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Journal of Sports Medicine and Physical Fitness

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https://www.readbyqxmd.com/read/28880052/effects-of-volleyball-plyometric-intervention-program-on-vertical-jumping-ability-in-male-volleyball-players
#1
Dariusz Mroczek, Krzysztof Maćkała, Adam Kawczynski, Edward Superlak, Paweł Chmura, Tomasz Seweryniak, Jan Chmura
BACKGROUND: This study aimed to investigate the effect of a 6-week plyometric exercise training program on the development of lower limb explosive power in terms of vertical jumping ability in university level volleyball players. The study involved 9 male volleyball players from the AWF Wroclaw University Sports Club, with a minimum of 5 years of training and competition experience. The program consisted of various bounds, hops, and jumps in vertical, horizontal, and mixed directions...
September 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28880051/depression-mediates-the-association-between-physical-inactivity-and-cognitive-impairment-in-korean-older-adults
#2
Youngyun Jin, Jinkyung Cho, Inhwan Lee, Haeryun Hong, Donghyun Kim, Hyunsik Kang
BACKGROUND: This study investigated the association between physical activity and cognitive impairement in older adults. METHODS: Data from 10245 Korean adults (4,428 men and 5,817 women) who participated in the 2008 baseline survey of the living profiles of older people survey were used for this analysis. RESULTS: Compared with low PA men, moderate PA men only had significantly lower odds-ratio (OR) and 95% confidence interval (95% CI) (OR=0...
September 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28880050/effects-of-nanotechnologies-based-devices-on-postural-control-in-healthy-subjects
#3
Giovanna Malchiodi Albedi, Stefano Corna, Valentina Aspesi, Daniela Clerici, Cinzia Parisio, Jonathan Seitanidis, Nicola Cau, Luigia Brugliera, Paolo Capodaglio
BACKGROUND: The aim of the present preliminary randomized controlled study was to ascertain whether the use of newly developed nanotechnologies-based patches can influence posture control of healthy subjects. METHODS: Thirty healthy female subjects (age 39.4 years, BMI 22.74 kg/m2) were randomly assigned to two groups: one with active patches and a control group with sham patches. Two patches were applied with a tape: one on the subject's sternum and the other on the C7 apophysis...
September 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745475/bodypump-versus-traditional-heavy-load-resistance-training-on-changes-in-resting-metabolic-rate-in-overweight-untrained-women
#4
Anne M Rustaden, Christina Gjestvang, Kari Bø, Lene A Hagen Haakstad, Gøran Paulsen
BACKGROUND: Moderate to heavy load resistance training (RT) is advocated for overweight and obese individuals. One of the beneficial effects of RT is increased resting metabolic rate (RMR), which typically makes up the majority of the total daily energy expenditure. It is, however, unclear if low to moderate load RT affects RMR. Hence, the present study aimed to examine the effects of twelve weeks of BodyPump, on RMR in previous untrained women with BMI ≥25.0, and to compare the results with individual heavy load RT...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745474/the-use-of-metabolic-power-to-assess-physical-demands-in-soccer-how-does-it-differ-from-the-traditional-approach-through-speed-running
#5
Francisco I Martínez-Cabrera, Francisco J Núñez-Sánchez
BACKGROUND: Metabolic power and speed running are in the top-10-ranked variables used to quantify the physical demand in soccer matches or training practices. The purpose of this study were 1) to compare metabolic power (MP) and the traditional approach using speed running during soccer matches in absolute values and 2) in zones of intensity in function of the playing positions. METHODS: Thirty-eight professional soccer players were analysed during 18 friendly matches from 4 preseasons (n=300) and divided into 5 groups of playing positions: central defender (CD) (n=64), wide defender (WD) (n=55), central midfielder (CM) (n=58), wide attacker (WA) (n=70) and attacker (AT) (n=53)...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745473/does-the-aerobic-threshold-correlate-with-the-maximal-fat-oxidation-rate-in-short-stage-treadmill-tests
#6
Ratko Peric, Marco Meucci, Pitre C Bourdon, Zoran Nikolovski
BACKGROUND: The aim of this study was to identify the exercise intensity that elicited the highest rate of fat utilization (FATmax) and to assess its relationship with the aerobic threshold (AeT) in male athletes. We hypothesized existence of high correlation of these two parameters when a short-staged graded treadmill test with AeT identified through breath-by-breath gas exchange analysis was used. METHODS: Fifty-six trained male athletes (age 25.6 ± 3.4 y, height 197...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745472/effect-of-eight-weeks-of-upper-body-plyometric-training-during-the-competitive-season-on-professional-female-volleyball-players
#7
David Valades, José M Palao, Pedro Femia, Aurelio Ureña
BACKGROUND: The purpose of this study was to assess the effect of incorporating specific upper-body plyometric training for the spike into the competitive season of a women's professional volleyball team. METHODS: A professional team from the Spanish first division participated in the study. An A-B-A' quasi-experimental design with experimental and control groups was used. The independent variable was the upper-body plyometric training for eight weeks during the competitive season...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745471/visual-control-in-basketball-shooting-under-exertion-conditions
