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Journal of Sports Medicine and Physical Fitness

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https://www.readbyqxmd.com/read/27901341/the-efficacy-and-characteristics-of-warm-up-and-re-warm-up-practices-in-soccer-players-a-systematic-review
#1
Amri Hammami, James Zois, Maamer Slimani, Mark Russel, Ezdine Bouhlel
INTRODUCTION: This review aimed (i) to evaluate the current research that examines the efficacy of warm-up (WU) and re-warm-up (RWU) on physical performance, and (ii) to highlight the WU and RWU characteristics that optimise subsequent performance in soccer players. EVIDENCE ACQUISITION: A computerized search was performed in the PubMed, ScienceDirect and Google Scholar (from 1995 to December 2015) for English-language, peer- reviewed investigations using the terms "soccer" OR "football" AND "warm-up" OR "stretching" OR "post-activation potentiation" OR "pre-activity" OR "re-warm-up" AND "performance" OR "jump" OR "sprint" OR "running"...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27901340/effects-of-a-trail-mountain-race-on-neuromuscular-performance-and-hydration-status-in-trained-runners
#2
Ernest Baiget, Javier Peña, Xantal Borràs, Toni Caparrós, José L López, Francesc Marin, Jordi Coma, Eduard Comerma
BACKGROUND: The aims of this study were (a) to examine the effects of a trail mountain race (TMR) on hydration status and neuromuscular performance of recreational trail runners and (b) to determine the relationship among these parameters, subject's characteristics and competitive performance. METHODS: 35 male recreational trail runners (age, 38.1 ± 9.5 years; height, 177.3 ± 5.8 cm; body mass, 73.8 ± 8.4 kg; mean ± SD) were assessed before and after a 21.1 km TMR...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27901339/cardiac-parasympathetic-reactivation-after-small-sided-soccer-games-and-repeated-sprints-in-untrained-healthy-adolescents
#3
Amri Hammami, Sofien Kasmi, Narimen Yousfi, Marwa Bouamra, Zouhaier Tabka, Ezdine Bouhlel
BACKGROUND: It has been shown that recreational soccer was a highly motivating and social activity which produces large improvements in health-related indices in sedentary healthy and unhealthy subjects. The purpose of this study was to compare the acute parasympathetic reactivation after small-sided soccer games (SSG) and repeated sprints training (RST) sessions. METHODS: Eight post-pubertal untrained adolescents (age 15.8 ± 0.6 years, body mass 59.1 ± 3.7 kg, height 1...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27901338/determinant-factors-of-peak-treadmill-speed-in-physically-active-men
#4
Leonardo Alves Pasqua, Mayara V Damasceno, Salomão Bueno, Alessandro M Zagatto, Gustavo G DE Araújo, Adriano E Lima-Silva, Rômulo Bertuzzi
BACKGROUND: The aim of the present study was to determine whether physiological factors and maximal dynamic strength are able to determine the peak treadmill speed (PTS) in physically active individuals. METHODS: One hundred and fifty physically active healthy males voluntarily visit the laboratory on three separate occasions and underwent the following activities: first visit: IPAQ (short version), anthropometric measurements, and a maximal incremental test performed for physiological variables (maximal oxygen uptake ( ) and respiratory compensation point (RCP); second visit: constant speed test for running economy (RE) measurement, and familiarization with the maximum dynamic strength (1RM) test in the leg press exercise; third visit: 1RM test...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27901337/the-effect-of-exercise-induced-weight-loss-on-myokines-and-adipokines-in-overweight-sedentary-females-steps-aerobics-vs-jogging-walking-exercises
#5
Halil Duzova, Esin Gullu, Guner Cicek, Burcu K Koksal, Basak Kayhan, Abdullah Gullu, Ibrahim Sahin
BACKGROUND: The objectives of this study were to verify effects of step-aerobic exercise (SAE) and jogging-walking exercise (JWE) program on myokines and adipokines levels in overweight sedentary females. METHODS: Volunteer subjects (n=25) were assigned to two exercise groups: steps aerobics and jogging-walking. The exercise program given to them was for five days a week and for twelve weeks period. Serum samples were collected from venous blood before and immediately after cardio-respiratory fitness test (CRF) by Bruce protocol and stored at -80 C until they were assayed before 12 weeks exercise program...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27882916/spirometry-improvement-after-muscular-exercise-in-elite-swimmers
#6
Alessandro Rubini, Alex Rizzato, Simone Fava, Nicola Olivato, Devanand Mangar, Enrico M Camporesi, Gerardo Bosco
BACKGROUND: An increased sympathetic activity during muscular effort is a well established physiological response, whose intensity is known to increase with the muscular load. Spirometry was described to improve as an effect of swimming training in healthy and asthmatic subjects, suggesting a decrease in airway resistance The aim was to investigate the possible effect of muscular exercise (swimming) on spirometry, in particular searching for possible differences because of different swimming times...
