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Journal of Sports Medicine and Physical Fitness

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https://www.readbyqxmd.com/read/28488837/allometric-associations-between-body-size-shape-and-100-m-butterfly-speed-performance
#1
Senda Sammoud, Alan M Nevill, Yassine Negra, Raja Bouguezzi, Helmi Chaabene, Younés Hachana
BACKGROUND: This study aimed to estimate the optimal body size, limb--segment length, and girth or breadth ratios associated with 100--m butterfly speed performance in swimmers. METHODS: One--hundred--sixty-seven swimmers as subjects (male: n=103; female: n=64). Anthropometric measurements comprised height, body--mass, skinfolds, arm-span, upper--limb--length, upper--arm, forearm, hand--lengths, lower--limb--length, thigh--length, leg--length, foot--length, arm--relaxed--girth, forearm--girth, wrist--girth, thigh--girth, calf--girth, ankle--girth, biacromial and biiliocristal--breadths...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488836/effects-of-low-load-resistance-exercise-with-blood-flow-restriction-on-intramuscular-hemodynamics-oxygenation-level-and-water-content
#2
Osamu Yanagisawa, Atsuki Fukutani
BACKGROUND: Muscle metabolism during and after low-load blood flow restriction (BFR) exercise should be further investigated to clarify the mechanism by which the exercise leads to muscle hypertrophy, and increases strength and endurance. We aimed to investigate the effects of low-load resistance exercise with BFR on intramuscular hemodynamics, oxygenation level, and water content. METHODS: Seven men performed ankle plantar flexion exercise (120 repetitions, 30% one repetition maximum) using a custom-made device with and without BFR inside a magnetic resonance scanner...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488835/incidence-of-injury-and-illness-in-south-african-professional-male-football-players-a-prospective-cohort-study
#3
Helen Bayne, Martin Schwellnus, Dina Janse Van Rensburg, Jhano Botha, Lervasen Pillay
BACKGROUND: Medical illnesses and sports-related injuries both have an effect on athlete health and performance. Epidemiology of injury and illness has been extensively researched during international football tournaments and the European football season. Reports on injury location and severity differ across geographical regions, and there is limited information on injury epidemiology in African football leagues. No studies have investigated the illness burden in football in Africa. METHODS: This was a prospective cohort study involving two football teams over the 10- month duration of the 2015/16 Premier Soccer League in South Africa...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488834/the-efficacy-of-wearable-activity-tracking-technology-as-part-of-a-weight-loss-program-a-systematic-review
#4
Scott W Cheatham, Kyle R Stull, Mike Fantigrassi, Ian Motel
INTRODUCTION: The world obesity rate has increased over the past two decades. This problem has been linked to inactivity and lack of exercise among individuals which prompted the development of wearable activity tracking technology. This technology is commonly offered as a bracelet, watch, or pendent that provides feedback of daily activity such as total step count, heart rate, and energy expenditure. Despite the popularity of these devices, their efficacy to assist in behavior change and weight loss is still being studied...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488833/the-feasibility-of-an-exercise-program-for-individuals-12-months-post-stroke-in-a-small-urban-community
#5
David Jagroop, Amy Maebrae-Waller, Shilpa Dogra
BACKGROUND: There are few community-based exercise programs catering to individuals post-stroke, despite an increasing need. The primary objective of this study was to assess the feasibility of running a community-based exercise program for individuals post-stroke, and to provide a framework for local communities to run similar programs. METHODS: Individuals who had a stroke within 12 months of the start of the program were eligible to participate in a 9-week community-based exercise program...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488832/road-to-the-olympics-physical-fitness-of-medalists-of-the-canoe-sprint-junior-european-and-world-championship-events-over-the-past-20-years
#6
Viktor Bielik, Leonard Lendvorský, Lukáš Lengvarský, Peter Lopata, Róbert Petriska, Jana Pelikánová
BACKGROUND: In this article we aimed to find out whether there is a difference in physiological, anthropometric and power variables between medalists in junior international Championship events (MJCH) and the remaining members of the national team (NT) in flat water canoe sprint. METHODS: Sixty male junior kayakers from Slovak NT were tested annually between years 1995 and 2016. Sixteen of them won at least one medal (gold, silver or bronze) at junior international Championship...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488831/reduced-leptin-level-is-independently-of-fat-mass-changes-and-hunger-scores-from-high-intensity-intermittent-plus-strength-training
#7
Daniela S Inoue, Valéria L Gonçalves Panissa, Barbara Mello Antunes, Flaviane Poleto de Oliveira, Raoni Bernardes Malta, Renan Santos Caldeira, Eduardo Zapaterra Campos, Gustavo Duarte Pimentel, Emerson Franchini, Fábio Santos Lira
