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European Journal of Sport Science

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https://www.readbyqxmd.com/read/28152673/effects-of-adding-a-weekly-eccentric-overload-training-session-on-strength-and-athletic-performance-in-team-handball-players
#1
Rafael Sabido, Jose Luis HernáNdez-Davó, Javier Botella, Angel Navarro, Julio Tous-Fajardo
To investigate the influence of adding a weekly eccentric-overload training (EOT) session in several athletic performance's tests, 18 team-handball players were assigned either to an EOT (n = 11) or a Control (n = 7) group. Both groups continued to perform the same habitual strength training, but the EOT group added one session/week during a 7-week training programme consisting of four sets of eight repetitions for the bilateral half-squat and unilateral lunge exercises. The test battery included handball throwing velocity, maximum dynamic strength (1RM), countermovement jump (CMJ), 20 m sprint, triple hop for distance, and eccentric/concentric power in both the half-squat and lunge exercises...
February 2, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28120641/assessment-of-subcutaneous-adipose-tissue-using-ultrasound-in-highly-trained-junior-rowers
#2
Anne Kelso, Emese Trájer, Katja Machus, Gunnar Treff, Wolfram Müller, Jürgen M Steinacker
INTRODUCTION: There is a large variety of body fat (BF) measurements, which differ in validity and reliability. The aim of this study was to measure subcutaneous adipose tissue (SAT) using ultrasound (US) in highly trained junior rowers in a field setting, establish fat patterning profiles, and compare the profiles between male and female athletes. Skinfold thickness (SKF) measurements were also taken and compared to US measurements. METHODS: Sixteen athletes participated...
January 25, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28100164/relation-between-arterial-stiffness-and-aerobic-capacity-importance-of-proximal-aortic-stiffness
#3
Tsubasa Tomoto, Seiji Maeda, Jun Sugawara
Brachial-ankle pulse wave velocity (baPWV) has become a popular modality of arterial stiffness measurement. However, its projected arterial segment does not include the proximal aorta which plays important roles for attenuating cardiac pulsation and reducing afterload. We hypothesised that aerobic capacity would be more strongly associated with PWV including the proximal aorta than that omitting the proximal aorta. To test our hypothesis, we compared the association between aerobic capacity and arterial stiffness parameters omitting vs...
January 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28100130/influence-of-cold-water-immersion-on-limb-blood-flow-after-resistance-exercise
#4
Chris Mawhinney, Helen Jones, David A Low, Daniel J Green, Glyn Howatson, Warren Gregson
This study determined the influence of cold (8°C) and cool (22°C) water immersion on lower limb and cutaneous blood flow following resistance exercise. Twelve males completed 4 sets of 10-repetition maximum squat exercise and were then immersed, semi-reclined, into 8°C or 22°C water for 10-min, or rested in a seated position (control) in a randomized order on different days. Rectal and thigh skin temperature, muscle temperature, thigh and calf skin blood flow and superficial femoral artery blood flow were measured before and after immersion...
January 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28100122/using-the-self-determination-theory-to-understand-chinese-adolescent-leisure-time-physical-activity
#5
Lijuan Wang
PURPOSES: This study applies the self-determination theory (SDT) to test the hypothesized relationships among perceived autonomy support from parents, physical education (PE) teachers, and peers, the fulfilment of psychological needs (i.e., autonomy, competence, and relatedness), autonomous motivation, and leisure-time physical activity of Chinese adolescents. METHOD: There are 255 grade six to eight student participants from four middle schools around Shanghai, China included in this study...
