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Research in Sports Medicine

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 7, 2016: Research in Sports Medicine
Lavinia Falese, Pietro Della Valle, Bruno Federico
Epidemiological studies on football (soccer) injuries are needed to assess both the magnitude of the problem and the effectiveness of preventive programmes. However, few data are available for Italy, which hosts one of the main football leagues in Europe. In this study, we aimed to describe the epidemiology of football injuries in the 2012/2013 and 2013/2014 seasons of the Italian Serie A. Information about injury location, type, date of occurrence and duration of absence was obtained from
September 29, 2016: Research in Sports Medicine
Jaclyn B Caccese, Lindsey C Lamond, Thomas A Buckley, Thomas W Kaminski
The purpose of this study was to measure peak linear and rotational head acceleration in women's collegiate soccer and explore the variations in acceleration across different strategic scenarios. Game videos from 14 games were used to identify the strategic scenario in which the athlete headed the ball. Strategic scenarios included: bounce, secondary header, punt, throw-in, goal kick, corner kick, and kick. Peak linear and rotational accelerations were measured using the Smart Impact Monitor (Triax Technologies Inc...
September 6, 2016: Research in Sports Medicine
Athos Trecroci, Zoran Milanović, Alessio Rossi, Marco Broggi, Damiano Formenti, Giampietro Alberti
The purpose of this study was to examine the effects of speed, agility and quickness (SAQ) training on acceleration (5 and 20 m), change of direction speed (CODS) and reactive agility in preadolescent soccer players. Thirty-five participants (age = 10.57 ± 0.26, body mass = 36.78 ± 5.34 kg, body height = 1.42 ± 0.05 m), randomly assigned to experimental (EG, n = 20) and control groups (CG, n = 15), completed a 12-week training intervention, 2 day/week. A significant interaction was found in 5-m sprint (P < 0...
September 3, 2016: Research in Sports Medicine
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
P T Nikolaidis, M A G Ruano, N C de Oliveira, L A Portes, J Freiwald, P M Leprêtre, B Knechtle
The aim of the present study was to examine the relationship of 20 m sprint performance with anthropometrical and physiological parameters in male soccer players. A hundred and 81 soccer players from the region of Athens (age 23.4 ± 5.0 yrs, body mass 73.4 ± 7.7 kg, height 180.0 ± 5.9 cm, body fat (BF) 14.4 ± 3.6%), classified into quartiles according to 20 m sprint time (group A, 2.84-3.03 s; group B, 3.04-3.09 s; group C, 3.10-3.18 s; group D, 3.19-3.61 s), participated. Soccer players in group A were younger and had better performance in vertical jumps and in the Wingate anaerobic test (WAnT, p < 0...
August 22, 2016: Research in Sports Medicine
Giuseppe Coratella, Marco Beato, Federico Schena
The aim of the present study was to evaluate whether or not recreational soccer players (SP) and non-soccer players (non-SP) with similar intermittent-running ability had similar physiological responses to a soccer match-simulation protocol. Twenty-two recreational SP and 19 fitness-matched non-SP participated. Yo-Yo level 1 assessed intermittent-running ability, while the Loughborough Intermittent Shuttle Test served as soccer match-simulation protocol. Heart rate (HR), blood lactate concentration [La(-)] and rating of perceived exertion (RPE) were recorded after each bout (1-5, plus an exhaustive task)...
August 22, 2016: Research in Sports Medicine
Javier Yanci, Asier Los Arcos, Jesús Camara, Daniel Castillo, Alberto García, Carlo Castagna
The aim of this study was to examine the dose response effect of strength and conditioning programmes, involving horizontally oriented plyometric exercises, on relevant soccer performance variables. Sixteen soccer players were randomly allocated to two 6-week plyometric training groups (G1 and G2) differing by imposed (twice a week) training volume. Post-training G1 (4.13%; d = 0.43) and G2 (2.45%; d = 0.53) moderately improved their horizontal countermovement jump performance. Significant between-group differences (p < 0...
August 22, 2016: Research in Sports Medicine
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
Thore-Björn Haag, H Michael Mayer, Alexandra S Schneider, Michael C Rumpf, Martin Handel, Christian Schneider
The purpose of this study is to identify several responsible parameters for back pain (BP) in youth soccer players to create a risk assessment tool for early prevention. An iPad-based survey was used to screen for parameters in a cross-sectional study. This questionnaire includes items regarding anthropometric data, training habits and sports injuries and was put into practice with 1110 athletes. Sex (odds ratio (OR): 1.84), age group (1.48) and playing surface (1.56) were significantly associated with BP. A history of injuries especially to the spine and hip/groin increased the likelihood for evolving recurrent BP (1...
August 18, 2016: Research in Sports Medicine
Filipe Manuel Clemente, António José Figueiredo, Fernando Manuel Lourenço Martins, Rui Sousa Mendes, Del P Wong
The aim of this study was to analyse the association between physical/technical variables and the tactical prominence variables in U14 soccer matches. Twenty-two young amateur soccer players (13.5 [Formula: see text] 0.5 years old, 5.4 [Formula: see text] 0.5 years of practice, 163.3 [Formula: see text] 9.8 cm in body height) from two teams of the Portuguese regional league volunteered for the study. Our results showed positive and moderate correlation between dribbling test and betweenness centrality (r = 0...
August 17, 2016: Research in Sports Medicine
Andrew J Galpin, Andrew C Fry, Justin X Nicoll, Christopher A Moore, Brian K Schilling, Donald B Thomason
Extracellular signal-regulated protein kinase 1/2 (ERK1/2) moderates skeletal muscle growth; however, chronic responses of this protein to unique resistance exercise (RE) paradigms are yet to be explored. The purpose of this investigation was to describe the long-term response of ERK1/2 following circuit weight training (CWT), recreationally weight training (WT), powerlifting (PL) and weightlifting (WL). Independent t-tests were used to determine differences in trained groups compared to sedentary controls...
