English county cricket bowlers participated in the study. Participants wore global positioning systems with a tri-axial accelerometer during a Twenty20 match and training...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111626/technical-tactical-and-movement-analysis-of-men-s-professional-tennis-on-hard-courts
#13
Rafael Martínez-Gallego, José F Guzmán, Miguel Crespo, Jesús Ramón-Llin, Goran Vučković
BACKGROUND: There is very little information in tennis relating performance to both the movement of the players and the effectiveness of their shots. This study aimed to identify differences between winners and losers in the volume and intensity of their movements, as well as in the effectiveness of their shots. METHODS: Matches (N = 8) at the 2011 ATP 500 tournament in Valencia (Spain) were recorded and analysed using SAGIT, a computerised vision-tracking system...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29111625/performance-and-reliability-of-the-y-balance-testtm-in-high-school-athletes
#14
Laura J Smith, James R Creps, Ryan Bean, Becky Rodda, Bara Alsalaheen
BACKGROUND: Lower extremity injuries account for 32.9% of the overall injuries in high school athletes. Previous research has suggested that asymmetry greater than 4cm using the Y-Balance TestTM Lower Quarter (YBT-LQ) in the anterior direction is predictive of non- contact injuries in adults and collegiate athletes. The prevalence of asymmetries or abnormal YBT-LQ performance is not well documented for adolescents. The primary purposes of this study are: 1) to characterize the prevalence of YBT-LQ asymmetries and performance in a cross-sectional sample of adolescents, 2) to examine possible differences in performance on the YBT-LQ between male and female adolescents, and 3) to describe the test-retest reliability of the YBT-LQ in a subsample of adolescents...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29087138/comprehensive-profile-of-hip-knee-and-ankle-ranges-of-motion-in-professional-football-players
#15
Alejandro López-Valenciano, Francisco Ayala, Francisco J Vera-García, Mark de Ste Croix, Sergio Hernández-Sánchez, Iñaki Ruiz-Pérez, Antonio Cejudo, Fernando Santonja
BACKGROUND: Limited ranges of motion (ROM) have been considered as a primary risk factor for some football injuries, but only a few studies have analysed differences in lower extremity joints. The main purposes were (a) to describe the lower extremity ROM profile in professional football players; and (b) to examine differences between goalkeepers and outfield players. METHODS: 82 professional male football players from 4 teams were measured in the 2013 pre-season...
October 31, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29083130/effects-of-mat-pilates-training-and-habitual-physical-activity-on-thoracoabdominal-expansion-during-quiet-and-vital-capacity-breathing-in-healthy-women
#16
Jeniffer L Campos, Rodrigo L Vancini, Graziely R Zanoni, Claudio A Barbosa DE Lira, Marilia Santos Andrade, Karine J Sarro
BACKGROUND: Pilates is a body/mind method that requires different types of exercise (balance, endurance, strength, and flexibility) and attention to muscle control, posture, and breathing. The aim of the present study was to investigate the effects of 12 weeks of Mat Pilates training and habitual physical activity on thoracoabdominal motion of healthy and physically active women. METHODS: Thirty-five women without experience in Pilates exercise, aged between 18 and 35 years, participated in the study (habitual physical activity group, n=14; and Mat Pilates group, n=21)...
October 27, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29083129/fractures-in-german-elite-male-soccer
#17
Erik Schiffner, David Latz, Jan P Grassmann, Alberto Schek, Armin Scholz, Joachim Windolf, Pascal Jungbluth, Johannes Schneppendahl
INTRODUCTION: Aim of this retrospective cohort study was to identify fracture epidemiology and off times after different types of fractures in German male elite soccer players from the first division Bundesliga based on information from the public media. METHODS: Exposure and fracture data over 7.5 consecutive seasons (2009/10 -1.Half 2016/17) were collected from two media based register (transfermarkt.de® and kicker.de®). RESULTS: 357 fractures from 290 different players were recorded with an incidences of 0...
October 27, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29083128/acute-neuromuscular-cognitive-and-physiological-responses-to-a-japanese-kickboxing-competition-in-semi-professional-fighters
#18
Giuseppe Cimadoro
BACKGROUND: Japanese kickboxing is a combat sport designed to accommodate fighters from different combat sports styles. However, the physiological profile of this discipline is unknown. Therefore, this study describes the neuromuscular, metabolic and cognitive responses to an official Japanese kickboxing (K-1) fight in 8 kickboxers. METHODS: Measurements before and after the competition involved a simple reaction time test (SRT), countermovement jump (CMJ), blood lactate (BLA) and rating of perceived exertion (RPE)...
October 27, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29083127/influence-of-shoe-sole-bending-stiffness-on-sprinting-performance
#19
Ryu Nagahara, Hiroaki Kanehisa, Tetsuo Fukunaga
BACKGROUND: This study investigated the influence of shoe sole bending stiffness on sprint performance, in relation to anthropometric and strength-power capability characteristics of sprinters. METHODS: Seventeen male athletes performed three maximal effort 60-m sprints using spiked-shoes with different bending stiffness sole. Sprint times during 60-m sprint, anthropometry and strength-power capabilities represented by maximum toe-flexor test and rebound continuous ankle jump of athletes were measured...
October 27, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29083126/exercise-to-rest-ratios-in-rsa-training-in-women-s-soccer
#20
Bruno Ruscello, Mario Esposito, Filippo Partipilo, Dalila DI Cicco, Cristoforo Filetti, Laura Pantanella, Stefano D'Ottavio
BACKGROUND: To investigate the applicability of three different exercise to rest ratios in RSA training in women's soccer players, applying those ones already adopted in male adult and young players, when performing three different sprinting modes (straight, shuttle and sprinting with changing of direction). METHODS: 15 trained female soccer players (height: 1.65 ± 0.06 m; weight: 59.3 ± 9.0 kg; BMI 21.6 ± 2.7 kg·m-2; age: 23.3±5.9 years) participated to the study...
October 27, 2017: Journal of Sports Medicine and Physical Fitness
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