Journal of Human Kinetics
Papers 1176
1 page of 118 pages (1,176 results)
#1Osamu Yanagisawa (Jobu University)H-Index: 8
#2Atsuki Fukutani (Rits: Ritsumeikan University)H-Index: 6
: We aimed to compare dynamic exercise performance between hip extension exercises with different knee angles and between knee flexion exercises with different hip angles, and to investigate the recruitment pattern of the hamstrings in each exercise. Seven men performed 4 isokinetic exercises (3 maximal concentric contractions at 30°/s (peak torque) and 30 maximal concentric contractions at 180°/s (total work)): hip extension with the knee fully extended (HEke) and with the knee flexed at 90° (H...
#1Guillaume Ravé (French Institute of Health and Medical Research)H-Index: 1
#2Hassane ZouhalH-Index: 21
Last. Jacques-Olivier Fortrat (French Institute of Health and Medical Research)H-Index: 19
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: Heart Rate Variability (HRV) has been typically used to monitor athletes' physical fitness readiness. The supine position maximizes parasympathetic tone, which is important for monitoring in continuous aerobic sports, however, this is not the case of team sports that rely on anaerobic intermittent bouts, thus increasing sympathetic activation and vagal withdrawal. We hypothesized that HRV during sympathetic activation and vagal withdrawal would be a useful marker to evaluate perceived physical...
#1Mohammad Fayiz Abumohd (YU: Yarmouk University)
#2Laila Mahmoud Matalqah (YU: Yarmouk University)
Last. Zainalabidden Al-Abdulla (YU: Yarmouk University)
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: The aim of this study was to investigate the effects of oral branched-chain amino acids (BCAAs) intake on muscular (creatine kinase and myoglobin) and central (serotonin) fatigue during an incremental exercise protocol and to determine the time to exhaustion. Sixteen male long-distance runners (25.7 ± 2.0 yrs) performed two trials, 14 days apart. Using a double-blind, placebo-controlled, randomised crossover design, participants ingested either 20 g of BCAAs (BCAA trial) or a placebo 1 hour pr...
#1P. PrinsH-Index: 2
#2Andrew P. KoutnikH-Index: 7
Last. D. Ault
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: Numerous oral ketone supplements are marketed with the claim that they will rapidly induce ketosis and improve exercise performance. The purpose of this study was to assess exercise performance time and related physiological, metabolic and perceptual responses of recreational endurance runners after ingestion of a commercially available oral ketone supplement. Recreational endurance runners (n = 10; age: 20.8 ± 1.0 years; body mass: 68.9 ± 5.6 kg; height: 175.6 ± 4.9 cm) participated in a doub...
#1Sofia Canossa (University of Porto)H-Index: 2
#2José Arturo Abraldes (University of Murcia)
Last. Júlio Garganta (University of Porto)H-Index: 18
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: Shooting performance of globally ranked winning, drawing and losing water polo teams was compared, and technical and tactical success indicators were identified. In total, 886 shots from a world championship final round were videotaped and teams were clustered for a performance evaluation (considering differences between game outcomes). Shooting speeds were assessed by a radar, with higher values observed at further distances from the goal than in the central area close to the goal (p ≤ 0.00, ...
: Personality traits, especially in sport are modulatory factors of athletes' behavior - his/ her conscientiousness, the will to achieve an aim, perseverance and motivation of activity. Not only are biological predispositions related to anatomical or biochemical traits of success, but they are also largely determined by personality traits that result from genetic factors. In our research we joined tests of athlete's personality in correlation with genotypes of the dopamine transporter (DAT1) gen...
#1Felipe García Pinillos (UFRO: University of La Frontera)H-Index: 9
#2Daniel Jerez-Mayorga (Andrés Bello National University)H-Index: 1
Last. Luis E. Roche-SeruendoH-Index: 3
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: This study aimed to analyse the effects of running velocity on spatiotemporal parameters and step variability in amateur endurance runners, according to sex. A group of 51 males and 46 females performed an incremental running test on a treadmill (10-16 km/h). Spatiotemporal parameters (contact and flight time, step length, step frequency and step angle [CT, FT, SL, SF, SA]) and step variability, in terms of within-participant standard deviation (SD), were recorded through the OptoGait System. ...
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#1Bogdan BacikH-Index: 8
Last. Marek Gzik (Silesian University of Technology)H-Index: 8
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: Understanding the structure and variability of motion is essential for sports technique development and an effective training design. Biomechanical analysis is particularly important in new disciplines with spatially complex motions, such as snowboarding. This study aimed to evaluate the level of variability of the kinematic variables in a single backside snowboard flip known as a "wildcat". Forty-six correct flips performed by 7 experienced athletes (age: 24.9 ± 4.34 year; body mass: 71.6 ± 1...
#1Sang-Ho Lee (Kosin University)H-Index: 1
#2Elizabeth J. Pekas (UNO: University of Nebraska Omaha)H-Index: 2
Last. Song-Young Park (UNO: University of Nebraska Omaha)H-Index: 12
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: Aspirin is a common nonsteroidal anti-inflammatory drug used to reduce fever, pain, and inflammation. However, aspirin's anti-inflammatory properties may also prevent increased levels of blood lactate dehydrogenase, vascular arterial stiffness and oxidative stress induced by high-intensity exercise. The purpose of this study was to investigate the effects of 4 weeks of aspirin supplementation on lactate dehydrogenase activity, lactate, arterial stiffness, and antioxidant capacity during high-i...
#1Dany Alexis Sobarzo Soto (Universidad Santo Tomás)
#2Esteban Aedo-Muñoz (Usach: University of Santiago, Chile)
Last. Bianca Miarka (UFRJ: Federal University of Rio de Janeiro)H-Index: 14
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: The aim of the study was to compare motor action variables of judo combat phases and technical biomechanical assessment of the seven weight categories. The sample was composed of 638 bouts (176 of extra lightweight 73 kg, 180 of lightweight 73 > 81 kg, 244 of half middleweight 81 > 90 kg, 174 of middleweight 81 > 90 kg, 151 of half heavyweight 90 > 100 kg and 142 of heavyweight >100 kg) during motor actions of approach, gripping, attack, defense and groundwork combat phases, verifying the inte...
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Physical therapy