July 2016: Research in Sports Medicine
Michael Behringer, Johannes Caspar Konrad Montag, Yvonne Kilian, Phil Heaton, Joachim Mester
We investigated alternatives to commonly used biomarkers of exercise-induced tissue damage. Over 5 days following two bouts of 100 drop-to-vertical jumps (inter-bout rest period of 3 weeks), myosin heavy chain 1, hydroxylysine (HYL), hydroxyproline (HYP), spermine (SPM) and spermine synthase (SMS) were measured in the serum of 10 participants. HYL significantly increased from 5.92 ± 1.49 ng/mL to 6.48 ± 1.47 ng/mL at 24 h. A similar trend was observed for bout 2, but without reaching significance. SPM significantly increased only after bout 1 from 0...
July 2016: Research in Sports Medicine
Paul T Cutrufello, Curt B Dixon, Gerald S Zavorsky
The present study examined the relationship between urine specific gravity (Usg), body mass (BM) and bioelectrical impedance determined variables [total body water (TBW), per cent TBW and impedance values] before and after a marathon (n = 25 men; 10 women). A significant reduction in BM (pre: 71.2 ± 12.4 kg; post: 69.6 ± 12.0 kg; p < 0.001) and an increase in Usg (pre: 1.009 ± 0.007; post: 1.018 ± 0.009; p < 0.001) was observed post-race. TBW was not significantly decreased (pre: 42...
July 2016: Research in Sports Medicine
Luana C Main, Stuart A Warmington, Emily Korn, Paul B Gastin
The purpose of the present study was to determine the efficacy of the multi-component training distress scale (MTDS), in monitoring swimmers prior to national competition. Twenty-one national-level adolescent swimmers completed eight weeks of testing. Once a week participants completed an 8 × 50 m sprint test, vertical jump test, sit-and-reach test, the MTDS and the Recovery-Stress Questionnaire for Athletes (REST-Q). All testing was incorporated into the swimmers' normal training programme. The REST-Q accounted for the following variances in performance: flexibility (14...
July 2016: Research in Sports Medicine
Kuo-Wei Tseng, Wei-Chin Tseng, Ming-Ju Lin, Hsin-Lian Chen, Kazunori Nosaka, Trevor C Chen
This study investigated whether maximal voluntary isometric contractions (MVIC) performed before maximal eccentric contractions (MaxEC) would attenuate muscle damage of the knee extensors. Untrained men were placed to an experimental group that performed 6 sets of 10 MVIC at 90° knee flexion 2 weeks before 6 sets of 10 MaxEC or a control group that performed MaxEC only (n = 13/group). Changes in muscle damage markers were assessed before to 5 days after each exercise. Small but significant changes in maximal voluntary concentric contraction torque, range of motion (ROM) and plasma creatine kinase (CK) activity were evident at immediately to 2 days post-MVIC (p < 0...
July 2016: Research in Sports Medicine
Jadwiga Szymura, Marcin Maciejczyk, Magdalena Wiecek, Grzegorz Maciejczyk, Szczepan Wiecha, Katarzyna Ochalek, Magdalena Kepinska, Zbigniew Szygula
The aim of the study was to evaluate the effectiveness of kinesio taping (KT) in anaerobic power recovery after eccentric exercise. The study was carried out on 10 healthy men. The participants performed two 60-min downhill runs with a constant intensity. Peak anaerobic power (PP) and mean power (MP) were measured before and five times after eccentric exercise. Anaerobic power was evaluated with the Maximal Cycling Sprint Test. After the downhill run, passive recovery (PR) and KT (lymphatic application) were applied in random order...
July 2016: Research in Sports Medicine
Maria Tinoco-Fernández, Miguel Jiménez-Martín, M Angeles Sánchez-Caravaca, Antonio M Fernández-Pérez, Jesús Ramírez-Rodrigo, Carmen Villaverde-Gutiérrez
Although all authors report beneficial health changes following training based on the Pilates method, no explicit analysis has been performed of its cardiorespiratory effects. The objective of this study was to evaluate possible changes in cardiorespiratory parameters with the Pilates method. A total of 45 university students aged 18-35 years (77.8% female and 22.2% male), who did not routinely practice physical exercise or sports, volunteered for the study and signed informed consent. The Pilates training was conducted over 10 weeks, with three 1-hour sessions per week...
July 2016: Research in Sports Medicine
Graeme G Sorbie, Henry H Hunter, Fergal M Grace, Yaodong Gu, Julien S Baker, Ukadike Chris Ugbolue
The study describes the differences in surface electromyography (EMG) activity of two forearm muscles in the lead and trail arm at specific phases of the golf swing using a 7-iron with three different grip sizes among amateur and professional golfers. Fifteen right-handed male golfers performed five golf swings using golf clubs with three different grip sizes. Surface EMG was used to measure muscle activity of the extensor carpi radialis brevis (ECRB) and flexor digitorum superficialis (FDS) on both forearms...
July 2016: Research in Sports Medicine
Thomas Neubauer, Julian Brand, Surjit Lidder, Manfred Krawany
A systematic review, following strict inclusion criteria, identified 32/48 low and 16/48 high-performance runners with stress fractures of the femoral neck. Surgical treatment was performed in 33/48 cases and was significantly higher (p = 0.009) in high-performance runners. Among the 28/48 runners who resumed running, there were significantly more lower-performance runners (23/32) than higher-performing runners (5/16) (p = 0.012) and significantly more non-displaced (22/30) than displaced fractures (6/18) (p = 0...
July 2016: Research in Sports Medicine
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