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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/27898744/pre-exercise-hyperpnea-attenuates-exercise-induced-bronchoconstriction-without-affecting-performance
#2
Philipp A Eichenberger, Thomas A Scherer, Christina M Spengler
Whole-body warm-up exercises were shown to attenuate exercise-induced bronchoconstriction (EIB). Whether intense pre-exercise hyperpnea offers similar protection and whether this might negatively affect exercise performance is unknown. Nine subjects with EIB (25±5 yrs; forced expiratory volume in 1s [FEV1], 104±15% predicted) performed an exercise challenge (ECh) followed-after 30min-by a constant-load cycling test to exhaustion. The ECh was preceded by one of four conditions: by i) control warm-up (CON) or by 10min of normocapnic hyperpnea with partial rebreathing at either ii) 50% (WU50) or iii) variable intensity (8x 30s-80%/45s-30%; WU80/30), or at iv) 70% (WU70) of maximal voluntary ventilation...
2016: PloS One
https://www.readbyqxmd.com/read/27895574/robot-assisted-rehabilitation-of-ankle-plantar-flexors-spasticity-a-3-month-study-with-proprioceptive-neuromuscular-facilitation
#3
Zhihao Zhou, Yao Sun, Ninghua Wang, Fan Gao, Kunlin Wei, Qining Wang
In this paper, we aim to investigate the effect of proprioceptive neuromuscular facilitation (PNF)-based rehabilitation for ankle plantar flexors spasticity by using a Robotic Ankle-foot Rehabilitation System (RARS). A modified robot-assisted system was proposed, and seven poststroke patients with hemiplegic spastic ankles participated in a 3-month robotic PNF training. Their impaired sides were used as the experimental group, while their unimpaired sides as the control group. A robotic intervention for the experimental group started from a 2-min passive stretching to warming-up or relaxing the soleus and gastrocnemius muscles and also ended with the same one...
2016: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/27891159/effects-of-health-qigong-exercises-on-relieving-symptoms-of-parkinson-s-disease
#4
Xiao Lei Liu, Shihui Chen, Yongtai Wang
The purpose of this study was to investigate the effects of Health Qigong on the treatment and releasing symptoms of Parkinson's disease (PD). Fifty-four moderate PD patients (N = 54) were randomly divided into experimental and control groups. Twenty-eight PD patients were placed in the experimental group in which the prescribed medication plus Health Qigong exercise will be used as intervention. The other 26 PD patients as the control group were treated only with regular medication. Ten-week intervention had been conducted for the study, and participants completed the scheduled exercises 5 times per week for 60 minutes each time (10 minutes for warm-up, 40 minutes for the exercise, and 10 minutes for cooldown)...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27888213/coach-directed-education-is-associated-with-injury-prevention-behaviour-in-players-an-ecological-cross-sectional-study
#5
James C Brown, Sugnet Gardner-Lubbe, Michael Ian Lambert, Willem van Mechelen, Evert Verhagen
BACKGROUND/AIM: Rugby union ('rugby') presents an above-average risk of injury to participants. BokSmart is a South African nationwide intervention that aims to reduce rugby-related injuries in players. This is achieved by educating coaches and referees to improve injury behaviour of players. Thus, the aim of this study was to assess if the receipt of injury-prevention education was associated with player behaviour. METHODS: Junior (n=2279) and senior (n=1642) players, who attended merit-based South African Rugby tournaments (2008-2012), completed an anonymous questionnaire...
November 25, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27870606/the-application-of-cortical-arousal-assessment-to-control-neuromuscular-fatigue-during-strength-training
#6
Vicente Javier Clemente-Suárez
The author's aim was to analyze the cortical arousal response during a conventional strength training session as a method to assess central nervous system fatigue. Sixteen trained men were recruited to perform the maximum number of training series composed of 6 exercises of 10 repetition each, at the intensity of 70% of the 1 maximum repetition, with a rest period of 2 min between exercises and 5 min between series, until exhaustion. Cortical arousal was measured using the critical flicker fusion threshold before, after warm-up, after each exercises series, after the recovery phase between series, and 15 min and 30 min after finishing the training session...
November 21, 2016: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27865993/fifteen-month-old-infants-cortisol-levels-decrease-after-a-30-min-warm-up-procedure
#7
Norbert Zmyj, Silvia Schneider, Sabine Seehagen
Stress-induction procedures designed to increase cortisol levels in infants have been ineffective in many studies. One reason might be that infants did not have sufficient time to settle into the laboratory environment prior to the start of the stress induction, and thus already had high baseline levels of cortisol. In this study we investigate whether an extended warm-up period reduces infants' (N=22) cortisol levels. Fifteen-month-old infants' saliva cortisol was measured upon arrival at the laboratory. Then, they were allowed to play with their parent...