BACKGROUND: This study aimed to analyze the effects of high-intensity intermittent training (HIIT) plus strength training on body composition, hormone related to energetic balance (leptin), and hunger scores in physically active non-obese men. METHODS: Sixteen men were allocated in two different groups, training group (n=10) performed a combined HIIT (5 km, 1 min of effort interspersed by 1 min of rest in passive recovery) followed by strength exercise session (three sets, with load of 8-12 repetition maximum) twice a week, during 8 weeks, while control group (n=6) did not suffer any intervention...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488830/match-outcome-and-sprinting-activities-in-match-play-by-elite-german-soccer-players
#8
Marcin Andrzejewski, Paweł Chmura, Marek Konefał, Edward Kowalczuk, Jan Chmura
PURPOSE: The aim of the study was to examine the ways playing positions and match outcome (i.e. win, draw, loss) affect the sprint distance covered and the number of sprints performed by German Bundesliga soccer players. METHODS: Match performance data were collected from 350 soccer players competing in the German Bundesliga during the 2014/2015 domestic season. A total of 4393 individual match observations were undertaken on outfield players. The analysis was carried using the Impire AG motion analysis system with records of all movements of players in all the 306 matches...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488829/analyzing-the-relationship-between-anthropometric-and-motor-indices-with-basketball-specific-pre-planned-and-non-planned-agility-performances
#9
Miran Pehar, Nedim Sisic, Damir Sekulic, Milan Coh, Ognjen Uljevic, Miodrag Spasic, Ante Krolo, Kemal Idrizovic
BACKGROUND: Although agility is an important quality in basketball, factors associated with basketball specific pre-planned-agility (change-of-direction-speed - CODS) and non- planned-agility (reactive agility - RA) are rarely investigated. The aim of this study was to evaluate relationship between anthropometric and motor indices with basketball-specific CODS and RA in male basketball players of high performance level. METHODS: We tested 88 high-level male basketball players (height: 194...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488828/effects-of-active-recovery-during-interval-training-on-plasma-catecholamines-and-insulin
#10
Harutiun M Nalbandian, Zsolt Radak, Masaki Takeda
BACKGROUND: Active recovery has been used as a method to accelerate the recovery during intense exercise. It also has been shown to improve performance in subsequent exercises, but little is known about its acute effects on the hormonal and metabolic profile. The aim of this research was to study the effects of active recovery on plasma catecholamines and plasma insulin during a high-intensity interval exercise. METHODS: 7 subjects performed two high-intensity interval training protocols which consisted of three 30 s high-intensity bouts (constant intensity), separated by a recovery of 4 minutes...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488827/water-versus-land-based-exercises-as-physical-training-programs-in-elderly
#11
Elvira Padua, Francesca Campoli, Vincenzo Manzi, Michele Panzarino, Mauro Lombardo, Giovanni Melchiorri, Virginia Tancredi, Pietro Lebone, Francesco Palazzo, Giuseppe Annino
BACKGROUND: The study aims to analyze and quantify the improvements of some physical skills in a group of subjects over 65 years old who practice regular activities in the gym and in a microgravity environment. METHODS: 132 subjects (68.9 ± 5.5 yrs, 72.7 ± 14.4 kg, 155.3 ± 9.2, 30.6 ± 5 kg/m2) who perform regular physical activity adapted and controlled for the elderly twice a week (50' per session) for a period of 8 months. The tests evaluate flexibility, abdominal and leg strength and balance...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488826/soccer-training-high-intensity-interval-training-is-mood-disturbing-while-small-sided-games-ensure-mood-balance
#12
Okba Selmi, Monoem Haddad, Lina Majed, Wissam Ben Khalifa, Marzougui Hamza, Karim Chamari
BACKGROUNDː The aim of the study was to compare the effects of high-intensity intermittent training (HIIT) versus small-sided games (SSG) in soccer on both the physiological responses and the mood state of players. METHODS: Sixteen professional soccer players took part in the study (age: 24.1±0.9 years). Testing of players was conducted on separate days in a randomized and counter-balanced order (each training session: 28-min: 4x4 minutes work with 3-min of passive recovery in-between)...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488825/a-randomized-trial-of-the-effects-of-an-aquatic-exercise-program-on-depression-anxiety-levels-and-functional-capacity-in-of-people-who-suffered-an-ischemic-stroke
#13
Felipe J Aidar, Ricardo Jacó de Oliveira, Dihogo Gama de Matos, Philip D Chilibeck, Raphael F de Souza, André L Carneiro, Victor Machado Reis
BACKGROUND: Aquatic exercise programs are used in rehabilitation and might help to reduce disability after stroke. OBJECTIVE: This was a randomized intervention trial to assess the influence of an aquatic exercise program on people suffering from depression and anxiety after ischemic stroke. METHODS: Participants were randomized to an experimental group (EG) composed of 19 individuals (51.8 ± 8.5 years; ten males and nine females), and a control group (CG) composed of 17 people (52...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488824/effects-of-verbal-encouragement-on-force-and-electromyographic-activations-during-handgrip-exercise
#14
Chama Belkhiria, Giovanni DE Marco, Tarak Driss