November 24, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27882915/characteristic-of-shoulder-and-hip-rotation-range-of-motion-in-adolescent-tennis-players
#7
Bi F Chang, Chia C Liu, Hsiao Y Chang
BACKGROUND: Adolescent tennis players require sufficient hip and shoulder flexibility to achieve the kinetic chain of a tennis stroke or serve. Hence, the objective of this study is to measure the glenohumeral joint internal and external rotation (IR and ER, respectively) and hip ER range of motion and to compare these parameters between experienced and beginner-level adolescent tennis players. METHODS: Twenty-three adolescent tennis players were divided into experienced (N = 12) and beginner groups (N = 11) on the basis of the adolescent national ranking of the Taiwan Tennis Association...
November 24, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27882914/propulsive-limb-coordination-and-body-acceleration-in-sprint-breaststroke-swimming
#8
Marek Strzała, Arkadiusz Stanula, Andrzej Ostrowski, Marcin Kaca, Piotr Kreżałek, Jacek Głodzik
BACKGROUND: This work is aimed at examining how coordination and kinematic indices interplay with swimming performance measured by average speed in 50m all-out test. METHODS: The group of 34 male competitive swimmers (19.1± 1.91 years old) participated in the study. The underwater movements of swimmers' bodies were recorded providing side- shots. Accelerations and angular velocity of pitch rotation of swimmer's sacrum were measured with inertial sensor device (three-axial accelerometer and gyroscope)...
November 24, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849118/acute-effects-of-different-aerobic-exercise-duration-on-pulse-wave-velocity-in-healthy-young-men
#9
Ryota Kobayashi, Hiroyuki Hatakeyama, Yuto Hashimoto, Takanobu Okamoto
BACKGROUND: The purpose of present study was to determine the acute effects of different aerobic exercise duration on pulse wave velocity (PWV) in healthy young men. METHODS: One week after measuring peak oxygen uptake to determine the duration of each exercise trial, 11 healthy males (age: 23.4 ± 0.6 years, height: 172.5 ± 2.3 cm, weight: 64.1 ± 2.4 kg) cycled on an ergometer for 15 (15 min-EX), 30 (30 min-EX) and 45 (45 min-EX) min at 65% peak oxygen uptake in random order...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849117/metabolic-responses-to-a-loaded-movement-training-workout
#10
Derek N Vandenbrink, Nicholas J Petrella, Eric V Neufeld, Brett A Dolezal, Daniel P Maclennan
BACKGROUND: Few studies have investigated the metabolic demands of functional exercise. We determined the oxygen cost, heart rate (HR) response, and energy expenditure (EE) both during and immediately following a loaded movement training (LMT) workout. METHODS: Ten participants (5 male, age = 23.5 ± 3.7 years, VO2peak = 53.3 ± 6.4 ml∙kg-1∙min- 1) completed baseline resting metabolic rate testing, a maximal oxygen uptake (VO2) test, and a familiarization trial...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849116/reliability-of-salivary-cortisol-and-immunoglobulin-a-measurements-from-the-ipro%C3%A2-before-and-after-sprint-cycling-exercise
#11
Luke A Macdonald, Phillip M Bellinger, Clare L Minahan
BACKGROUND: The purpose of this study was to evaluate the inter-day reliability of the IPRO method for determining resting and post-exercise salivary cortisol (sCort) and rate of salivary Immunoglobulin-A (sIgA) secretion. METHODS: Fourteen males (32±11 years) performed two trials (T1 and T2) separated by 7 d, comprising saliva sampling before and 15 min after completion of two, 30-s Wingate Anaerobic Tests separated by 3.5 min (2 x WAnT). sCort increased after the 2 x WAnT in both trials (T1: p<0...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849115/blood-pressure-response-to-isometric-handgrip-testing-and-aerobic-capacity-and-associations-with-sprint-performance-in-middle-aged-men-following-high-intensity-interval-training
#12
Ryszard Zarzeczny, Cyprian Tomza, Anna Polak, Agnieszka Nawrat-Szołtysik
BACKGROUND: Of this study were to determine if a 6-week high-intensity interval training (HIIT) protocol with increasing exercise volume affects aerobic capacity and arterial blood pressure (BP) measured during a fatiguing isometric handgrip test (IHT) in middle-aged, normotensive men and to assess whether sprint performance is associated with training-induced changes in BP. METHODS: Fourteen recreationally active men (age 43.0 ± 0.9 years, body mass 74.4 ± 2...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849114/effects-of-in-season-short-term-aerobic-and-high-intensity-interval-training-program-on-repeated-sprint-ability-and-jump-performance-in-handball-players
#13
Souhail Hermassi, Jørgen Ingebrigtsen, René Schwesig, Georg Fieseler, Karl S Delank, Karim Chamari, Roy J Shephard, Mohamed S Chelly
BACKGROUND: This study examined the effects of a 7-week in-season aerobic and high-intensity interval-training program on performance tests linked to successful handball play (e.g., repeated sprint and jumping ability). METHODS: Thirty participants (age 17.0 ± 1.2 years, body mass 81.1 ± 3.4 kg, height 1.82± 0.07 m) performed a Yo-Yo Intermittent Recovery Test level 1 (Yo-Yo IR1), a squat (SJ) and a countermovement jump test (CMJ), as well as a repeated sprint ability test (RSA)...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27849113/late-night-exercise-affects-the-autonomic-nervous-system-activity-but-not-the-hypothalamo-pituitary-adrenal-axis-in-the-next-morning
#14
Cihat Ucar, Tuba Özgöçer, Sedat Yildiz
BACKGROUND: Exercise activates hypothalamic-pituitary-adrenal axis (HPA) and autonomic nervous system (ANS) and generally causes beneficial changes in homeostatic balance. However, the health benefits of late-night exercise programs on the activity of HPA and ANS is not known. The aim of this study was to assess effects of late-night exercise on sleep quality and on the activities of the HPA axis (as cortisol awakening response, CAR) and the ANS (as heart rate variability, HRV) measurements in the following morning...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27813394/adaptations-in-movement-performance-after-plyometric-training-on-mini-trampoline-in-children
#15
Fotini Arabatzi
BACKGROUND: Deficits in postural control and skill performance are important intrinsic fall risk factors. Thus, the purpose of this study was to investigate the impact of trampoline plyometrics on postural control, and jumping height in pre-pubertal children. METHODS: Twenty-two school children were assigned to either a Trampoline group (TPLG, n = 12, 7 girls & 5 boys, age = 9.30 ± 0.55 years) or a Control group (CG, n = 12, 8 girls & 4 boys, age = 9.30 ± 0.55 years)...