November 15, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27826397/the-effect-of-precooling-on-exhaustive-performance-in-the-hot-environment
#8
Ahmad Azad, Mansour Mousavi, Ali Gorzi, Aghaali Ghasemnian
BACKGROUND: Pre-cooling is known to enhance exercise performance in soccer players. However, little information currently exists regarding precooling effects in Iranian young soccer players. OBJECTIVES: The aim of this study was to assess the effect of precooling (water immersion) on exhaustive performance in the heat ( temperature = 32 - 34°C, humidity = 50%). PATIENTS AND METHODS: Sixteen young male soccer players from the provincial competitive teams were divided into two equal groups and were randomly assigned to precooling (age = 16...
September 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/27824252/elite-female-basketball-players-body-weight-neuromuscular-training-and-performance-on-the-y-balance-test
#9
Roberto Benis, Matteo Bonato, Antonio La Torre
CONTEXT: Neuromuscular training enhances unconscious motor responses by stimulating both the afferent signals and central mechanisms responsible for dynamic joint control. Dynamic joint-control training is a vital component of injury-prevention programs. OBJECTIVE: To investigate the effects of body-weight neuromuscular training on Y-Balance Test (YBT) performance and postural control in female basketball players. DESIGN: Randomized controlled clinical trial...
September 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27818850/possible-mechanism-of-abrupt-jump-in-winter-surface-air-temperature-in-the-late-1980s-over-the-northern-hemisphere
#10
Yeon-Hee Kim, Maeng-Ki Kim, William K M Lau, Kyu-Myong Kim, Chun-Ho Cho
Possible cause of an abrupt warming in winter mean surface air temperature in the midlatitudes of the Northern Hemisphere in the late 1980s is investigated using observation and reanalysis data. To determine the timing of abrupt warming, we use a regime shift index based on detection of the largest significant differences between the mean values of two contiguous periods. Results show that the abrupt warming occurred in association with a regime shift after the 1980's in which the zonal mean sea level pressure (SLP) is significantly increased (decreased) at the latitude 25-35°N (60-70°N), in the form of north-south dipole-like SLP anomaly spanning the subtropics and high latitude...
December 27, 2015: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/27814586/exercise-intolerance-and-exercise-induced-bronchoconstriction-in-children
#11
Predrag B Minic, Aleksandar D Sovtic
Respiratory symptoms at rest or during exercise may restrain the physical capabilities required for normal motor and psychosocial development in children. The most frequent cause of exercise intolerance, apart from poor physical fitness, is exercise-induced bronchoconstriction (EIB), which may occur in some healthy children and in children with asthma. It is proposed that hyperventilation during exercise is associated with drying and cooling of airways, which can trigger a proinflammatory response. Several tests are used to confirm EIB, and the exercise-challenge test is the most common...
January 1, 2017: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/27813684/altered-vertical-ground-reaction-forces-in-participants-with-chronic-ankle-instability-while-running
#12
John Bigouette, Janet Simon, Kathy Liu, Carrie L Docherty
CONTEXT: Altered gait kinetics may increase the risk of long-term injuries in participants with chronic ankle instability (CAI). Vertical ground reaction forces (vGRFs) can provide insight into how body loading is altered. OBJECTIVE: To compare the components of vGRFs while running in participants with or without CAI. DESIGN: Cohort study. SETTING: University biomechanics laboratory. PATIENTS OR OTHER PARTICIPANTS: Twenty-four experienced, college-aged runners...
September 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27810848/effects-of-a-short-duration-stretching-drill-after-pitching-on-elbow-and-shoulder-range-of-motion-in-professional-baseball-pitchers
#13
Rafael F Escamilla, Kyle Yamashiro, Tony Mikla, Jeff Collins, Keith Lieppman, James R Andrews
BACKGROUND: A glenohumeral internal rotation (IR) deficit or a total rotational motion (IR plus external rotation [ER]) deficit in the throwing shoulder compared with the nonthrowing shoulder has been shown to increase the risk of shoulder and elbow injuries. After a pitching session, both IR and total rotational motion deficits have been shown to occur naturally for an extended period of time in asymptomatic pitchers, but it is unclear how to best control these deficits between pitching sessions...
November 3, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27810684/development-and-construct-validity-and-internal-consistency-of-the-grasp-and-reach-assessment-of-brisbane-grab-for-infants-with-asymmetric-brain-injury
#14
Micah Perez, Jenny Ziviani, Andrea Guzzetta, Robert S Ware, Gessica Tealdi, Valentina Burzi, Roslyn N Boyd
INTRODUCTION: Infants with asymmetric brain injury (asymBI) are at high risk of Unilateral Cerebral Palsy (UCP). The Grasp and Reach Assessment of Brisbane (GRAB) was developed to detect asymmetries in unimanual/bimanual upper limb (UL) reach and grasp behaviours in infants with asymBI. This study reports the development of the GRAB and evaluates its construct validity and internal consistency. MATERIAL AND METHODS: Prospective study of twenty four infants with asymBI and twenty typically developing (TD) infants at 18 weeks corrected age (C...
