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https://www.readbyqxmd.com/read/27919919/subjective-well-being-and-training-load-predict-in-season-injury-and-illness-risk-in-female-youth-soccer-players
#1
Andrew Watson, Stacey Brickson, Alison Brooks, Warren Dunn
BACKGROUND: The purpose of this study was to evaluate the effects of training load (TL) and well-being on injury and illness risk in youth soccer players. METHODS: Throughout a 20-week season, 75 female adolescent soccer players reported mood, fatigue, stress, soreness, sleep quality, sleep hours, TL, injuries and illnesses. Well-being measures were recorded from -3 (worst) to +3 (best). TL was expressed as daily, weekly and monthly, as well as an acute:chronic workload ratio (weekly divided by monthly)...
December 5, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27918668/the-influence-of-changes-in-acute-training-load-on-daily-sensitivity-of-morning-measured-fatigue-variables-in-elite-soccer-players
#2
Robin T Thorpe, Anthony J Strudwick, Martin Buchheit, Greg Atkinson, Barry Drust, Warren Gregson
PURPOSE: To determine the sensitivity of a range of potential fatigue measures to daily training load accumulated over the previous two, three and four days during a short in-season competitive period in elite senior soccer players (n=10). METHODS: Total high-speed running distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), counter-movement jump height (CMJ), submaximal heart rate (HRex), post-exercise heart rate recovery (HRR) and heart rate variability (HRV: Ln rMSSD) were analysed during an in-season competitive period (17 days)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27893475/leg-stiffness-in-female-soccer-players-inter-session-reliability-and-the-fatiguing-effects-of-soccer-specific-exercise
#3
Mark De Ste Croix, Jonathan Hughes, Rhodri S Lloyd, Jon L Oliver, Paul Read
Low levels of leg stiffness and reduced leg stiffness when fatigue is present compromise physical performance and increase injury risk. The purpose of this study was to (a) determine the reliability of leg stiffness measures obtained from contact mat data and (b) explore age-related differences in leg stiffness following exposure to a soccer-specific fatigue protocol in young female soccer players. 37 uninjured female youth soccer players divided into 3 sub-groups based on chronological age (U13, U15 and U17 year olds) volunteered to participate in the study...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27818974/index-of-fatigue-quadriceps-in-soccer-athletes-after-anterior-cruciate-ligament-reconstruction
#4
Maria Luzete Costa Cavalcante, Paulo Renan Lima Teixeira, Tamara Cristina Silva Sousa, Pedro Olavo de Paula Lima, Rodrigo Ribeiro Oliveira
OBJECTIVE: The present study aimed to evaluate the muscle fatigue of the quadriceps muscle in high-performance soccer players undergoing (anterior cruciate ligament) ACL reconstruction. METHODS: We evaluated 17 high-performance soccer players from three professional soccer teams of a state in Brazil from August 2011 to July 2012. All subjects were evaluated between 5.5 and 7 months after ACL reconstruction with a Biodex® isokinetic dynamometer (System 4 Pro) with test protocol CON/CON at 60°/s and 300°/s with 5 and 15 repetitions, respectively...
September 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/27751660/measuring-recovery-an-adapted-brief-assessment-of-mood-bam-compared-to-biochemical-and-power-output-alterations
#5
David A Shearer, William Sparkes, Jonny Northeast, Daniel J Cunningham, Christian J Cook, Liam P Kilduff
OBJECTIVES: Biochemical (e.g. creatine kinase (CK)) and neuromuscular (e.g. peak power output (PPO)) markers of recovery are expensive and require specialist equipment. Perceptual measures are an effective alternative, yet most validated scales are too long for daily use. DESIGN: This study utilises a longitudinal multi-level design to test an adapted Brief Assessment of Mood (BAM+), with four extra items and a 100mm visual analogue scale to measure recovery. METHODS: Elite under-21 academy soccer players (N=11) were monitored across five games with data (BAM+, CK and PPO) collected for each game at 24h pre, 24h and 48h post-match...
October 5, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27736246/the-effect-of-green-tea-and-sour-tea-hibiscus-sabdariffa-l-supplementation-on-oxidative-stress-and-muscle-damage-in-athletes
#6
Amir Hadi, Makan Pourmasoumi, Marzieh Kafeshani, Jahangir Karimian, Mohammad Reza Maracy, Mohammad Hasan Entezari
OBJECTIVE: Additional oxygen consumption during intense exercises may lead to oxidative stress and contribute to muscular fatigue. Green tea and sour tea (Hibiscus sabdariffa L.), which contain various flavonoids and polyphenols, have many healthful properties such as anticarcinogenic, anti-inflammatory, and heart protecting effects. The aim of the present study was to assess the effects of green tea and sour tea supplementation on oxidative stress and muscle damage in soccer athletes...
