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Core training effects on power

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https://www.readbyqxmd.com/read/30325935/in-season-eccentric-overload-training-in-elite-soccer-players-effects-on-body-composition-strength-and-sprint-performance
#1
Luis Suarez-Arrones, Eduardo Saez de Villarreal, Francisco Javier Núñez, Valter Di Salvo, Cristian Petri, Alessandro Buccolini, Rafael Angel Maldonado, Nacho Torreno, Alberto Mendez-Villanueva
The aim of this study was to describe the changes in body composition, strength and sprint performance in response to an entire competitive season of football training supplemented with 2 inertial eccentric-overload training sessions a week in young male professional soccer players. Whole body and regional composition (assessed using dual-energy X-ray absorptiometry), power output in half-squat and 40-m sprinting performance were evaluated in fourteen players. The eccentric-overload training consisted of training sessions a week of 1-2 sets of 10 exercises of upper-body and core (Day 1) and lower-body (Day 2), during the entire competitive season (27 weeks)...
2018: PloS One
https://www.readbyqxmd.com/read/29997737/field-test-performance-of-junior-competitive-surf-athletes-following-a-core-strength-training-program
#2
Tracy A Axel, Jill A Crussemeyer, Kevyn Dean, Douglas E Young
Lower body and core muscular strength are essential for optimal performance in many sports and competitive surfers have similar strength demands when maneuvering a surfboard to achieve competition success. Presently, the use of unstable surfaces is excessively utilized by surf coaches and trainers and to date, research does not support this as an effective training method for long-term improvements. Therefore, the purpose of this study was to determine the effectiveness of an 8-week Core Strength Training Program (CSTP) on a battery of field tests specific to assessing core musculature and lower body strength for junior competitive surf athletes...
2018: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29972001/-effects-of-intradermal-needling-on-core-muscle-stability-in-children-with-cerebral-palsy-a-clinical-comparative-study
#3
Tengche Qi, Chunnan Wang
OBJECTIVE: To observe the effects of rehabilitation training (RT) combined with intradermal needling, RT combined with acupuncture and RT alone on core muscle stability in children with cerebral palsy, and to explore the superior therapy to improve core muscle stability in children with cerebral palsy. METHODS: A total of 120 children with cerebral palsy aged from 2 to 4 years old were randomly divided into a RT and intradermal needling group (group A), a RT and acupuncture group (group B) and a RT group (group C), 40 cases in each one...
June 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29901435/sex-dependent-responses-to-exertional-heat-stroke-in-mice
#4
Christian K Garcia, Alex J Mattingly, Gerard P Robinson, Orlando Laitano, Michelle A King, Shauna M Dineen, Lisa R Leon, Thomas L Clanton
With increasing participation of females in endurance athletics and active military service, it is important to determine if there are inherent sex-dependent susceptibilities to exertional heat injury or heat stroke. In this study we compared responses of male and female adult mice to exertional heat stroke (EHS). All mice were instrumented for telemetry core temperature measurements and were exercise-trained for 3 wk before EHS. During EHS, environmental temperature was 37.5°C (35% RH) while the mice ran on a forced running wheel, using incremental increases in speed...
September 1, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29581141/risk-factors-for-and-prevention-of-shoulder-injuries-in-overhead-sports-a-systematic-review-with-best-evidence-synthesis
#5
REVIEW
Martin Asker, Hannah L Brooke, Markus Waldén, Ulrika Tranaeus, Fredrik Johansson, Eva Skillgate, Lena W Holm
OBJECTIVE: To assess the evidence for risk factors and prevention measures for shoulder injuries in overhead sports. DESIGN: Systematic review with best-evidence synthesis. DATA SOURCES: Medline (Ovid), PubMed (complementary search), Embase (Elsevier), Cochrane (Wiley), SPORTDiscus (Ebsco) and Web of Science Core Collection (Thomson Reuters), from 1 January 1990 to 15 May 2017. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Randomised controlled trials, cohort studies and case-control studies on risk factors or prevention measures for shoulder injuries in overhead sports...
