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https://www.readbyqxmd.com/read/28636435/effects-of-a-contrast-training-programme-on-jumping-sprinting-and-agility-performance-of-prepubertal-basketball-players
#1
Pedro Ángel Latorre Román, Francisco Javier Villar Macias, Felipe García Pinillos
The purpose of this study was to examine the effects of a 10 week contrast training (CT) programme (isometric + plyometric) on jumping, sprinting abilities and agility performance in prepubertal basketball players. Fifty-eight children from a basketball academy (age: 8.72 ± 0.97 years; body mass index: 17.22 ± 2.48 kg/m(2)) successfully completed the study. Participants were randomly assigned to experimental groups (EG, n = 30) and control groups (CG, n = 28). The CT programme was included in the experimental group's training sessions - twice a week - as part of their usual weekly training regime...
June 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28598797/physical-fitness-and-obesity-levels-during-an-academic-year-followed-by-summer-holidays-an-issue-of-insufficient-time-for-physical-activity
#2
George Aphamis, Yiannakis Ioannou, Christoforos D Giannaki
Today, available time for physical activity has been continuously decreasing, whilst, school-time physical education (PE) classes appear to be the only real option for many adolescents to engage in physical activity and exercise. The aim of the present study was to investigate fitness and health related parameters over one academic year, and after the summer holidays for adolescents who do not engage in out-of-school physical activities. Participants were 153 students (age: 15-17 years; boys n = 86) who exercised only during PE (2 × 45-min periods per week)...
June 9, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28597614/the-effects-of-two-different-explosive-strength-training-programs-on-vertical-jump-performance-in-basketball
#3
Simone Ciacci, Sandro Bartolomei
BACKGROUND: The aim of this study was to compare the effects of two different training programs oriented to improve vertical jump performance and leg stiffness in basketball players. METHODS: Fifty-eight male basketball players were involved, divided into three age groups (Senior, U19 and U17). Subsequently, within any age group, the players were randomly divided into two training groups, respectively performing a 16-week "hang-clean" training program (HCL), and a "half-squat" training program (HSQ), lasting for the same duration...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28595238/distinguishing-playing-status-through-a-functionally-relevant-performance-measure-in-female-division-i-collegiate-soccer-athletes
#4
Mitchel A Magrini, Ryan J Colquhoun, John H Sellers, Eric C Conchola, Garrett M Hester, Ryan M Thiele, Zach K Pope, Doug B Smith
Although soccer is predominately an endurance sport, high velocity movements may be an important indicator of athletic success. The purpose of this investigation was to establish whether squat jumps (SJ) can differentiate starters from non-starters with a female collegiate division I soccer team. Eighteen female division I soccer athletes were separated into two groups: 9 starters (age: 19.5 ± 1.0; mass = 64.8 ± 11.5 kg; height = 167.5 ± 7.7 cm; games started = 18.2 ± 4.7; minutes played = 1633.8 ± 478...
June 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28581367/carbohydrate-mouth-rinse-improves-morning-high-intensity-exercise-performance
#5
Neil D Clarke, Scott Hammond, Evangelos Kornilios, Peter D Mundy
Oral carbohydrate (CHO) rinsing has been demonstrated to provide beneficial effects on exercise performance of durations of up to one hour. The aim of the present study was to investigate the effects of CHO mouth rinsing on morning high-intensity exercise performance. Following institutional ethical approval and familiarisation, 12 healthy males (mean ± SD age: 23 ± 3 years, height: 175.5 ± 7.4 cm, body mass: 75.4 ± 7.5 kg) participated in this study. Countermovement jump (CMJ) height, isometric mid-thigh pull peak force, 10 m sprint time and bench press and back squat repetitions to failure were assessed following CHO and placebo (PLA) rinsing or a control condition (CON)...
June 5, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28579190/effect-of-low-level-laser-therapy-lllt-and-light-emitting-diodes-ledt-applied-during-combined-training-on-performance-and-post-exercise-recovery-protocol-for-a-randomized-placebo-controlled-trial
#6
Aryane Flauzino Machado, Jéssica Kirsch Micheletti, Franciele Marques Vanderlei, Fabio Yuzo Nakamura, Ernesto Cesar Pinto Leal-Junior, Jayme Netto Junior, Carlos Marcelo Pastre
BACKGROUND: Previous studies have shown positive results of phototherapy for improving performance and accelerating recovery; however, the effects of phototherapy during training and after a primary adaptation remain unclear. The aim of this randomized controlled trial is to analyze the effects of phototherapy and combined training on clinical, functional, and psychological outcomes and on vascular endothelial growth factor. METHODS: This randomized placebo-controlled trial by stratified sample will involve 45 healthy male participants...