#8
Teresa Zwierko, Marek Popowczak, Jarosław Woźniak, Andrzej Rokita
BACKGROUND: This study examined the effect of physical exertion on gaze behavior during basketball shooting in both stationary and dynamic conditions. METHODS: Thirteen skilled basketball players performed two-point shooting during a 60 second fatigue protocol. Before and after a jump shot test, players performed two free throws. Eye movements were registered using an SMI Mobile EyeTracker. The frequency of all fixation points (number) and fixation duration during the motor phases of shooting were determined using frame-by- frame analysis...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745470/effects-of-taurine-on-markers-of-muscle-damage-inflammatory-response-and-physical-performance-in-triathletes
#9
Bryan S Martinez Galan, Flavia Giolo de Carvalho, Priscila Carvalho Santos, Ronaldo Bucken Gobbi, Carlos Kalva-Filho, Marcelo Papoti, Adelino Sanchez Silva, Ellen C Freitas
BACKGROUND: The practice of prolonged exercise with high intensity, as seen in triathlon training, can cause physiological imbalances that might result in muscle fatigue, muscle damage and changes in systemic inflammatory response, thus reduce the athletes physical performance, therefore, both adequate total caloric and macronutrient intake also the use of a specific ergogenic aid, as taurine supplementation would be an alternative to prevent inflammation and muscle damage. In order to verify the effects of 8 weeks of taurine and chocolate milk supplementation, markers of muscle damage, inflammation, and aerobic capacity were quantified in triathletes...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745469/reliability-of-bounce-drop-jump-parameters-within-elite-male-rugby-players
#10
Lisa Costley, Eric Wallace, Michael Johnston, Rodney Kennedy
BACKGROUND: The aims of the study were to investigate the number of familiarisation sessions required to establish reliability of the bounce drop jump (BDJ) and subsequent reliability once familiarisation is achieved. METHOD: Seventeen trained male athletes completed 4 BDJs in 4 separate testing sessions. Force-time data from a 20 cm BDJ was obtained using two force plates (ensuring ground contact < 250 ms). Subjects were instructed to 'jump for maximal height and minimal contact time' while the best and average of four jumps were compared...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738672/physiological-and-physical-responses-to-wearing-compression-garments-during-soccer-matches-and-recovery
#11
Diego Marqués-Jiménez, Julio Calleja-González, Iñaki Arratibel, Anne Delextrat, Fernando Uriarte, Nicolás Terrados
BACKGROUND: There is not enough information on the effects of compression therapy in soccer players during recovery after matches. So the objective of this study was to examine the effect of wearing compression garments during soccer matches and during recovery period on physical responses. METHODS: Eighteen semi-professional soccer players participated in this study. A two-stage crossover design was chosen. Participants acted as controls in one match and were assigned to an experimental group (compression stockings group, full-leg compression group, shorts group) in the other match...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738671/inertial-flywheel-resistance-training-and-muscle-oxygen-saturation
#12
Rafael Timón, Jesús G Ponce-González, José L González-Montesinos, Guillermo Olcina, Alejandro Pérez-Pérez, José Castro-Piñero
BACKGROUND: The inertial flywheel device causes an increase in eccentric overload during training. The aim was to study muscle oxygen saturation produced during an inertial flywheel squat training, comparing it with a barbell squat training. METHODS: Twelve male adults performed a barbell squat training (3 x 8 reps, 75-80% 1RM) and a flywheel squat training (3 x 8 reps, all-out). Muscle oxygen saturation (%SmO2), total hemoglobin (tHb), reoxygenation, heart rate (HR), lactate, vertical jumps, maximal voluntary isometric contraction and rated perceived exertion (RPE) were studied...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738670/antidoping-program-an-important-factor-in-the-promotion-and-protection-of-the-integrity-of-sport-and-athlete-s-health
#13
Filomena Mazzeo, Vincenzo Monda, Stefania Santamaria, Ersilia Nigro, Anna Valenzano, Ines Villano, Giuseppe Cibelli, Antonietta Messina, Giovanni Messina
Use of performance-enhancing drugs concern not only elite Olympic and Paralympic Games' athletes but also amateur athletes, who are making increasing use of substances and/or methods. Furthermore, a new frontier reached by the doping is the use of genes. World Anti- Doping Agency (WADA), expressly prohibited the participation in competitive sports by the athlete in case of taking banned substances to treat disease in the event that the above assumption implies an excessive improvement of performance. This study aims to analyze and show the doping control as an essential part of the anti-doping program to promote and protect the integrity of sport and athlete's health...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738669/evaluation-of-the-effectiveness-of-a-transfer-interhemispheric-training-programme-in-the-early-stages-of-fencing-training
#14
Mateusz Witkowski, Michał Bronikowski, Agnieszka Nowik, Maciej Tomczak, Jan Strugarek