January 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28100124/compelling-overuse-injury-incidence-in-youth-multisport-athletes
#6
Abdallah Rejeb, Amanda Johnson, Roel Vaeyens, Cosmin Horobeanu, Abdulaziz Farooq, Erik Witvrouw
The present investigation was carried out to examine the incidence and pattern of injuries in adolescent multisport athletes from youth sports academy. Injury data were prospectively collected from 166 athletes during the seasons from 2009 to 2014. A total of 643 injuries were identified, 559 (87.0%) were time-loss injuries. The overall injury incidence was 5.5 (95% confidence interval CI: 5.1-6.0), the incidence of time-loss injuries was 4.8 (95% CI: 4.4-5.2), the incidence of growth conditions was 1.2 (95% CI: 1...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28100123/relay-exchanges-in-elite-short-track-speed-skating
#7
Andrew Hext, Ben Heller, John Kelley, Simon Goodwill
In short track speed skating, the relay exchange provides an additional strategic component to races by allowing a team to change the skater involved in the pack race. Typically executed every 1½ laps, it is the belief of skaters and coaches that during this period of the race, time can be gained or lost due to the execution of the relay exchange. As such, the aim of this study was to examine the influence of the relay exchange on a team's progression through a 5000 m relay race. Using data collected from three World Cup relay events during the 2012-2013 season, the time taken to complete the straight for the scenarios with and without the relay exchange were compared at different skating speeds for the corner exit prior to the straight...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28099092/training-and-development-of-canadian-wheelchair-basketball-players
#8
N Dehghansai, S Lemez, N Wattie, J Baker
Considering the growth in research, examining the development of mainstream sport athletes over the past two decades, studies examining development of athletes with disabilities have been surprisingly limited. While similarities in developmental trajectories between the two cohorts may exist regarding factors such as the value of practice, which tend to be universal regardless of context, disability-related issues (e.g. whether the disability was congenital or acquired) may influence the course of development, affecting variables such as starting age, training and developmental milestones...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28099086/maximal-heart-rate-declines-linearly-with-age-independent-of-cardiorespiratory-fitness-levels
#9
Cemal Ozemek, Mitchell H Whaley, W Holmes Finch, Leonard A Kaminsky
There have been many conflicting observations between the linear or curvilinear decline in maximal heart rate (HRmax) with age. The aim of this study was to determine if linear or curvilinear equations would better describe the decline in HRmax with age in individuals of differing cardiorespiratory fitness (CRF) levels. Treadmill cardiopulmonary exercise test (CPX) results from participants (1510 men and 1134 women; 18-76 years) free of overt cardiovascular disease were retrospectively examined using cross-sectional and longitudinal study designs...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28068210/how-players-exploit-variability-and-regularity-of-game-actions-in-female-volleyball-teams
#10
Ana Ramos, Patrícia Coutinho, Pedro Silva, Keith Davids, Isabel Mesquita
Variability analysis has been used to understand how competitive constraints shape different behaviours in team sports. In this study, we analysed and compared variability of tactical performance indices in players within complex I at two different competitive levels in volleyball. We also examined whether variability was influenced by set type and period. Eight matches from the 2012 Olympics competition and from the Portuguese national league in the 2014-2015 season were analysed (1496 rallies). Variability of setting conditions, attack zone, attack tempo and block opposition was assessed using Shannon entropy measures...
January 9, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28068193/the-improvement-in-walking-speed-induced-by-resistance-training-is-associated-with-increased-muscular-strength-but-not-skeletal-muscle-mass-in-older-women
#11
Leandro Santos, Alex S Ribeiro, Brad J Schoenfeld, Matheus A Nascimento, Crisieli M Tomeleri, Mariana F Souza, Fábio L C Pina, Edilson S Cyrino
OBJECTIVE: The purpose of the present study was to analyze whether improvements in fast walking speed induced by resistance training (RT) are associated with changes in body composition, muscle quality, and muscular strength in older women. METHODS: Twenty-three healthy older women (69.6 ± 6.4 years, 64.95 ± 12.9 kg, 1.55 ± 0.07 m, 27.06 ± 4.6 kg/m²) performed a RT program for 8 weeks consisting of 8 exercises for the whole body, 3 sets of 10-15 repetitions maximum, 3 times a week...
January 9, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28038503/hiking-strap-force-decreases-during-sustained-upwind-sailing
#12
R Buchardt, J Bay, J Bojsen-Møller, N B Nordsborg
The hypothesis, that sailing upwind in wind speeds above 12 knots causes fatigue, which manifests as a reduction in exerted hiking strap force and/or maximal isometric voluntary contraction force (MVC) of the knee extensors, was evaluated. Additionally, it was investigated if a relationship exists between maximal exerted hiking force (hMVC) and sailing performance. In part 1 of the study, 12 national level athletes sailed upwind for 2 × 10 min while hiking strap forces were continuously acquired. Before, in between and after sailing periods, the MVC of the knee extensors was measured...
December 30, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/28038502/interaction-between-motor-ability-and-skill-learning-in-children-application-of-implicit-and-explicit-approaches
#13
Jon P Maxwell, Catherine M Capio, Rich S W Masters
The benefits of implicit and explicit motor learning approaches in young adults have been studied extensively, but much less in children. This study investigated the relationship between fundamental motor ability and implicit/explicit learning in children using the errorless learning paradigm. First, the motor ability of 261 children (142 boys, 119 girls) aged 9-12 years (M = 9.74, SD = 0.67) was measured. Second, children with motor ability scores in the upper and lower quartile learned a golf-putting skill in either an errorless (implicit) or errorful (explicit) learning condition...
December 30, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/28038501/the-impact-of-physical-growth-and-relative-age-effect-on-assessment-in%C3%A2-physical-education
#14
Terje Dalen, Rolf Petter Ingvaldsen, Truls Valland Roaas, Arve Vorland Pedersen, Ingebrigt Steen, Tore Kristian Aune
Physical education (PE) is perhaps the school subject most likely to produce relative age effects (RAE). Like in sports, physical maturity gives students an advantage in PE, which might well be mistaken for superior ability. The aim of the present study is to investigate the extent to which physical growth, measured as height, and RAE reflect the assessment in Norwegian PE. Furthermore, we wanted to examine whether there is any gender differences in the assessment in PE as a function of physical growth and RAE...
