Starters and non-starters soccer players in competition: is physical performance increased by the substitutions?

Background: Non-starters soccer players have a great role within the team, being indispensable to reduce fatigue, as well as to maintain and increase the team's performance during the match.

Objective: This study aimed to analyze the physical performance of the starter and non-starters players during competitive soccer matches.

Methods: Twenty-two soccer players participated in this study, divided into two groups according to the role in the match (starters or non-starters).

Relationship between age, category and experience with the soccer referee's self-efficacy.

Soccer referees (SRs) encounter stressful situations during competitions and sometimes even outside them, which may affect their decision making. Therefore, it is important that they possess or acquire optimal levels of self-efficacy, since it is related to less stress during competition, also guaranteeing sports performance and prevent sports abandonment. The objectives of this study were to characterize the profile, in terms of self-efficacy, of SRs depending on their category, age, and experience and to determine the relationship of these factors on SR self-efficacy.

How and why do young soccer players change the Flow State?

Flow State (FS) as well as other psychological characteristics influence sports performance (SP) and could be relevant according to the playing position in team sports, such as the soccer where players have different specific functions within the team. The aim of this study was to evaluate the difference in FS dimensions in young soccer players between training time (TR) and official competition time (CM), according to the playing position and, to find relationships between FS dimensions and physical characteristics and academic performance. A total of 141 U16 soccer players were selected (14.

Self-Concept and Physical Activity: Differences Between High School and University Students in Spain and Portugal.

The period of adolescence stands out as a critical and decisive phase, first because it leaves its mark on personality development, which is affected by psychosocial factors, and second because the healthy lifestyle habits acquired during this stage form a foundation for adulthood. The objective of the present study was first to evaluate the levels of participation in physical activities (PA) and of self-concept in high school and university students, and second to find relationships between these psycho-physical variables. Four hundred and forty adolescents ranging in age from 16 to 20 years, from Spain and Portugal, participated in this study (cross-sectional design).

Somatotype and Body Composition in Young Soccer Players According to the Playing Position and Sport Success.

Cárdenas-Fernández, V, Chinchilla-Minguet, JL, and Castillo-Rodríguez, A. Somatotype and body composition in young soccer players according to the playing position and sport success. J Strength Cond Res 33(7): 1904-1911, 2019-Soccer players undergo an evolution in their body composition throughout the growth and passage through the different base stages, that is, childhood, puberty, and adolescence.

Cardiovascular program to improve physical fitness in those over 60 years old - pilot study.

Background: In Spain, more than 50% of 60-year-olds are obese. Obesity is a disease with serious cardiovascular risks. The mortality rate for cardiovascular disease in Spain is 31.

Relationship between muscular strength and sprints with changes of direction.

Sprints with changes of direction (COD) have been traditionally associated with performance in team sports. Jumping tests have been used as predictors of COD; however, there are not too many studies analyzing how dominance affects the best performance of the turn. The purpose of this study was to explore the relationship between tests pertaining to jumps (1 and 2 legs) and COD (right and left turns).