November 4, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27813393/the-effect-of-a-short-term-training-period-on-physiological-parameters-and-running-performance-intensity-distribution-versus-constant-intensity-exercise
#16
Vicente J Clemente-Suárez, Athanasios A Dalamitros, Pantelis T Nikolaidis
BACKGROUND: This study compared the effect of two training strategies differing on the weekly intensity distribution on physiological parameters and running performance in moderately trained endurance athletes. METHODS: Thirty male athletes were equally divided into three groups, one following an increasing weekly aerobic intensity distribution (EXP1), one with constant weekly aerobic intensitydistribution (EXP2) and a control one, following a freely chosen program (CON)...
November 4, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27813392/physical-and-physiological-differences-of-backs-and-forwards-from-the-brazilian-national-rugby-union-team
#17
Fábio Y Nakamura, Lucas A Pereira, José E Moraes, Ronaldo Kobal, Katia Kitamura, Cesar C Cal Abad, Luís M Teixeira Vaz, Irineu Loturco
BACKGROUND: The aim of this study was to compare backs and forwards rugby union players recruited to a National team in the following physical and physiological indicators: anthropometrics, squat jump (SJ), countermovement jump (CMJ), 10- and 30-m sprint, resting heart rate variability (HRV), Yo-Yo test and heart rate (HR) at 2-min of test. METHODS: The measurements were performed on the first day of a training camp planned to finely select the players who would participate in the 2016 America's Rugby Championship...
November 4, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27813391/physical-fitness-characteristics-of-adolescent-wushu-athletes
#18
Hsiao C Huang, Wen L Wu, Yu K Chang, I H Chu
BACKGROUND: The purpose of this study was to examine the physical fitness of wushu athletes in junior high schools and to compare their fitness with that of track-and-field and basketball athletes, as well as general junior high school students. METHODS: A total of 120 participants aged 12-15 years were recruited for this study (wushu n = 30; track-and-field n = 30; basketball n = 30; general students n = 30). Participants' height, weight, flexibility, muscle endurance, cardiorespiratory endurance, agility, power, and static and dynamic balance were assessed and compared among sports groups and general students...
November 4, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27813390/injury-surveillance-of-female-adult-zumba%C3%A2-dancers
#19
Pablo A Domene, Neil D Clarke, Anne A Delextrat, Chris Easton
BACKGROUND: We sought to describe the patterns of injury and to establish the injury incidence rates associated with Zumba®. METHODS: Zumba® dancers were invited to complete an anonymous web-based survey containing 13 demographic background and 14 (1 yr retrospective) injury history questions. Inclusion criteria stated that the respondents had to be aged 18 - 64 yr and currently involved in group-based classes of Zumba®, either as a registered instructor or class participant...
November 4, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27792222/validation-of-the-non-exhaustive-test-to-determine-the-aerobic-capacity-in-swimming
#20
Claudio Alexandre Gobatto, Gustavo Gomes DE Araujo, Vanessa Santhiago, Marcelo Papoti, Fúlvia De Barros Manchado-Gobatto
BACKGROUND: Several methods of aerobic capacity evaluation have been applied to assess and prescribe the training sessions in swimming. However, most protocols either show exhaustive characteristics, triggering transitory stress period or several visits, influencing the session's organization. Thus, the purpose was to validate a double-bout exercise protocol for non-exhaustive aerobic capacity determination of swimmers. METHODS: Twelve swimmers were submitted to non-exhaustive and Maximal Lactate Steady State (MLSS) protocols...
October 28, 2016: Journal of Sports Medicine and Physical Fitness
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