Physical Fitness Performance of Young Professional Soccer Players Does not Change During Several Training Seasons in a Spanish Elite Reserve Team

2018 ◽  
Vol 32 (12) ◽  
pp. e60
Keyword(s):  
Physical Fitness ◽  
Soccer Players ◽  
Young Professional ◽  
Professional Soccer

scholarly journals Post-activation Potentiation: Effects of Different Conditioning Intensities on Measures of Physical Fitness in Male Young Professional Soccer Players

2019 ◽  
Vol 10 ◽  
Author(s):  
Cristina Petisco ◽  
Rodrigo Ramirez-Campillo ◽  
Daniel Hernández ◽  
Oliver Gonzalo-Skok ◽  
Fabio Y. Nakamura ◽  
...  
Keyword(s):  
Physical Fitness ◽  
Soccer Players ◽  
Young Professional ◽  
Professional Soccer

scholarly journals Regions at Risk in the Knee Joint of Young Professional Soccer Players: Longitudinal Evaluation of Early Cartilage Degeneration by Quantitative T2 Mapping in 3 T MRI

Cartilage ◽  
2020 ◽  
pp. 194760352092477
Author(s):  
Hanna Schenk ◽  
David Simon ◽  
Leonie Waldenmeier ◽  
Christoph Evers ◽  
Rolf Janka ◽  
...  
Keyword(s):  
At Risk ◽  
Knee Joint ◽  
T2 Mapping ◽  
Cartilage Damage ◽  
Cartilage Degeneration ◽  
Soccer Players ◽  
Young Professional ◽  
Professional Soccer ◽  
Playing Time

Purpose. The study aims to detect regions at risk for (pre-)osteoarthritis in the tibiofemoral joint of young professional soccer players by evaluating cartilage composition by T2 mapping in a 3 T magnetic resonance imaging setting. Methods. In this longitudinal study, 20 professional adolescent soccer players were included. Tibiofemoral cartilage was assessed by quantitative T2 mapping and T2 values were evaluated by regions of interest analysis. Statistical evaluation, using Wilcoxon signed-rank tests, was performed to compare global T2 values and subregional T2 values between a baseline and a follow-up investigation 4.3 years later. Based on the average of playing time (15 years) we divided the cohort in 2 groups and differences were evaluated. Results. When comparing baseline and follow-up, our findings showed statistically significant increases of the global medial tibial and femoral T2 values. The most noticeable results of the subregional T2 analysis were statistically significant increases in the medial posterior zones (deep femoral 36.1 vs. 39.5, P = 0.001; superficial femoral 57.0 vs. 62.4, P = 0.034; deep tibial 28.3 vs. 34.1, P = 0.009; superficial tibial 43.2 vs. 55.3, P = 0.002). Conclusion. The elevation of T2 values in the medial, especially medial posterior, compartment of the knee joint indicates that these regions are at risk for early cartilage degeneration already at the time of adolescence. The findings can help individualize and optimize training concepts and to be aware of the chronic stress on these vulnerable areas. Prevention programs should be established in young players to avoid further cartilage damage.

Association between physical fitness and mean platelet volume in professional soccer players

2015 ◽  
Vol 53 (10) ◽  
Author(s):  
Rafael Alis ◽  
Fabian Sanchis-Gomar ◽  
Davide Ferioli ◽  
Antonio La Torre ◽  
Andrea Bosio ◽  
...  
Keyword(s):  
Physical Fitness ◽  
Mean Platelet Volume ◽  
Soccer Players ◽  
Platelet Volume ◽  
Professional Soccer

scholarly journals Effects of chronic betaine supplementation on performance in professional young soccer players during a competitive season: a double blind, randomized, placebo-controlled trial

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Hadi Nobari ◽  
Jason M Cholewa ◽  
Alfonso Castillo-Rodríguez ◽  
Mehdi Kargarfard ◽  
Jorge Pérez-Gómez
Keyword(s):  
Peak Power ◽  
Muscular Strength ◽  
Soccer Players ◽  
Repeated Sprint Ability ◽  
Young Professional ◽  
Professional Soccer ◽  
Repeated Sprint ◽  
Competitive Season ◽  
Betaine Supplementation ◽  
Sprint Ability

Abstract Objective Various nutritional strategies are adopted for athletes to maintain and to improve performance during the competition season. Betaine may enhance performance during a competitive season by increasing the testosterone to cortisol ratio and reducing systemic inflammation. The aim of this study was to investigate the effect of betaine supplementation on the bio-motor abilities in young professional soccer players. Methods Twenty-nine young professional soccer players (age, 15.5±0.3 years) were matched by position and randomly assigned to one of two groups for 14 weeks: betaine (BG, 2 g/day; n=14) or placebo (PG n=15). Diet was standardized by a nutritionist, and measures of muscular power (countermovement jump: CMJ), change of direction: modified 5-0-5), acceleration (10 m sprint), sprint performance (30 m sprint time: SpT), muscular strength (leg press and bench press one repetition maximum: 1-RM), repeated sprint ability (running-based anaerobic sprint test: RAST), and aerobic capacity (30-15 intermittent fitness test) were assessed in the pre (P1), mid (P2) and post (P3) season over the course of 5 days. All subjects participated in one soccer match and five training sessions per week. Results Significant (p < 0.05) group x time interactions were found for maximal oxygen uptake (VO2max), anaerobic peak power, and muscular strength favoring BG at P2 and P3 compared to P1. There were meaningful (p < 0.05) group x time interactions for CMJ, SpT, and peak power during the RAST that favored the BG. Conclusions 14-week of betaine supplementation increased predicted 1-RM, VO2max, and repeated sprint ability performance in youth professional soccer players. Betaine supplementation seems to be a useful nutritional strategy to improve and to maintain performance during a competitive soccer season.

scholarly journals Bilateral and Unilateral Asymmetries of Isokinetic Strength and Flexibility in Male Young Professional Soccer Players

2013 ◽  
Vol 36 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Abdolhamid Daneshjoo ◽  
Nader Rahnama ◽  
Abdul Halim Mokhtar ◽  
Ashril Yusof
Keyword(s):  
Hip Joint ◽  
Dynamic Control ◽  
Young Male ◽  
Movement Pattern ◽  
Quadriceps Strength ◽  
Soccer Players ◽  
Speed Ratio ◽  
Joint Flexibility ◽  
Young Professional ◽  
Professional Soccer

This study investigated bilateral and unilateral asymmetries of strength and flexibility in male young professional soccer players. Thirty-six soccer players (age: 18.9 ± 1.4 years) participated in this study. A Biodex Isokinetic Dynamometer was used to assess the hamstring and quadriceps strength at selected speeds of 60°/s, 180°/s and 300°/s. Hip joint flexibility was measured using a goniometer. No difference was observed in conventional strength ratio, dynamic control ratio and fast/slow speed ratio between the dominant and non-dominant legs (p>0.05). All but one of the players (97.2%) had musculoskeletal abnormality (bilateral imbalance > 10%) in one or more specific muscle groups. The dominant leg had greater hip joint flexibility compared with the non-dominant leg (108.8 ± 10.7° versus 104.6 ± 9.8°, respectively). The findings support the hypothesis that physical performance and movement pattern experienced during soccer playing may negatively change the balance of strength in both legs (bilateral strength balance), but not on the same leg of the young male professional soccer players. The results can be helpful for trainers and coaches to decide whether the players need to improve their balance and strength which in turn may prevent injury. It is suggested that in professional soccer training, quadriceps and hamstrings muscle strength, as well as hip joint flexibility should not be overlooked.

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