May 20, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28574410/changes-in-muscle-cross-sectional-area-muscle-force-and-jump-performance-during-6-weeks-of-progressive-whole-body-vibration-combined-with-progressive-high-intensity-resistance-training
#7
A Rosenberger, Å Beijer, B Johannes, E Schoenau, J Mester, J Rittweger, J Zange
OBJECTIVES: We hypothesized that progressive whole-body vibration (WBV) superimposed to progressive high intensity resistance training has greater effects on muscle cross-sectional area (CSA), muscle force of leg muscles, and jump performance than progressive high intensity resistance training alone. METHODS: Two groups of healthy male subjects performed either 6 weeks of Resistive Vibration Exercise (RVE, squats and heel raises with WBV, n=13) or Resistive Exercise (RE, squats and heel raises without WBV, n=13)...
June 1, 2017: Journal of Musculoskeletal & Neuronal Interactions
https://www.readbyqxmd.com/read/28573027/operating-length-and-velocity-of-human-m-vastus-lateralis-fascicles-during-vertical-jumping
#8
Maria Elissavet Nikolaidou, Robert Marzilger, Sebastian Bohm, Falk Mersmann, Adamantios Arampatzis
Humans achieve greater jump height during a counter-movement jump (CMJ) than in a squat jump (SJ). However, the crucial difference is the mean mechanical power output during the propulsion phase, which could be determined by intrinsic neuro-muscular mechanisms for power production. We measured M. vastus lateralis (VL) fascicle length changes and activation patterns and assessed the force-length, force-velocity and power-velocity potentials during the jumps. Compared with the SJ, the VL fascicles operated on a more favourable portion of the force-length curve (7% greater force potential, i...
May 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28566815/training-induced-changes-in-physical-performance-can-be-achieved-without-body-mass-reduction-after-eight-week-of-strength-and-injury-prevention-oriented-programme-in-volleyball-female-players
#9
M Lehnert, M Sigmund, P Lipinska, R Vařeková, M Hroch, Z Xaverová, P Stastny, P Háp, P Zmijewski
The purpose of the study was to analyse the changes in muscle strength, power, and somatic parameters in elite volleyball players after a specific pre-season training programme aimed at improving jumping and strength performance and injury prevention. Twelve junior female volleyball players participated in an 8-week training programme. Anthropometric characteristics, isokinetic peak torque (PT) single-joint knee flexion (H) and extension (Q) at 60º/s and 180º/s, counter movement jump (CMJ), squat jump (SJ), and reactive strength index (RSI) were measured before and after intervention...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28558445/the-effect-of-beach-volleyball-training-on-muscle-performance-of-indoor-volleyball-players
#10
Dimitrios G Balasas, Kosmas Christoulas, Panagiotis Stefanidis, Efstratios Vamvakoudis, Theodoros M Bampouras
BACKGROUND: Beach volleyball is frequently used as a conditioning activity for indoor volleyball players, but little information exists regarding any performance benefits when transitioning from sand to hard court. The present study examined the effect of 12 weeks beach volleyball training on muscle performance of indoor volleyball players. METHODS: Eleven athletes who completed an indoor volleyball season and were willing to train and compete at beach volleyball, participated in the study...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28553994/the-repeated-bout-effect-of-traditional-resistance-exercises-on-running-performance-across-three-bouts
#11
Kenji Doma, Moritz Schumann, Anthony S Leicht, Brian Edward Heilbronn, Felipe Damas, Dean Burt
Purpose This study investigated the repeated bout effect of three typical lower-body resistance training (RT) sessions on maximal and sub-maximal effort running performance. Methods Twelve resistance-untrained men (age 24±4 years; height 1.81±0.10 m; body mass 79.3±10.9 kg; VO2peak 48.2±6.5 mL∙kg-1∙min-1; six-repetition maximum squat 71.7±12.2kg) undertook three bouts of RT sessions at six-repetition maximum. Counter-movement-jump (CMJ), lower-body ROM, muscle soreness and creatine kinase (CK) were examined prior to (T0), immediately-post (T1), 24 (T24) and 48 (T48) h post each RT bout...
May 29, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28538326/technology-in-strength-and-conditioning-tracking-lower-limb-exercises-with-wearable-sensors
#12
Martin A OʼReilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian Caulfield
Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However, because of cost and availability issues, individuals are often left training without expert supervision. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualized feedback regarding exercise performance. These systems could enable S&C coaches to remotely monitor sessions and help gym users record workouts...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538294/effects-of-different-combinations-of-strength-power-and-plyometric-training-on-the-physical-performance-of-elite-young-soccer-players
#13
Ronaldo Kobal, Irineu Loturco, Renato Barroso, Saulo Gil, Rogério Cuniyochi, Carlos Ugrinowitsch, Hamilton Roschel, Valmor Tricoli
The combination of strength (ST) and plyometric training (PT) has been shown to be effective for improving sport-specific performance. However, there is no consensus about the most effective way to combine these methods in the same training session to produce greater improvements in neuromuscular performance of soccer players. Thus, the purpose of this study was to compare the effects of different combinations of ST and PT sequences on strength, jump, speed, and agility capacities of elite young soccer players...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28537195/caffeine-ingestion-acutely-enhances-muscular-strength-and-power-but-not-muscular-endurance-in-resistance-trained-men
#14
Jozo Grgic, Pavle Mikulic
The goal of this randomized, double-blind, cross-over study was to assess the acute effects of caffeine ingestion on muscular strength and power, muscular endurance, rate of perceived exertion (RPE), and pain perception (PP) in resistance-trained men. Seventeen volunteers (mean ± SD: age = 26 ± 6 years, stature = 182 ± 9 cm, body mass = 84 ± 9 kg, resistance training experience = 7 ± 3 years) consumed placebo or 6 mg kg(-1) of anhydrous caffeine 1 h before testing...