BACKGROUND: The aim of the present study was to examine the effects of verbal encouragement on isometric force and associated electromyographic (EMG) parameters during a handgrip task. METHODS: Twenty-three participants (12 women and 11 men) performed maximal voluntary isometric handgrip contractions following three conditions: 1) verbal encouragement (VE) condition: participants executed isometric contractions while being verbally encouraged. 2) non verbal encouragement (nVE) condition: the same starting and stopping signal but without encouragement...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488823/intra-system-reliability-of-sics-video-tracking-system-digital-stadium%C3%A2-for-performance-analysis-in-football
#15
Marco Beato, Mikael Jamil
BACKGROUND: The correct evaluation of external load parameters is a key factor in professional football. The instrumentations usually utilised to quantify the external load parameters during official matches are Video-Tracking Systems (VTS). VTS is a technology that records two- dimensional position data (x and y) at high sampling rates (over 25 Hz). The aim of this study was to evaluate the intra-system reliability of Digital.Stadium® VTS. METHODS: 28 professional male football players taking part in the Italian Serie A (age 24 ± 6 years, body mass 79...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480694/long-term-high-intensity-sport-practice-modulates-adaptative-changes-in-athletes-heart-and-in-the-autonomic-nervous-system-profile
#16
Witold Slomko, Joanna Slomko, Tomasz Kowalik, Jacek J Klawe, Malgorzata Tafil-Klawe, Agnieszka Cudnoch-Jedrzejewska, Julia L Newton, Pawel Zalewski
BACKGROUND: The purpose of this study was to compare cardiovascular and autonomic adaptation changes in athletes exposed to high intensity and uninterrupted training for extended periods of time. METHODS: We assessed hemodynamic profile and cardiac function in 22 international master-level athletes, free of cardiovascular disease who experienced particularly intensive and uninterrupted training over a 8- to 21-year-period. RESULTS: One-way ANOVA revealed that in athletes, extreme and uninterrupted strength and endurance training over long periods of time (up to 21 years) causes an increase in resting heart rate (50...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480693/factors-determining-800-m-running-performance-in-young-male-athletes
#17
Ramon Cruz, Romulo C de Moraes Bertuzzi, Danilo L Alves, Rafael Azevedo, Phelipe H Cardoso Castro, Jefferson Verbena Freitas, Adriano E Lima-Silva, Fernando R de Oliveira, Jorge R Perrout Lima
BACKGROUND: The aim of the present study was to identify determinant variables on 800-m running performance in young male athletes derived from field tests and biological maturity. METHODS: A total of 89 athletes, aged between 13 and 15 years old, performed a 800-m running trial and a battery of tests which involved anthropometric measurements, a running anaerobic test (RAST), a flexibility test (sit-and-reach), a counter movement jump test and progressive test for aerobic fitness evaluation...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480692/effects-of-lymphatic-drainage-and-cryotherapy-on-indirect-markers-of-muscle-damage
#18
Michael Behringer, Diana Jedlicka, Joachim Mester
BACKGROUND: Muscle enzymes are cleared from the extracellular space by the lymphatic system, while smaller proteins enter the bloodstream directly. We investigated if manual lymphatic drainage (MLD), local cryotherapy (CRY), and rest (RST) differently affect the time course of creatine kinase (CK, 84 kDa) and heart-type fatty acid binding protein (h-FABP, 15 kDa) in the blood. DESIGN: Randomized controlled trial. METHODS: After 4x20 unilateral, eccentric accentuated knee extensions (with one-third of the maximal isometric force) 30 sports students randomly received either a 30 min MLD, CRY or they rested (RST) for the same amount of time...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480691/profile-of-match-performance-and-heart-rate-response-in-japanese-amputee-soccer
#19
Hirofumi Maehana, Aya Miyamoto, Kenichi Koshiyama, Toshio Tanaka Yanagiya, Masafumi Yoshimura
BACKGROUND: The purpose of this study was to profile the match performance and heart rate response in Japanese amputee soccer. METHODS: Twelve amputee soccer players participated in this study. Match data were collected 20 samples in 4 matches. Match performances data such as total distance, high-intensity running (HIR: ≥13km·h-1) were collected using a global positioning systems technology. Heart rate (HR) was recorded using short-range radio telemetry. In addition, the rating of perceived exertion (RPE) was assessed immediately using Borg's original after the first half and the second half...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480690/cognitive-and-personality-factors-in-the-regular-practice-of-martial-arts
#20
Rosa A Fabio, Giulia E Towey
BACKGROUND: The effects of regular practice of martial arts is considered controversial and studies in this field limited their attention to singular psychological benefits. The aim of this study is to examine the relationship between the regular practice of martial arts and cognitive and personality factors, such as: attention, creativity and school performance, together with, self-esteem, self-efficacy and aggression. METHODS: The design consists in a factorial design with two independent variables (groups and age levels) and seven dependent variables (attention, creativity, intelligence, school performance, self-esteem, self-efficacy and aggression)...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
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