October 13, 2016: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/27735221/effects-of-muscle-fatigue-induced-by-cmj-on-efficacy-parameters-of-instep-ball-kicking-in-soccer
#7
Víctor Torreblanca-Martínez, Fernando M Otero-Saborido, José A González-Jurado
The purpose was to study the effects of muscle fatigue induced by countermovement jumps (CMJ) on instep kick foot velocity in young male soccer players. Fifteen under-18 soccer players of a professional club, performed maximal velocity instep kicks before and after a fatigue protocol that consisted of continuous CMJ (countermovement jump). Foot velocity at impact without fatigue, foot velocity at impact with fatigue, CMJ height without fatigue, maximum jump height in fatigue test, and CMJ height change in fatigue test on a dynamometric platform, were measured...
October 13, 2016: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/27712094/relationship-between-daily-training-load-and-psychometric-status-of-professional-soccer-players
#8
Wassim Moalla, Mohamed Saifeddin Fessi, Fayçal Farhat, Sabeur Nouira, Del P Wong, Grégory Dupont
We studied the relationship between daily training load (TL) experienced by professional soccer players and the Hooper questionnaire reflecting their perceived quality of sleep, fatigue, stress and delayed onset muscle soreness. During a 16-week training period, the rating of perceived exertion and duration were collected after each training session, and daily TL was calculated from 14 professional soccer players. The Hooper questionnaire was completed every day before the first training session and the Hooper's score (HS) was then calculated...
October 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27618386/effects-of-velocity-loss-during-resistance-training-on-performance-in-professional-soccer-players
#9
Fernando Pareja-Blanco, Luis Sánchez-Medina, Luis Suárez-Arrones, Juan José González-Badillo
AIM: To analyze the effects of two resistance training (RT) programs that used the same relative loading but different repetition volume, using the velocity loss during the set as the independent variable: 15% (VL15) vs. 30% (VL30). METHODS: Sixteen professional soccer players with RT experience (age 23.8 ± 3.5 years, body mass 75.5 ± 8.6 kg) were randomly assigned to two groups: VL15 (n = 8) or VL30 (n = 8) that followed a 6-week (18 sessions) velocity-based squat training program...
September 6, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27614926/the-biomechanical-and-physiological-response-to-repeated-soccer-specific-simulations-interspersed-by-48-or-72%C3%A2-hours-recovery
#10
Richard Michael Page, Kelly Marrin, Chris Michael Brogden, Matt Greig
PURPOSE: To assess the residual fatigue response associated with the completion of two successive soccer-specific exercise protocols (SSEP). METHODS: Twenty male soccer players were pair-matched before completing SSEPs, interspersed by either 48 or 72 h. Outcome variables were measured every 15 min, and comprised uni-axial measures of PlayerLoad, mean (HR) and peak heart rate (HRpeak), blood lactate concentration, mean and peak (V˙O2peak) oxygen consumption, and rating of perceived exertion (RPE)...
July 4, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27584466/neuromuscular-fatigue-in-response-to-120-minutes-of-soccer-specific-exercise-2431-board-3-june-3-9-30-am-11-30-am
#11
Stuart Goodall, Kevin Thomas, Robert Hunter, Paul Parker, Gareth Woolley, Liam Harper, Emma Stevenson, Daniel West, Mark Russell, Glyn Howatson
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27579802/dynamic-balance-is-impaired-after-a-match-in-young-elite-soccer-players
#12
Massimiliano Pau, Federico Mereu, Marco Melis, Bruno Leban, Federica Corona, Gianfranco Ibba
PURPOSE: The aim of this study is to assess the effect of actual match effort on dynamic balance abilities in young elite soccer players. METHODS: Seventeen Under 15 male players who compete at national level participated in the study. Their dynamic balance was assessed by having them jump starting with both feet on the ground in a standing position and land on one foot only. Their vertical time to stabilization (vTTS) and postural sway were calculated before and after 35 min of an unofficial match...
May 21, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27575834/pre-exercise-infrared-low-level-laser-therapy-810%C3%A2-nm-in-skeletal-muscle-performance-and-postexercise-recovery-in-humans-what-is-the-optimal-dose-a-randomized-double-blind-placebo-controlled-clinical-trial
#13
Adriane Aver Vanin, Thiago De Marchi, Shaiane Silva Tomazoni, Olga Tairova, Heliodora Leão Casalechi, Paulo de Tarso Camillo de Carvalho, Jan Magnus Bjordal, Ernesto Cesar Leal-Junior
AIM: This study aimed to evaluate the medium-term effects of low-level laser therapy (LLLT or photobiomodulation) in postexercise skeletal muscle recovery and performance enhancement and to identify the optimal dose of 810 nm LLLT. MATERIALS AND METHODS: A randomized, double-blind, placebo-controlled trial was performed, with voluntary participation of 28 high-level soccer athletes. We analyzed maximum voluntary contraction (MVC), delayed onset muscle soreness (DOMS), creatine kinase (CK) activity, and interleukin-6 (IL-6) expression...
