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https://www.readbyqxmd.com/read/28630583/acute-modification-of-cardiac-autonomic-function-of-high-intensity-interval-training-in-collegiate-male-soccer-players-with-different-chronotype-a-cross-over-study
#1
Matteo Bonato, Luca Agnello, Letizia Galasso, Angela Montaruli, Eliana Roveda, Giampiero Merati, Antonio La Torre, Jacopo A Vitale
The purpose of this study was to evaluate if the time of the day (8.00 a.m. vs 8.00 p.m.) and chronotype could influence autonomic cardiac control in soccer players in relation to an acute session of high-intensity interval training. The morningness-eveningness questionnaire was administered to recruit Morning-type and Evening-type collegiate male soccer players. Therefore, 24 players (12 Morning-types and 12 Evening-types) were randomly assigned, to either morning (n = 12; age 23 ± 3 years; height 1.75 ± 0...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28613960/the-effect-of-air-pollution-on-diurnal-variation-of-performance-in-anaerobic-tests-cardiovascular-and-hematological-parameters-and-blood-gases-on-soccer-players-following-the-yo-yo-intermittent-recovery-test-level-1
#2
Nesrin Boussetta, Salma Abedelmalek, Khouloud Aloui, Nizar Souissi
This study aimed to investigate the effect of air pollution on diurnal variation of performance in anaerobic tests, cardiovascular and hematological parameters, and blood gases on soccer players following the Yo-Yo Intermittent Recovery Test Level-1 (YYIRT1). In a randomized order, 11 healthy soccer players (mean age: 21.8 [range: 20-24] years; height: 178.00 [range: 1.64-1.83] cm; body mass index [BMI]: 23.57 [range: 20.45-28.03] kg.m(-2)) performed a YYIRT1 at two different times of day (TOD) (08:00 h and 18:00 h) in two areas (i...
June 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28603510/how-do-soccer-players-adjust-their-activity-in-team-coordination-an-enactive-phenomenological-analysis
#3
Vincent Gesbert, Annick Durny, Denis Hauw
This study examined how individual team members adjust their activity to the needs for collective behavior. To do so, we used an enactive phenomenological approach and explored how soccer players' lived experiences were linked to the active regulation of team coordination during eight offensive transition situations. These situations were defined by the shift from defensive to offensive play following a change in ball possession. We collected phenomenological data, which were processed in four steps. First, we reconstructed the diachronic and synchronic dynamics of the players' lived experiences across these situations in order to identify the units of their activity...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28597616/comparison-of-the-movement-patterns-between-small-and-large-side-games-training-and-competition-in-professional-soccer-players
#4
Jesús V Giménez, Juan Del-Coso, Anthony S Leicht, Miguel A Gomez
BACKGROUND: The purpose of this investigation was to compare the movement patterns of professional soccer players during a small-sided game (SSG), a large-sided game (LSG) and a competitive friendly match (FM). METHODS: Fourteen professional players participated in three training routines with a similar relative pitch area per player. The SSG and LSG consisted of 8 repetitions of 4-min game play, interspersed by 2-min of active recovery, and their data were compared to the first 32 minutes of a FM...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28566810/soccer-small-sided-games-in-young-players-rule-modification-to-induce-higher-physiological-responses
#5
J Halouani, H Chtourou, A Dellal, A Chaouachi, K Chamari
The aim of this study was to identify the physiological responses of 3 forms of players' numbers during two different games rules of small-sided games (SSG: stop-ball vs. small-goals rules). Eighteen youth amateur soccer players (age 13.5±0.7 years; height 168.9±6.1cm; body mass 63.1±7.7 kg) participated in this study and performed 3 SSGs with varying players' number (2vs.2; 3vs.3 and 4vs.4): stop-ball SSG (SB-SSG) vs. small-goals SSG (SG-SSG) in a randomized and counter-balanced order on a constant pitch dimension (20×25m)...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28566809/the-effects-of-game-types-on-intensity-of-small-sided-games-among-pre-adolescent-youth-football-players
#6
J Halouani, H Chtourou, A Dellal, A Chaouachi, K Chamari
