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Journal of Human Kinetics

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https://www.readbyqxmd.com/read/28539986/erratum-to-reduced-plantar-sole-sensitivity-facilitates-early-adaptation-to-a-visual-rotation-pointing-task-when-standing-upright
#1
Maxime Billot, Normand Teasdale, Gagné Lemieux Léandre, Mathieu Germain Robitaille, Martin Simoneau
[This corrects the article on p. 65 in vol. 52, PMID: 28149394.].
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469761/lower-leg-length-is-associated-with-running-economy-in-high-level-caucasian-distance-runners
#2
Rauno Laumets, Karel Viigipuu, Kerli Mooses, Jarek Mäestu, Priit Purge, Ando Pehme, Priit Kaasik, Martin Mooses
The aim of the present study was to investigate lower limb anthropometric and composition variables related to running economy (RE) and running performance in a homogeneous group of high level European distance runners. RE at the speeds of 14, 16 and 18 km·h(-1) (189 ± 12; 188 ± 11; 187 ± 11 O2 ml·kg(-1)·km(-1)) and maximal oxygen uptake (VO2max) (67.3 ± 2.9 ml·kg(-1)·min(-1)) of 13 high level distance runners were determined on a motorised treadmill. Anthropometric variables and body composition were measured...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469760/reliability-and-validity-of-a-new-test-of-agility-and-skill-for-female-amateur-soccer-players
#3
Mehmet Kutlu, Hakan Yapici, Abdullah Yilmaz
The aim of this study was to evaluate the Agility and Skill Test, which had been recently developed to assess agility and skill in female athletes. Following a 10 min warm-up, two trials to test the reliability and validity of the test were conducted one week apart. Measurements were collected to compare soccer players' physical performance in a 20 m sprint, a T-Drill test, the Illinois Agility Run Test, change-of-direction and acceleration, as well as agility and skill. All tests were completed following the same order...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469759/factors-determining-success-in-youth-judokas
#4
Goran Kuvačić, Saša Krstulović, Petra Đapić Caput
The aim of this study was to compare two models of determining factors for success in judo. The first model (Model A) included testing motor abilities of high-level Croatian judokas in the cadet age category. The sample in Model A consisted of 71 male and female judokas aged 16 ± 0.6 years who were divided into four subsamples according to sex and weight category. The second model (Model B) consisted of interviewing 40 top-level judo experts on the importance of motor abilities for cadets' success in judo...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469758/frequent-immediate-knowledge-of-results-enhances-the-increase-of-throwing-velocity-in-overarm-handball-performance
#5
Igor Štirn, Jamie Carruthers, Marko Šibila, Primož Pori
In the present study, the effect of frequent, immediate, augmented feedback on the increase of throwing velocity was investigated. An increase of throwing velocity of a handball set shot when knowledge of results was provided or not provided during training was compared. Fifty female and seventy-three male physical education students were assigned randomly to the experimental or control group. All participants performed two series of ten set shots with maximal effort twice a week for six weeks. The experimental group received information regarding throwing velocity measured by a radar gun immediately after every shot, whereas the control group did not receive any feedback...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469757/analysis-of-motor-activities-of-professional-soccer-players-during-the-2014-world-cup-in-brazil
#6
Paweł Chmura, Marcin Andrzejewski, Marek Konefał, Dariusz Mroczek, Andrzej Rokita, Jan Chmura
The aim of the present study was to analyze motor activities of soccer players in seven consecutive rounds of matches of the 2014 World Cup in Brazil and to compare the performance of the world champions, the German national team with other participating teams. The study sample comprised 905 observations of 340 soccer players, who played full-time matches in all seven rounds of the tournament. The study was conducted using data collected from the Castrol Performance Index, a kinematic game analysis system that records movements of players with semi-automatic cameras...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469756/effect-of-core-training-on-male-handball-players-throwing-velocity
#7
Carmen Manchado, José García-Ruiz, Juan Manuel Cortell-Tormo, Juan Tortosa-Martínez
In handball, throwing velocity is considered to be one of the essential factors in achieving the ultimate aim of scoring a goal. The objective of the present study was to analyze the effect of a core training program on throwing velocity in 30 handball players (age 18.7 ± 3.4 years, body height 179.3 ± 7.0 cm, body mass 78.9 ± 7.7 kg), 16 of whom were in the junior category and 14 of whom were in the senior category. The 30 players were randomly divided into two groups, the control group (n = 15) and the experimental group (n = 15)...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469755/can-different-complex-training-improve-the-individual-phenomenon-of-post-activation-potentiation
#8
Zong-Rong Chen, Shin-Liang Lo, Min-Hsien Wang, Ching-Fang Yu, Hsien-Te Peng