BACKGROUND: A high level of motor coordination (with an emphasis on the accuracy of hand movements) is an important part of fencers' training. Research on motor coordination shows that both hemispheres of the brain are involved in controlling the action of each of the upper limbs. As the physical training of one hand is believed to significantly increase the performance of the other (untrained) hand [14], the authors attempt to verify the hypothesis that specialized training of the nondominant limb can improve the performance of the dominant hand in fencing...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738668/study-of-effects-of-multimodal-exercise-programme-on-physical-fitness-and-health-perception-in-community-living-hungarian-older-adults
#15
Anikó Virág, Izabella Harkányi, Csilla K Karóczi, Zsolt Vass, Éva Kovács
AIM: The aim of this study was to investigate the effects on fitness indicators and subjective health-perception of a multimodal exercise programme provided by a district in Budapest among community-living seniors. METHODS: Sixty community-living older adults aged over 60 years formed beginner group (who were at the beginning of the exercise programme), advanced group (who had been in the programme for 3-6 months), active group (who had been participating in the exercise programme for at least 6 months, in addition to Nordic Walking programme) and a physically inactive control group...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738667/toe-grip-strength-in-middle-aged-individuals-as-a-risk-factor-for-falls
#16
Ryota Tsuyuguchi, Satoshi Kurose, Takayuki Seto, Nana Takao, Satoshi Tagashira, Hiromi Tsutsumi, Shingo Otsuki, Yutaka Kimura
BACKGROUND: Toe grip strength is the force of a toe on a surface. The objective of this study was to investigate the relationship between falls in middle-aged individuals and physical strength factors such as toe grip strength and knee extension strength. METHODS: The subjects were 194 middle-aged individuals (388 feet) who were independent in daily life, received no nursing care, and participated in a health sports event organized by a sports club. We evaluated the body composition, blood pressure, vascular age, systemic response, bone density, knee extension strength, and toe grip strength, and examined their relationship using a self-administered questionnaire survey...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28738666/influence-of-kitesurf-equipment-on-injury-rates
#17
Sebastian F Baumbach, Tanja Stawinski, Daniel Schmitz, Carsten Schoeneberg, Marcus Jäger, Christian Wedemeyer, Max D Kauther
BACKGROUND: Various injuries in kitesurfing (KS) have been reported so far. The aim of this study was to validate the effect of different kite designs and safety equipment on the injury rate compared to older studies. METHODS: A retrospective epidemiological study based on an anonymous face-to-face survey was conducted amongst active kitesurfers. The questionnaire consisted of 66 questions focusing on the equipment used, injury rates, overuse injuries and gender differences...
July 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28677946/effects-of-probiotics-supplementation-and-circuit-training-on-immune-responses-among-sedentary-young-males
#18
Nur S Ibrahim, Foong K Ooi, Chee K Chen, Ayu S Muhamad
BACKGROUND: Growing evidence suggests that probiotics may have positive benefits on immune responses following endurance exercise. However, little attention has been given to its possible beneficial effects on immune responses following resistance exercise. METHODS: Forty-one healthy sedentary males were recruited and randomised into four groups: sedentary control with placebo (C), probiotics (P), circuit training with placebo (Ex), and circuit training with probiotics (PEx) groups...
July 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28677945/within-person-relationship-between-self-efficacy-and-performance-across-trials-effect-of-task-objective-and-task-type
#19
Teri J Hepler, Jason Ritchie, Christopher R Hill
BACKGROUND: Self-efficacy has been shown to be a consistent, positive predictor of between-persons performance in sport. However, there have been equivocal results regarding the influence of self-efficacy on a person's performance over time. This study investigated the influence of self-efficacy on motor skill performance across trials with respect to two different task objectives and task types. METHODS: Participants (N=84) performed 4 blocks of 10 trials of a dart throwing (closed skill) and a hitting (open skill) task under 2 different task objectives: competitive and goal-striving...
July 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28677944/heart-rate-response-and-recovery-in-wheelchair-tetraplegic-rugby-athletes-a-pilot-study
#20
Michelle C Coutinho, Patrícia S Vigário, Agnaldo J Lopes, Fernando S Guimarães
BACKGROUND: Subjects with spinal cord injuries (SCI) have impaired autonomic cardiac regulation and increased risk of cardiovascular disease. In face of the insufficient research data on the autonomic control of physically active subjects with SCI, this study aimed at describing the chronotropic response, as well as the heart rate recovery behaviour of a cohort of elite wheelchair rugby athletes. METHODS: This is a cross-sectional study including a convenience sample of 17 elite wheelchair rugby athletes with tetraplegia...
July 5, 2017: Journal of Sports Medicine and Physical Fitness
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