October 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29523206/effectiveness-and-cost-effectiveness-of-humanistic-counselling-in-schools-for-young-people-with-emotional-distress-ethos-study-protocol-for-a-randomised-controlled-trial
#6
Megan Rose Stafford, Mick Cooper, Michael Barkham, Jeni Beecham, Peter Bower, Karen Cromarty, Andrew J B Fugard, Charlie Jackson, Peter Pearce, Rebekah Ryder, Cathy Street
BACKGROUND: One in ten children in Britain have been identified as experiencing a diagnosable mental health disorder. School-based humanistic counselling (SBHC) may help young people identify, address, and overcome psychological distress. Data from four pilot trials suggest that SBHC may be clinically effective. However, a fully powered randomised controlled trial (RCT) is needed to provide a robust test of its effectiveness, to assess its cost-effectiveness, and to determine the process of change...
March 9, 2018: Trials
https://www.readbyqxmd.com/read/29477429/efficient-computational-model-for-classification-of-protein-localization-images-using-extended-threshold-adjacency-statistics-and-support-vector-machines
#7
Muhammad Tahir, Bismillah Jan, Maqsood Hayat, Shakir Ullah Shah, Muhammad Amin
BACKGROUND AND OBJECTIVE: Discriminative and informative feature extraction is the core requirement for accurate and efficient classification of protein subcellular localization images so that drug development could be more effective. The objective of this paper is to propose a novel modification in the Threshold Adjacency Statistics technique and enhance its discriminative power. METHODS: In this work, we utilized Threshold Adjacency Statistics from a novel perspective to enhance its discrimination power and efficiency...
April 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29471849/implementing-alcohol-misuse-sbirt-in-a-national-cohort-of-pediatric-trauma-centers-a-type-iii-hybrid-effectiveness-implementation-trial
#8
Michael J Mello, Sara J Becker, Julie Bromberg, Janette Baird, Mark R Zonfrillo, Anthony Spirito
BACKGROUND: The American College of Surgeons mandates universal screening for alcohol misuse and delivery of an intervention for those screening positive as a requirement for certification as a level 1 trauma center. Though this requirement has been mandated for over a decade, its implementation has been challenging. Our research team completed an implementation study supporting seven pediatric trauma centers' compliance with the requirement by developing and implementing an institutional alcohol Screening, Brief Intervention and Referral to Treatment (SBIRT) policy for adolescent trauma patients...
February 22, 2018: Implementation Science: IS
https://www.readbyqxmd.com/read/29356948/effect-of-dietary-nitrate-supplementation-on-thermoregulatory-and-cardiovascular-responses-to-submaximal-cycling-in-the-heat
#9
Georgina L Kent, Brian Dawson, Gregory R Cox, Chris R Abbiss, Kurt J Smith, Kevin D Croft, Zi Xiang Lim, Annette Eastwood, Louise M Burke, Peter Peeling
PURPOSE: This study investigated whether reported improvements in blood flow distribution, and the possible related effects on thermoregulation during exercise following supplementation with beetroot juice (BR), a rich source of dietary nitrate (NO3 - ), are mitigated in the heat. METHODS: 12 male endurance-trained cyclists (age 27 ± 6 years, VO2peak 68.6 ± 8.1 ml kg-1  min-1 ) completed two 60 min submaximal cycling trials at 60% of VO2peak power output...
March 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28872380/optimizing-heat-acclimation-for-endurance-athletes-high-versus-low-intensity-training
#10
RANDOMIZED CONTROLLED TRIAL
Cyril Schmit, Rob Duffield, Christophe Hausswirth, Jeanick Brisswalter, Yann Le Meur
PURPOSE: To determine the effect of high- versus low-intensity training in the heat and ensuing taper period in the heat on endurance performance. METHODS: In total, 19 well-trained triathletes undertook 5 days of normal training and a 1-wk taper including either low- (heat acclimation [HA-L], n = 10) or high-intensity (HA-H, n = 9) training sessions in the heat (30°C, 50% relative humidity). A control group (n = 10) reproduced their usual training in thermoneutral conditions...
