Introduction: Dynamic knee valgus and poor technique during landing are not only key risk factors for lower extremity injuries especially knee injury, it also can reduce performance. Sportsmetrics soccer training is one of the successful knee injury prevention and enhancement performance protocols in female soccer players. But, the effect of Sportsmetrics soccer training has not been investigat...

The aim of this study was to compare the effect of two different training programmes - change of direction (COD) vs. agility (AG) - on straight sprint (SS), COD and AG test performances in young elite soccer players. Thirty-two soccer players (age: 14.5±0.9 years; height: 171.2±5.1 cm; body mass: 56.4±7.1 kg, body fat: 10.3±2.3%) participated in a short-term (6 weeks) training study. Players we...

Aim Very few studies have investigated the temporal specificity of melatonin (MEL) ingestion upon short-term maximal athletic performances. The aim of the present study was to explore the effect of morning MEL ingestion on cognitive and physical performances measured in the afternoon. Methods Twelve soccer players from a Tunisian squad (17.9 ± 1.3 years, 1.74 ± 0.06 m and 62.0 ± 8.8 kg) partici...

purpose despite the acknowledged impact of imagery on performance, ecologically sound studies investigating imagery and its effects on performance subcomponents in real games are surprisingly limited. the aim of this study was to investigate the effects of imagery training on passing improvement in elite soccer players. methods sixty nine soccer players taking part in the national championship ...

Background. Soccer is a popular sport with a large number of players all over the world. Besides, it has considerable economic and social effects. Thus, it is necessary to find out the factors which influence soccer players’ performance. Objectives. The purpose of this investigation was to determine whether there is a significant correlation between intellectual intelligence (I.Q) (Raven’s pro...

background: the present study was conducted to investigate the possible effects of l-carnitine and glutamine and their synergistic effects on male soccer athletes. methods: 28 male soccer players (21.1 ± 0.7 y) were enrolled in a randomized pre and post intervention, double-blind design. before the intervention, their performances were assessed by bruce protocol, and their body composition was ...

the aim of this study was to determine the relationship between age and the soccer performance of elite male soccer players were playing with an emphasis on post. sample of 396 soccer players (36 goalkeeper, 168 defenders, 123 midfielders and 69 forwards) participating in the 2010 world cup in south africa, with a mean age of 27.23 ± 3.71 years, height 181.45 ± 6.43 cm and body mass 75.89 ± 6.4...

Objectives: Polymorphisms in α-actinin-3 (ACTN3) gene are considered to be important in the genetic predisposition to human athletic performance. Most of the activities in soccer such as jumping, striking the ball, and running are considered plyometric and explosive. Performance power during such activities depends on the strength of the muscles involved. Therefore, high muscle strength i...

Performance analysis in sport is used to investigate the performance of teams and players across different sports. Research within this area, especially when focussing on the determinants of success, has grown rapidly in the last few years. During this time, the role of a new concept, 'situational variables' has emerged. This term includes the different game and situational conditions that may ...