The aims of the present study were (a) to determine whether the two types of complex training and vibration complex training would improve the individual phenomenon of post-activation potentiation (PAP) for every athlete in a team setting; and (b) to compare the acute effect of resistance and plyometric exercise, whole body vibration, complex training and vibration complex training on vertical jump performance. The participants were ten male division I college volleyball and basketball players. They were asked to perform three vertical jumps as a pre-test and were then randomly assigned to one of five PAP protocols, resistance exercise using half squat exercise, plyometric exercise using drop jumps with individualized drop height, whole body vibration using squats on a vibration plate, complex training combining resistance exercise with plyometric exercise, vibration complex training combining whole body vibration with plyometric exercise...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469754/effects-of-the-off-season-period-on-field-and-assistant-soccer-referees-physical-performance
#9
Daniel Castillo, Jesús Cámara, Carlo Castagna, Javier Yanci
The evolution of referees' physical fitness has been studied over one or several seasons, however, the variation of the physical performance between the end of the competitive season (T1) and the start of the following pre-season (T2) has not been ascertained. Therefore, the aim of this study was to analyze the effects of the transition period on physical performance variables (i.e. linear straight sprint, change of direction ability and endurance) in National Soccer Division referees. Forty-five Spanish referees volunteered to participate in this study...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469753/the-effect-of-acute-and-chronic-exposure-to-hypobaric-hypoxia-on-loaded-squat-jump-performance
#10
Amador García-Ramos, Paulino Padial, Blanca De la Fuente, Javier Argüelles-Cienfuegos, Juan Bonitch-Góngora, Belén Feriche
The present study aimed (1) to compare loaded squat jump performance after an acute and chronic exposure to a moderate natural altitude between normoxia and hypobaric hypoxia conditions, and (2) to analyze the effect of an altitude training camp on loaded jump squat development. Sixteen male swimmers (17.1 ± 0.8 years) took part in a 17-day training camp at a natural moderate altitude. They were randomly tested in counterbalanced order on days 1 and 3 in normoxia and hypoxia (pretest) and on days 15 and 17 again in normoxia and hypoxia (posttest)...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469752/il-6-antioxidant-capacity-and-muscle-damage-markers-following-high-intensity-interval-training-protocols
#11
Lukas Cipryan
The aim of this study was to investigate changes of interleukin-6 (IL-6), total antioxidant capacity (TAC) and muscle damage markers (creatine kinase (CK), myoglobin and lactate dehydrogenase (LDH)) in response to three different high-intensity interval training (HIIT) protocols of identical external work. Twelve moderately-trained males participated in the three HIIT trials which consisted of a warm-up, followed by 12 min of 15 s, 30 s or 60 s HIIT sequences with the work/rest ratio 1. The biochemical markers of inflammation, oxidative stress and muscle damage were analysed POST, 3 h and 24 h after the exercise...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469751/physiological-acute-response-to-high-intensity-intermittent-and-moderate-intensity-continuous-5-km-running-performance-implications-for-training-prescription
#12
Carolina Cabral-Santos, José Gerosa-Neto, Daniela S Inoue, Fabrício E Rossi, Jason M Cholewa, Eduardo Z Campos, Valéria L G Panissa, Fábio S Lira
The aim of this study was to investigate the physiological responses to moderate-intensity continuous and high-intensity intermittent exercise. Twelve physically active male subjects were recruited and completed a 5-km run on a treadmill in two experimental sessions in randomized order: continuously (70% sVO2max) and intermittently (1:1 min at sVO2max). Oxygen uptake, excess post-exercise oxygen consumption, lactate concentration, heart rate and rating of perceived exertion data were recorded during and after each session...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469750/the-effect-of-previous-wingate-performance-using-one-body-region-on-subsequent-wingate-performance-using-a-different-body-region
#13
Leonie Harvey, Matthew Bousson, Chris McLellan, Dale Lovell
The 30 second Wingate Anaerobic Test (WAnT) is the gold standard measure of anaerobic performance. The present investigation aimed to determine if a previous WAnT using one body region significantly affected a subsequent WAnT using a different body region. Twelve male university students (n = 12, 23 ± 2 years, 84 ± 16.1 kg, 178.5 ± 7.4 cm) volunteered to complete two repeated WAnT protocols (either lower body WAnT followed by an upper body WAnT or vice versa) on two separate testing occasions. The upper body WAnT was conducted on a modified electromagnetically braked cycle ergometer using a flywheel braking force corresponding to 5% bodyweight...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469749/determination-of-aerobic-performance-in-youth-soccer-players-effect-of-direct-and-indirect-methods
#14
Wonder Passoni Higino, Alex de Souza Sorroche, Pedro Guilherme de Mattos Falqueiro, Yuri Cristina Suzuki Lima, Camila Lie Higa