July 1, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28748371/acute-effects-of-heated-resistance-exercise-in-female-and-male-power-athletes
#11
RANDOMIZED CONTROLLED TRIAL
Julia R Casadio, Adam G Storey, Fabrice Merien, Andrew E Kilding, James D Cotter, Paul B Laursen
PURPOSE: To determine the effects of heated resistance exercise on thermal strain, neuromuscular function and hormonal responses in power athletes. METHODS: Sixteen (n = 8 female; 8 male) highly trained power athletes completed a combined strength and power resistance exercise session in hot (HOT ~30 °C) and temperate (CON ~20 °C) conditions. Human growth hormone (hGH), cortisol and testosterone concentrations in plasma, peak power (counter-movement jump, CMJ) and peak force (isometric mid-thigh pull) were measured before and after each training session; thermoregulatory responses were monitored during training...
October 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28271312/chronic-effects-of-superimposed-electromyostimulation-during-cycling-on-aerobic-and-anaerobic-capacity
#12
RANDOMIZED CONTROLLED TRIAL
Sebastian Mathes, Niklas Lehnen, Tobias Link, Wilhelm Bloch, Joachim Mester, Patrick Wahl
PURPOSE: To examine if chronic endurance training by means of simultaneously applied, superimposed electromyostimulation (EMS) can be used to improve performance and physiological core parameters compared to the traditional cycling. METHODS: Twenty-one male subjects (VO2peak 55.2 ± 5.1 ml min- 1  kg- 1 ) were assigned to either a cycling (C) or cycling with superimposed EMS (C + E) group. Before and after the 4-week training period, including 14 sessions of moderate cycling [60 min at 60% peak power output (PPO)], participants performed a 20-min time-trial, a step test to exhaustion, a 30-s isokinetic sprint test, and maximum force- and power-tests...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28195970/reduction-of-physiological-strain-under-a-hot-and-humid-environment-by-a-hybrid-cooling-vest
#13
Albert P C Chan, Y Yang, Francis K W Wong, Michael C H Yam, Del P Wong, W F Song
Cooling treatment is regarded as one of good practices to provide safe training conditions to athletic trainers in the hot environment. The present study aimed to investigate whether wearing a commercial lightweight and portable hybrid cooling vest that combines air ventilation fans with frozen gel packs was an effective means to reduce participants' body heat strain. In this within-subject repeated measures study, 10 male volunteers participated in two heat-stress trials (one with the cooling vest - COOL condition, and another without - CON condition, in a randomized order) inside a climatic chamber with a controlled ambient temperature 33 °C and relative humidity (RH) 75% on an experimental day...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28177747/short-term-heat-acclimation-improves-the-determinants-of-endurance-performance-and-5-km-running-performance-in-the-heat
#14
Carl A James, Alan J Richardson, Peter W Watt, Ashley G B Willmott, Oliver R Gibson, Neil S Maxwell
This study investigated the effect of 5 days of controlled short-term heat acclimation (STHA) on the determinants of endurance performance and 5-km performance in runners, relative to the impairment afforded by moderate heat stress. A control group (CON), matched for total work and power output (2.7 W·kg(-1)), differentiated thermal and exercise contributions of STHA on exercise performance. Seventeen participants (10 STHA, 7 CON) completed graded exercise tests (GXTs) in cool (13 °C, 50% relative humidity (RH), pre-training) and hot conditions (32 °C, 60% RH, pre- and post-training), as well as 5-km time trials (TTs) in the heat, pre- and post-training...