The aim of this study was to examine the effects of variations in pitch dimensions on pre-adolescent youth soccer players' physiological responses during two different types of small-sided games (SSG). Sixteen young soccer players (age: 13.2 ± 0.6 years; body mass: 52.5 ± 7 kg; height: 163.4 ± 6 cm) participated in this study. They performed 4 vs. 4 stop-ball SSG (SB-SSG) vs. small-goals SSG (SG-SSG) with 4×4 min and 2 min of passive recovery in between, using 3 different pitch sizes (small: 10×15, medium: 15×20, and large: 20×25 m)...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28566807/specific-physical-trainability-in-elite-young-soccer-players-efficiency-over-6-weeks-in-season-training
#7
M Chtara, M Rouissi, M Haddad, H Chtara, A Chaalali, A Owen, K Chamari
The aim of the present study was to compare the effects of 3 training protocols (plyometric [PLYO], agility [AG], or repeated shuttle sprints [RS]) on physical performance in the same population of young soccer players. Forty-two youth-level male players (13.6±0.3-years; 1.65±0.07 m; 54.1±6.5 kg; body fat: 12.8±2.6%) participated in a short-term (6-week) randomized parallel fully controlled training study (pre-to-post measurements): PLYO group, n=10; AG group, n=10; RS group, n=12; and control group [CON] n=10...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28559757/validation-of-the-optogait-system-for-monitoring-treatment-and-recovery-of-post-concussion-athletes
#8
Melissa A Engelson, Richard Bruns, Christopher J Nightingale, Kevin M Bardwell, Craig A Mason, Shihfen Tu, Laney Nelson, Stephen A Butterfield
OBJECTIVE: This study sought to investigate correlations between OptoGait motion analysis technology and 2 commonly used concussion assessment instruments, the Balance Evaluation Scoring System (BESS) and the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) computerized neurocognitive assessment software, to see if OptoGait might be a valid concussion assessment tool. METHODS: Twenty Division-1 college women varsity soccer players completed trials of 8 different conditions of the OptoGait test battery...
June 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/28503527/postactivation-potentiation-in-elite-young-soccer-players
#9
Adriano Titton, Emerson Franchini
The aim of this study was to investigate the acute effects of 16 different combinations to cause the postactivation potentiation (PAP) in elite young soccer players. Squat exercise in 4 different intensities (40%, 60%, 80%, and 100% one-repetition maximum [1RM]) was performed and its effects were evaluated in the performance of countermovement jump (CMJ), after 4 different recovery times (1, 3, 5, and 10 min). For this purpose, 25 young soccer players, underwent five experimental sessions. At the first session the control to determine 1RM in half-squat was carried out...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28488826/soccer-training-high-intensity-interval-training-is-mood-disturbing-while-small-sided-games-ensure-mood-balance
#10
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/28469754/effects-of-the-off-season-period-on-field-and-assistant-soccer-referees-physical-performance
#11
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/28338445/socioeconomic-status-and-outcomes-after-sport-related-concussion-a-preliminary-investigation
#12
Scott L Zuckerman, Brian Holt Zalneraitis, Douglas J Totten, Kolin E Rubel, Andrew W Kuhn, Aaron M Yengo-Kahn, Christopher M Bonfield, Allen K Sills, Gary S Solomon
OBJECTIVE A significant proportion of patients experience long-term symptoms after sport-related concussion (SRC), and several factors have been associated with this protracted recovery. Limited data exist on the role of socioeconomic status (SES) on SRC outcomes. The objective in this study was to conduct a preliminary investigation to determine the effect of SES on outcomes after SRC in student-athletes treated at a regional sports concussion center. METHODS A retrospective cohort study of 282 middle school, high school, and collegiate student-athletes was conducted...
June 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28285432/a-low-dose-6-week-bovine-colostrum-supplementation-maintains-performance-and-attenuates-inflammatory-indices-following-a-loughborough-intermittent-shuttle-test-in-soccer-players
#13
Yiannis Kotsis, Anastasia Mikellidi, Cleopatra Aresti, Eleni Persia, Aristomenis Sotiropoulos, Demosthenes B Panagiotakos, Smaragdi Antonopoulou, Tzortzis Nomikos
PURPOSE: The aim of the study was to investigate the effect of a 6-week, low-dose bovine colostrum (BC) supplementation on exercise-induced muscle damage (EIMD) and performance decline in soccer players following the Loughborough Intermittent Shuttle Test (LIST) during a competitive season period. METHODS: In a double-blind, randomized, placebo-controlled design, two groups of soccer players were allocated to a 3.2 g/day of whey protein (WP, N = 8) or BC (N = 10) and performed a pre- and a post-supplementation LIST...