October 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27574867/changes-of-the-psychophysical-state-and-feeling-of-wellness-of-professional-soccer-players-during-pre-season-and-in-season-periods
#14
Mohamed Saifeddin Fessi, Sabeur Nouira, Alexandre Dellal, Adam Owen, Mohamed Elloumi, Wassim Moalla
Perceived changes due to training monotony, strain, sleep, stress, fatigue, muscle soreness and the influence of specific training sessions on the affective valence were explored in professional soccer players. Seventeen players completed the Hooper questionnaire, the ratings of perceived exertion and feeling scale (FS) every training/match day before and during the soccer season. Higher players' training loads were recorded during pre-season when compared with in-season period (2558.1 ± 262.4 vs. 1642.8 ± 169...
August 30, 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27537203/the-effect-of-slope-on-repeated-sprint-ability-in-young-soccer-players
#15
J Padulo, L P Ardigò, G Attene, C Cava, D P Wong, K Chamari, G M Migliaccio
This study aimed to describe a gradient repeated sprint ability (RSA) test in comparison with a standard level one by investigating performance, metabolic demand and muscular jumping performance as a proxy for running mechanics. Eighteen athletes performed two level RSA tests (40 m × 6) - for reliability evaluation - and one ±5% gradient RSA test, second leg downhill (RSAgrad). Rating of perceived exertion (RPE), blood lactate concentration (BLa) concentration, vertical jump heights were assessed as well...
August 18, 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27448143/effects-of-recovery-mode-on-physiological-and-psychological-responses-and-performance-of-specific-skills-in-young-soccer-players
#16
Adnene Gharbi, Liwa Masmoudi, Hamdi Chtourou, Nesrine Chaari, Zouhair Tabka
BACKGROUND: The ability to perform repeated sprints is likely influenced by the mode of the recovery. Despite performance time, peak power, and mean power measured in most of studies, there are other specific sport abilities that should be examined after different recovery strategies.The aim of this study was to examine the effects of recovery modes (active [AR] vs passive [PR]) on physiological performance (lactate, HR, and blood pressure), psychological performance (perceived exertion rating [RPE] and feeling scale [FS]), and specific skills (kicking accuracy [KA] and repeated dribbling) in young soccer players...
July 22, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27428681/can-a-repeated-sprint-ability-test-help-clear-a-previously-injured-soccer-player-for-fully-functional-return-to-activity-a-pilot-study
#17
Johnny Padulo, Giuseppe Attene, Luca P Ardigò, Nicola L Bragazzi, Nicola Maffulli, Alessandro M Zagatto, Antonio Dello Iacono
OBJECTIVE: To investigate the effects of fatigue induced by a repeated sprint ability (RSA) test on the neuromuscular responses of soccer players with a recent history of lower limb injuries (CH) and a matched control group in good fitness condition (GH). DESIGN: This was a case-control study. PARTICIPANTS: Nine CH and 9 GH. INDEPENDENT VARIABLE: Allocation to CH or GH. MAIN OUTCOME MEASURES: Each player was assessed for blood lactate concentration and jumping performance [squat jump (SJ) and countermovement jump (CMJ)] before/after RSA...
July 15, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/27420320/longitudinal-study-evaluating-postural-balance-of-young-athletes
#18
Nili Steinberg, Dan Nemet, Michal Pantanowitz, Aviva Zeev, Monder Hallumi, Mahmood Sindiani, Yoav Meckel, Alon Eliakim
Repeated anaerobic conditions during athletic performance may cause general and local fatigue that result in postural balance deficit. Evidence suggests that improved postural balance during athletic training may decrease the risk for fallings and traumatic injuries among athletes. Twenty athletes (12 girls, 8 boys) and 20 controls (12 girls, 8 boys) ages 10-15 years participated in the current study. All athletes were active in an 8-month physical activity program, 3 times per week for 90 min., specific to basketball, soccer, or athletic training...
February 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27388781/effect-of-a-congested-match-schedule-on-immune-endocrine-responses-technical-performance-and-session-rpe-in-elite-youth-soccer-players
#19
Alexandre Moreira, Paul Bradley, Christopher Carling, Ademir Felipe Schultz Arruda, Leandro M P Spigolon, Clovis Franciscon, Marcelo Saldanha Aoki
This study investigated the effects of a congested match schedule (7 matches played in 7 days) on steroid hormone concentrations, mucosal immunity, session rating of perceived exertion (S-RPE) and technical performance in 16 elite youth soccer players (14.8 ± 0.4 years; 170.6 ± 9.4 cm; 64.9 ± 7 kg). No change was observed for salivary cortisol concentration across match time points (P = 0.33; effect size [ES] = 0.13-0.48). In contrast, there was a decrease in salivary testosterone and salivary IgA (SIgA) concentrations from the 1st compared with the last time point (P = 0...
July 8, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27384693/practitioners-perceptions-of-the-soccer-extra-time-period-implications-for-future-research
#20
Liam D Harper, Melissa Fothergill, Daniel J West, Emma Stevenson, Mark Russell
Qualitative research investigating soccer practitioners' perceptions can allow researchers to create practical research investigations. The extra-time period of soccer is understudied compared to other areas of soccer research. Using an open-ended online survey containing eleven main and nine sub questions, we gathered the perceptions of extra-time from 46 soccer practitioners, all working for different professional soccer clubs. Questions related to current practices, views on extra-time regulations, and ideas for future research...
2016: PloS One
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