This study was conducted to correlate and compare values for variables determined in indirect tests with the values determined directly in youth soccer players. The study subjects were 27 youth soccer players (age 16.77 ± 0.75 years; body mass 63.29 ± 7.37 kg; body height 174.14 ± 8.46 cm) playing in the basic categories of a first division team at the regional level of Brazilian soccer. Each subject was evaluated with the following tests: a) a treadmill test to directly determine values of VO2max and Vamax (Treadmill); b) an indirect Shuttle Run Test (SRT); c) an indirect Carminatti's test (TCar)...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469748/plasma-actin-gelsolin-and-orosomucoid-levels-after-eccentric-exercise
#15
Éva Tékus, Márk Váczi, Zoltán Horváth-Szalai, Andrea Ludány, Tamás Kőszegi, Márta Wilhelm
The present study investigated the acute effect of eccentric exercise on blood plasma actin, gelsolin (GSN) and orosomucoid (AGP) levels in untrained and moderately trained individuals, and their correlation with exercise induced muscle damage (EIMD) markers (CK, intensity of muscle soreness and maximal voluntary contraction torque deficit). Healthy physical education students (6 untrained, 12 moderately trained) participated in this research. Actin, GSN, AGP and CK levels were measured in blood plasma at baseline, immediately, 1 h, 6 h and 24 h post-exercise comprising 90 eccentric quadriceps contractions performed on a dynamometer...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469747/effects-of-karate-fights-on-achilles-tendon-stiffness-measured-by-myotonometry
#16
Beata Pożarowszczyk, Weronika Pawlaczyk, Małgorzata Smoter, Andrzej Zarzycki, Dariusz Mroczek, Martyna Kumorek, Kazimierz Witkowski, Kawczyński Adam
The aim of the study was to investigate the influence of karate fights on Achilles tendon stiffness in karate competitors. Eleven male karate fighters participated in the present study. A handheld MyotonPRO device (MyotonPRO, Myoton Ltd, Estonia) was applied to measure Achilles tendon stiffness in karate fighters. The Achilles tendon was tested 5 cm above the tuber calcanei. Stiffness measurements were performed before and after eight sparring fights. Each fight lasted 2 min and was separated by a 2 min rest period...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469746/low-carbohydrate-high-fat-diet-can-it-help-exercise-performance
#17
Chen-Kang Chang, Katarina Borer, Po-Ju Lin
Low-carbohydrate-high-fat (LCHF) diets have been used as a means of weight loss and control of symptoms in several clinical conditions. There is emerging evidence that the metabolic changes induced by LCHF diets enhance endurance performance. The aims of this review are to examine the evidence of LCHF diets in improving various aspects of athletic performance. Long-term LCHF dietary intake may help control body weight and fat mass while maintaining lean body mass in athletes in weight-sensitive sports. LCHF-adapted endurance athletes can reach the maximal fat oxidation rate of approximately 1...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469745/adequacy-of-the-ultra-short-term-hrv-to-assess-adaptive-processes-in-youth-female-basketball-players
#18
Fabio Y Nakamura, Lucas A Pereira, Cesar C Cal Abad, Igor F Cruz, Andrew A Flatt, Michael R Esco, Irineu Loturco
Heart rate variability has been widely used to monitor athletes' cardiac autonomic control changes induced by training and competition, and recently shorter recording times have been sought to improve its practicality. The aim of this study was to test the agreement between the (ultra-short-term) natural log of the root-mean-square difference of successive normal RR intervals (lnRMSSD - measured in only 1 min post-1 min stabilization) and the criterion lnRMSSD (measured in the last 5 min out of 10 min of recording) in young female basketball players...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469744/core-muscle-activation-in-suspension-training-exercises
#19
Giovanni Cugliari, Gennaro Boccia
A quantitative observational laboratory study was conducted to characterize and classify core training exercises executed in a suspension modality on the base of muscle activation. In a prospective single-group repeated measures design, seventeen active male participants performed four suspension exercises typically associated with core training (roll-out, bodysaw, pike and knee-tuck). Surface electromyographic signals were recorded from lower and upper parts of rectus abdominis, external oblique, internal oblique, lower and upper parts of erector spinae muscles using concentric bipolar electrodes...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469743/technique-selection-the-coaches-challenge-influencing-injury-risk-during-the-first-contact-hand-of-the-round-off-skill-in-female-gymnastics
#20
Roman Farana, Daniel Jandacka, Jaroslav Uchytil, David Zahradnik, Gareth Irwin
The importance of technique selection on elbow injury risk has been identified for the key round off skill in female gymnastics, with a focus on the second contact limb. The aim of this study was to shift the focus to the first contact limb and investigate the biomechanical injury risk during parallel and T-shape round-off (RO) techniques. Seven international-level female gymnasts performed 10 trials of the RO to back-handspring with parallel and T-shape hand positions. Synchronized kinematic (3D motion analysis system; 247 Hz) and kinetic (two force plates; 1235 Hz) data were collected for each trial...
February 2017: Journal of Human Kinetics
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