March 11, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28277432/physiological-factors-associated-with-declining-repeated-sprint-performance-in-hypoxia
#14
Hannes Gatterer, Verena Menz, Christian Untersteiner, Kultida Klarod, Martin Burtscher
Performance loss in hypoxia might not only be caused by reduced oxygen availability, but might also be influenced by other factors, as for example oxidative stress, perceived exertion or breathing patterns. This study aimed to investigate the influence of these factors on running performance during hypoxic and normoxic shuttle-run sprinting. Eight male amateur soccer players performed shuttle-run sprints in hypoxia (FiO2∼14.8%) and normoxia (random order). Each session comprised 3-sets of 5x10s back and forth sprints (4...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28229567/repeated-sprint-training-in-the-fasted-state-during-ramadan-morning-or-evening-training
#15
Asma Aloui, Tarak Driss, Hana Baklouti, Hamdi Jaafar, Omar Hammouda, Karim Chamari, Nizar Souissi
BACKGROUND: The present study assessed the optimal moment-of-day for repeated-sprint training in the fasted state during Ramadan. METHODS: Thirty amateur soccer players were randomly assigned to a morning training group (MTG, training at ~08:00 a.m., n = 10), an evening training group (ETG, training at ~06:00 p.m., n = 10), and a control group (n = 10). Training sessions, conducted on alternate days, consisted of 3 sets of 6 × 40-m shuttle sprints (2 × 20 m with 180° direction changes)...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28222573/soccer-related-performance-in-eumenorrheic-tunisian-high-level-soccer-players-effects-of-menstrual-cycle-phase-and-moment-of-day
#16
Mohamed Tounsi, Hamdi Jaafar, Asma Aloui, Nizar Souissi
BACKGROUND: This study aimed to examine the combined effects of menstrual cycle phase and moment of day on female soccer players' performances in the five-jump test (5JT), the repeated shuttle- sprint ability test (RSSA), and the Yo-Yo intermittent recovery test level 1 (YYIRT1). METHODS: Eleven eumenorrheic Tunisian high-level soccer players volunteered to participate. Each subject individually participated in three testing periods: one in the early follicular phase (menses), one in the late follicular phase, and another in the luteal phase...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28220500/neuroplus-biofeedback-improves-attention-resilience-and-injury-prevention-in-elite-soccer-players
#17
Aiace Rusciano, Giuliano Corradini, Ivilin Stoianov
Performance and injury prevention in elite soccer players are typically investigated from physical-tactical, biomechanical, and metabolic perspectives. However, executive functions, visuospatial abilities, and psychophysiological adaptability or resilience are also fundamental for efficiency and well-being in sports. Based on previous research associating autonomic flexibility with prefrontal cortical control, we designed a novel integrated autonomic biofeedback training method called Neuroplus to improve resilience, visual attention, and injury prevention...
February 21, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28203599/surgical-management-of-rectus-femoris-avulsion-among-professional-soccer-players
#18
Bertrand Sonnery-Cottet, Nuno Camelo Barbosa, Sanesh Tuteja, Roland Gardon, Matt Daggett, Damien Monnot, Charles Kajetanek, Mathieu Thaunat
BACKGROUND: Rectus femoris injuries are common among athletes, especially in kicking sports such as soccer; however, proximal rectus femoris avulsions in athletes are a relatively rare entity. PURPOSE/HYPOTHESIS: The purpose of this study was to describe and report the results of an original technique of surgical excision of the proximal tendon remnant followed by a muscular suture repair. Our hypothesis was that this technique limits the risk of recurrence in high-level athletes and allows for rapid recovery without loss of quadriceps strength...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28199402/short-or-long-rest-intervals-during-repeated-sprint-training-in-soccer
#19
F Marcello Iaia, Matteo Fiorenza, Luca Larghi, Giampietro Alberti, Grégoire P Millet, Olivier Girard
The present study compared the effects of two repeated-sprint training (RST) programs, differing in duration of the between-sprint rest intervals, on various soccer-related exercise performances. For 5 weeks during the competitive season, twenty-nine young trained male soccer players either replaced two of their habitual fitness conditioning sessions with RST characterized by short (5-15; n = 9) or long (5-30; n = 10) rest intervals, or served as control (n = 10). The 5-15 and 5-30 protocols consisted of 6 repetitions of 30-m (~5 s) straight-line sprints interspersed with 15 s or 30 s of passive recovery, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28198600/relationship-between-field-tests-and-match-running-performance-in-high-level-young-brazilian-soccer-players
#20
Rodrigo Aquino, Luiz H Palucci Vieira, Lucas de Paula Oliveira, Luiz G Cruz Goncalves, Paulo R Pereira Santiago
BACKGROUND: The main aim of this study was to analyse the relationship between field tests and match running performance using computational tracking technology in high-level young Brazilian soccer players. METHODS: Twenty-five young male Brazilian soccer players participated in this study (U-15, n = 13; U-17, n = 12). In the same week the players were submitted to field tests and actual matches. The field tests were: Maximum Speed (10m-30m), Zig-Zag, Running-based Anaerobic Sprint Test, and Yo-Yo Intermittent Recovery Test level 1...
February 14, 2017: Journal of Sports Medicine and Physical Fitness
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