March 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27623161/increased-thermoregulatory-strain-when-wearing-an-upper-body-compression-garment-during-moderate-exercise-in-trained-older-adults
#15
RANDOMIZED CONTROLLED TRIAL
Iker Leoz-Abaurrea, Mikel Izquierdo, Miriam Gonzalez-Izal, Roberto Aguado-Jiménez
The efficacy of the use of an upper body compression garment (UBCG) as an ergogenic aid to reduce thermoregulatory strain in older adults remains unknown. The aim of this study was to evaluate the effects of UBCG on thermoregulatory, cardiorespiratory, and perceptual responses during cycling in a temperate environment (~25 °C, 66% rh) in trained older adults. Twelve cyclists aged 66 ± 2 years performed an intermittent 1-hr cycling trial at 50% of the peak power output followed by 10 min of passive recovery...
January 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/27378739/the-relationships-between-rumination-and-core-executive-functions-a-meta-analysis
#16
REVIEW
Yingkai Yang, Songfeng Cao, Grant S Shields, Zhaojun Teng, Yanling Liu
BACKGROUND: Rumination has been thought to relate to deficits in core executive functions (EFs), but the empirical findings for this idea are mixed. The aim of the present study is to synthesize existing literature to clarify these relations. METHODS: A comprehensive literature search revealed 34 published as well as unpublished studies on the associations between rumination and core EF. These studies report on 3,066 participants. The effect size in the meta-analyses was obtained by the z transformation of correlation coefficients...
January 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/27157334/the-effect-of-high-versus-low-intensity-heat-acclimation-on-performance-and-neuromuscular-responses
#17
Georgia L Wingfield, Rachel Gale, Geoffrey M Minett, Frank E Marino, Melissa Skein
This study examined the effect of exercise intensity and duration during 5-day heat acclimation (HA) on cycling performance and neuromuscular responses. 20 recreationally trained males completed a 'baseline' trial followed by 5 consecutive days HA, and a 'post-acclimation' trial. Baseline and post-acclimation trials consisted of maximal voluntary contractions (MVC), a single and repeated countermovement jump protocol, 20km cycling time trial (TT) and 5×6s maximal sprints (SPR). Cycling trials were undertaken in 33...
May 2016: Journal of Thermal Biology
https://www.readbyqxmd.com/read/27079508/europeanisation-of-health-systems-a-qualitative-study-of-domestic-actors-in-a-small-state
#18
Natasha Azzopardi-Muscat, Kristine Sorensen, Christoph Aluttis, Roderick Pace, Helmut Brand
BACKGROUND: Health systems are not considered to be significantly influenced by European Union (EU) policies given the subsidiarity principle. Yet, recent developments including the patients' rights and cross-border directive (2011/24 EU), as well as measures taken following the financial crisis, appear to be increasing the EU's influence on health systems. The aim of this study is to explore how health system Europeanisation is perceived by domestic stakeholders within a small state...
April 14, 2016: BMC Public Health
https://www.readbyqxmd.com/read/26590465/the-effects-of-acute-versus-chronic-training-status-on-pacing-strategies-of-older-men-in-a-hot-humid-environment
#19
COMPARATIVE STUDY
Eevon Chia, Jack Cannon, Frank E Marino
The combined effects of age and training on the regulation of exercise performance may be confounded by the additional challenge of thermoregulation. Thus, the objective of this study was to compare the pacing strategy of older men who have recently completed 12 weeks of exercise training (acute) to men who have been regularly (>3 times/week) training for at least 6 months (chronic) in a hot, humid environment and to observe disparity, if any, between acute and chronic exercise training on thermoregulation...
October 2015: Journal of Thermal Biology
https://www.readbyqxmd.com/read/26589515/the-role-of-trunk-muscle-strength-for-physical-fitness-and-athletic-performance-in-trained-individuals-a-systematic-review-and-meta-analysis
#20
REVIEW
Olaf Prieske, Thomas Muehlbauer, Urs Granacher
BACKGROUND: The importance of trunk muscle strength (TMS) for physical fitness and athletic performance has been demonstrated by studies reporting significant correlations between those capacities. However, evidence-based knowledge regarding the magnitude of correlations between TMS and proxies of physical fitness and athletic performance as well as potential effects of core strength training (CST) on TMS, physical fitness and athletic performance variables is currently lacking for trained individuals...
March 2016: Sports Medicine
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