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Tom Clifford, Will Abbott, Susan Y. Kwiecien, Glyn Howatson, and Malachy P. McHugh

MS and restore muscle function in the 3 days following a soccer match. Accordingly, the aim was to examine if PCM garments (with a 15°C freeze-thaw temperature), worn for 3 hours after a soccer match, could accelerate functional and perceived recovery in elite soccer players after a competitive

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Dirk Krombholz, Luca Daniel, Peter Leinen, Thomas Muehlbauer, and Stefan Panzer

correlations between the body height, body weight, and foot width significantly co-varied with the postural control parameters under the eyes closed condition. In the present study, participants were young sub-elite soccer players who had up to 12 years of soccer experience with four to five practice sessions

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Javier Raya-González, Fabio Yuzo Nakamura, Daniel Castillo, Javier Yanci, and Maurizio Fanchini

along the microcycle) and do not usually have access to complex devices to quantify the external load. Studies so far in elite soccer have identified potential links of internal load with noncontact injury. Using the sRPE method of quantifying internal load, 17 Fanchini et al 13 found a significant

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Lasse Ishøi, Kasper Krommes, Mathias F. Nielsen, Kasper B. Thornton, Per Hölmich, Per Aagaard, Juan J.J. Penalver, and Kristian Thorborg

of thigh muscle strain injury in male elite soccer players 2 – 4 and the potential role of high muscle strength capacity to mitigate this risk, 2 we aimed to assess and compare maximal hamstring and quadriceps strength capacity in male elite soccer players at ages ranging from U-13 to the senior

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Mauricio Castro-Sepulveda, Jorge Cancino, Rodrigo Fernández-Verdejo, Cristian Pérez-Luco, Sebastian Jannas-Vela, Rodrigo Ramirez-Campillo, Juan Del Coso, and Hermann Zbinden-Foncea

to determine whether basal serum concentrations of testosterone or cortisol, or the testosterone/cortisol ratio were related to Na + and fluid losses in sweat. Methods A total of 22 male elite soccer players from the Chilean professional league participated in the study. Age, body characteristics

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Gustavo Monnerat, Alex S. Maior, Marcio Tannure, Lia K.F.C. Back, and Caleb G.M. Santos

, VO 2 max, and recovery supported the possibility of genomic predictors affecting trainability. 7 – 11 However, few studies have examined the link between genetic factors within elite soccer players and their physiological and performance parameters. According to our hypothesis, using a complementary

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Paul S. Bradley and Jack D. Ade

– 674 . PubMed doi:10.1s080/02640410500482529 10.1080/02640410500482529 16766496 3. Castellano J , Alvarez-Pastor D , Bradley PS . Evaluation of research using computerised tracking systems (Amisco® and Prozone®) to analyse physical performance in elite soccer: a systematic review . Sports Med

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Rafael A.B. Tedesqui and Terry Orlick

The purpose of this study was to qualitatively explore the attentional focus experienced by elite soccer players in different soccer positions and performance tasks of both closed and open skills. No previous studies have explored elite soccer players’ attentional skills from a naturalistic and qualitative perspective in such detail. Data collection consisted of individual semistructured interviews with eight highly elite Brazilian soccer players from five main soccer positions, namely goalkeeper, defender, wing, midfielder, and forward. Important themes were positive thinking, performing on autopilot, and relying on peripheral vision. For example, thematic analysis indicated that in tasks where there may be an advantage in disguising one’s intentions (e.g., penalty kick), relying on peripheral vision was essential. Early mistakes were among the main sources of distractions; thus, players reported beginning with easy plays as a strategy to prevent distractions. Implications for applied sport psychology were drawn and future studies recommended.

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Moisés de Hoyo, Alejandro Álvarez-Mesa, Borja Sañudo, Luis Carrasco, and Sergio Domínguez

Context:

Kinesio taping (KT) is a new taping technique increasingly used in sports medicine to improve muscle performance; however, its real effect is not entirely known.

Objective:

To assess the immediate effects of KT on muscle performance in young healthy elite soccer players.

Design:

Crossover study.

Setting:

University laboratory.

Participants:

Eighteen young elite soccer players voluntarily participated in the study (mean ± SEM: age 18.20 ± 2.45 y, height 1.76 ± 3.56 m, body mass 65.25 ± 3.76 kg, body-mass index 20.12 ± 1.25 kg/m2).

Interventions:

Each subject completed 2 different protocols, with and without KT. Interventions were performed in a random order, with a washout period between conditions of 1 wk.

Main Outcome Measures:

Outcome measures included tensiomyographic response in the vastus lateralis and vastus medialis, power output with 30 and 50 kg, countermovement jump, and 10-m sprint.

Results:

Data showed no significant differences for any of the outcomes analyzed between interventions.

Conclusions:

KT does not produce a short-term improvement in muscle performance in young elite soccer players.

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Robin T. Thorpe, Anthony J. Strudwick, Martin Buchheit, Greg Atkinson, Barry Drust, and Warren Gregson

Purpose:

To quantify the relationship between daily training load and a range of potential measures of fatigue in elite soccer players during an in-season competitive phase (17 d).

Methods:

Total high-intensity-running (THIR) distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), countermovement-jump height (CMJ), postexercise heart-rate recovery (HRR), and heart-rate variability (Ln rMSSD) were analyzed during an in-season competitive period (17 d). General linear models were used to evaluate the influence of daily fluctuation in THIR distance on potential fatigue variables.

Results:

Fluctuations in fatigue (r = −.51, large, P < .001), Ln rMSSD (r = −.24, small, P = .04), and CMJ (r = .23, small, P = .04) were significantly correlated with fluctuations in THIR distance. Correlations between variability in muscle soreness, sleep quality, and HRR and THIR distance were negligible and not statistically significant.

Conclusions:

Perceived ratings of fatigue and Ln rMSSD were sensitive to daily fluctuations in THIR distance in a sample of elite soccer players. Therefore, these particular markers show promise as simple, noninvasive assessments of fatigue status in elite soccer players during a short in-season competitive phase.