October 27, 2016: Infant Behavior & Development
https://www.readbyqxmd.com/read/27806997/evaluation-of-the-effectiveness-and-implementation-of-the-boksmart-safe-six-injury-prevention-programme-a-study-protocol
#15
Nicola Sewry, Evert Verhagen, Mike Lambert, Willem van Mechelen, James Brown
BACKGROUND: The injury burden in rugby union ('rugby') is high. While exercise-based injury prevention programmes have successfully reduced injuries in other sports such as football, there is minimal research on this topic in rugby union. OBJECTIVE: To evaluate the effectiveness and implementation of an exercise-based intervention (BokSmart Safe Six) in junior rugby players that aims to reduce the injury risk profile and burden of injury. SETTING: 14-16-year-old junior rugby players in two geographically separated locations in South Africa over the 2017 rugby playing season...
November 2, 2016: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/27806010/warm-up-for-sprint-swimming-race-pace-or-aerobic-stimulation-a-randomized-study
#16
Henrique P Neiva, Mário C Marques, Tiago M Barbosa, Mikel Izquierdo, João L Viana, Ana M Teixeira, Daniel A Marinho
The aim of this study was to compare the effects of two different warm-up intensities on 100m swimming performance in a randomized controlled trial. Thirteen competitive swimmers performed two 100m freestyle time-trials on separate days after either control or experimental warm-up, in a randomized design. The control warm-up included a typical race-pace set (4x25m), while the experimental warm-up included an aerobic set (8x50m at 98-102% of critical velocity). Cortisol, testosterone, blood lactate ([La]), oxygen uptake (VO2), heart rate, core (Tcore and Tcorenet) and tympanic temperatures, and rating of perceived exertion (RPE) were monitored...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27806006/using-the-split-squat-to-potentiate-bilateral-and-unilateral-jump-performance
#17
Chris Bishop, Joe Tarrant, Paul Jarvis, Anthony Turner
The purpose of this study was to examine if a split squat conditioning exercise with no or light loads could potentiate unilateral and bilateral jump performance. Twelve semi-professional rugby players (age: 22.3 ± 1.4 years; height: 1.84 ± 0.05 m, mass: 92.4 ± 9.6 kg) from the English National League 1 performed a series of unilateral and bilateral countermovement jumps (CMJ) and broad jumps (BJ) over the course of two testing days. Both testing days involved performing baseline jumps before completing two sets of ten repetitions of a split squat, this completed with either bodyweight (testing session 1) or a 30kg weighted vest (testing session 2)...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27793803/biomechanical-effects-of-an-injury-prevention-program-in-preadolescent-female-soccer-athletes
#18
Julie A Thompson, Andrew A Tran, Corey T Gatewood, Rebecca Shultz, Amy Silder, Scott L Delp, Jason L Dragoo
BACKGROUND: Anterior cruciate ligament (ACL) injuries are common, and children as young as 10 years of age exhibit movement patterns associated with an ACL injury risk. Prevention programs have been shown to reduce injury rates, but the mechanisms behind these programs are largely unknown. Few studies have investigated biomechanical changes after injury prevention programs in children. PURPOSE/HYPOTHESIS: To investigate the effects of the F-MARC 11+ injury prevention warm-up program on changes to biomechanical risk factors for an ACL injury in preadolescent female soccer players...
October 28, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27787468/effect-of-direct-whole-body-vibration-on-upper-body-muscular-power-in-recreational-resistance-trained-men
#19
Margaret T Jones, Joel Martin, Andrew R Jagim, Jonathan M Oliver
To determine the acute effect of whole body vibration (WBV) on upper body power, 15 men (mean ± SD; age 21.5 ± 2.3 years; height 173.1 ± 6.5 cm; weight 77.2 ± 13.8 kg) with ≥ 1 year resistance training experience and a bench press (BP): body mass ratio ≥ 1.25 participated in a repeated measures crossover design. Session 1 included body composition ((BodPod) 15.76 ± 6.7 % body fat), 3-repetition maximum BP, and familiarization with: seated medicine ball throw (SMBT), plyometric push-up on a force plate (PPU), and vertical WBV platform...
October 13, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27777058/voice-habits-and-behaviors-voice-care-among-flamenco-singers
#20
Marina Garzón García, Juana Muñoz López, Elvira Y Mendoza Lara
PURPOSE: The purpose of this study is to analyze the vocal behavior of flamenco singers, as compared with classical music singers, to establish a differential vocal profile of voice habits and behaviors in flamenco music. METHOD: Bibliographic review was conducted, and the Singer's Vocal Habits Questionnaire, an experimental tool designed by the authors to gather data regarding hygiene behavior, drinking and smoking habits, type of practice, voice care, and symptomatology perceived in both the singing and the speaking voice, was administered...
October 21, 2016: Journal of Voice: Official Journal of the Voice Foundation
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