May 24, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28530478/validity-of-a-linear-velocity-transducer-for-testing-maximum-vertical-jumps
#15
Alejandro Pérez-Castilla, Belén Feriche, Slobodan Jaric, Paulino Padial, Amador García-Ramos
This study aimed to examine the validity of mechanical variables obtained by a linear velocity transducer from the unconstrained and constrained squat jump (SJ). Twenty-three men were tested on the unconstrained SJ and the SJ constrained by a Smith machine. Maximum values of force, velocity, and power were simultaneously recorded both by a linear velocity transducer attached to a bar of mass of 17, 30, 45, 60 and 75 kg and by a force plate. Linear velocity transducer generally overestimated the outcomes measured as compared to the force plate, particularly in unconstrained SJ...
May 22, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28528435/benefits-of-a-regular-vs-irregular-rhythm-based-training-programme-on-physical-fitness-and-motor-skills-in-obese-girls
#16
Ghazi Racil, Wassim Elmontassar, Imen Rommene, Claire Tourny, Anis Chaouachi, Jeremy B Coquart
PURPOSE: The aim of the current study was to examine the impact of a physical exercise programme including rhythmic elements (regular and irregular tempos) on physiological variables, motor skills (MS), and jump performances in obese girls. METHODS: Thirty-six obese girls (age: 10.4 ± 0.9 years, body mass: 58.7 ± 4.0 kg, height: 1.37 ± 0.04 m, body mass index: 31.2 ± 2.1) participated in three weekly physical exercise sessions for 6 weeks, with each session consisting of basic fundamental locomotor movements...
May 20, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28513281/short-term-effects-of-kinesio-taping-on-muscle-recruitment-order-during-a-vertical-jump-a-pilot-study
#17
Guillermo Mendez-Rebolledo, Rodrigo Ramirez-Campillo, Eduardo Guzman-Muñoz, Valeska Gatica-Rojas, Alexis Dabanch-Santis, Francisco Diaz-Valenzuela
CONTEXT: Kinesio taping is commonly used in sports and rehabilitation settings with the aim of prevention and treatment of musculoskeletal injuries. However, limited evidence exists regarding the effects of 24 and 72 h of kinesio taping on trunk and lower limb neuromuscular and kinetic performance during a vertical jump. OBJECTIVE: The purpose of this study was to analyze the short-term effects of kinesio taping on the height and ground reaction force during a vertical jump, in addition to trunk and lower limb muscle latency and recruitment order...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28511496/effect-of-passive-active-and-combined-warm-up-on-lower-limb-muscle-performance-and-dynamic-stability-in-recreational-sports-players
#18
Kedar Gogte, Prateek Srivastav, Ganesh Balthillaya Miyaru
INTRODUCTION: Warm up is an activity that is done before a sports activity. The warm up can be done actively and passively. The preferred mode is active warm up in athletes. There are inconclusive effects of passive warm up compared with an active warm up on short term muscle performance. The cumulative effect of passive and active warm up on muscle performance and dynamic stability is not known. AIM: To find out the effects of passive, active and combined warm up on lower limb muscle performance and dynamic stability in recreational sports players...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28503527/postactivation-potentiation-in-elite-young-soccer-players
#19
Adriano Titton, Emerson Franchini
The aim of this study was to investigate the acute effects of 16 different combinations to cause the postactivation potentiation (PAP) in elite young soccer players. Squat exercise in 4 different intensities (40%, 60%, 80%, and 100% one-repetition maximum [1RM]) was performed and its effects were evaluated in the performance of countermovement jump (CMJ), after 4 different recovery times (1, 3, 5, and 10 min). For this purpose, 25 young soccer players, underwent five experimental sessions. At the first session the control to determine 1RM in half-squat was carried out...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28489955/isometric-and-dynamic-strength-and-neuromuscular-attributes-as-predictors-of-vertical-jump-performance-in-11%C3%A2-13-year-old-male-athletes
#20
Brandon John McKinlay, Phillip J Wallace, Raffy Dotan, Devon Long, Craig Tokuno, David A Gabriel, Bareket Falk
In explosive contractions, neural activation is a major factor in determining the rate of torque development, while the latter is an important determinant of jump performance. However, the contribution of neuromuscular activation and rate of torque development to jump performance in children and youth is unclear. PURPOSE: To examine the relationships between the rate of neuromuscular activation, peak torque, rate of torque development, and jump performance in young male athletes. METHODS: Forty-one 12...
May 10, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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