December 30, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27996694/no-effect-of-acute-and-chronic-supramaximal-exercise-on-circulating-levels-of-the-myokine-sparc
#15
Preeyaphorn Songsorn, José Ruffino, Niels B J Vollaard
Myokines may play a role in the health benefits of regular physical activity. Secreted protein acidic rich in cysteine (SPARC) is a pleiotropic myokine that has been shown to be released into the bloodstream by skeletal muscle in response to aerobic exercise. As there is evidence suggesting that SPARC release may be linked to glycogen breakdown and activation of 5' adenosine monophosphate-activated protein kinase, we hypothesised that brief supramaximal exercise may also be associated with increased serum SPARC levels...
December 20, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27923330/the-influence-of-race-length-on-arterial-compliance-following-an-ultra-endurance-marathon
#16
Alis Bonsignore, Shannon S D Bredin, Holly Wollmann, Barb Morrison, Andrew Jeklin, Lauren Buschmann, Josh Robertson, Elizabeth Jean Buckler, Duncan McGuinty, Mark S Rice, Darren E R Warburton
There is inconclusive evidence concerning the effects of routine participation in ultra-endurance events on cardiovascular disease (CVD) risk. Arterial compliance is a reliable, non-invasive, and effective tool for evaluating CVD risk. The purpose of this research was to examine if race length influences acute changes in arterial compliance following an ultra-marathon event. A total of 46 ultra-marathon runners were recruited including 21 participants (39.8 ± 8.3 years, 6 females) in the 80-km event and 25 participants (43...
December 7, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27927073/the-importance-of-cohesion-and-enjoyment-for-the-fitness-improvement-of-8-10-year-old-children-participating-in-a-team-and-individual-sport-school-based-physical-activity-intervention
#17
RANDOMIZED CONTROLLED TRIAL
Anne-Marie Elbe, Johan Michael Wikman, Miky Zheng, Malte Nejst Larsen, Glen Nielsen, Peter Krustrup
This study investigates the enjoyment and cohesion of school children participating in a school-based high-intensity physical activity (PA) intervention. Both enjoyment and cohesion have been found to be important factors for adherence to regular physical and sport activity, an important outcome of PA interventions. The sample consisted of 300 pupils (mean age: 9.3 years; 52.7% female) assigned to a team sport intervention, an individual sport intervention, or a control group for 10 months. The Physical Activity Enjoyment Scale and Youth Sport Environment Questionnaire were used to measure enjoyment and cohesion...
April 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/27912681/how-valid-are-wearable-physical-activity-trackers-for-measuring-steps
#18
Hyun-Sung An, Gregory C Jones, Seoung-Ki Kang, Gregory J Welk, Jung-Min Lee
Wearable activity trackers have become popular for tracking individual's daily physical activity, but little information is available to substantiate the validity of these devices in step counts. Thirty-five healthy individuals completed three conditions of activity tracker measurement: walking/jogging on a treadmill, walking over-ground on an indoor track, and a 24-hour free-living condition. Participants wore 10 activity trackers at the same time for both treadmill and over-ground protocol. Of these 10 activity trackers three were randomly given for 24-hour free-living condition...
April 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/27863460/the-effects-of-a-three-year-integrated-olympic-education-programme-on-adolescents-prosocial-behaviours
#19
RANDOMIZED CONTROLLED TRIAL
Saulius Sukys, Daiva Majauskiene, Audrone Dumciene
The concept of Olympic education and its use of moral education to shape the development of personality have received insufficient empirical support. The aim of this study was to examine the effects of an integrated Olympic education programme on the development of prosocial behaviour in adolescents. A natural experimental research design was applied in this study. The pre-test sample included 411 adolescents (aged 13-14) who were randomly selected from schools that had begun to apply an integrated Olympic education programme, along with 430 adolescents from schools without an Olympic education programme...
April 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/27839238/effects-of-a-structured-midsole-on-spatio-temporal-variables-and-running-economy-in-overground-running
#20
RANDOMIZED CONTROLLED TRIAL
Tobias Wunsch, Josef Kröll, Thomas Stöggl, Hermann Schwameder
Research to enhance running performance has led to the design of a leaf spring-structured midsole shoe (LEAF). In treadmill running, it has been shown that LEAF led to an increased running economy and increased stride length (SL) through a horizontal foot shift during stance compared to a standard foam shoe (FOAM). The purpose of this study was to analyse whether (a) these findings can also be observed in overground running and (b) relations exist between spatio-temporal variables and running economy. Ten male long-distance heel-strike runners ran at their individual 2 mmol/l blood lactate speed with LEAF and FOAM in randomized order...
April 2017: European Journal of Sport Science
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