The Role of Growth and Maturation in the Physical Development of Youth Male Soccer Players.

Biological maturation and growth influence youth athletes' physical performance during adolescence. However, how this association develops over time remains unclear. Thus, this study examined associations between biological maturity and sprint speed, vertical jumping ability, leg strength, and aerobic capacity between ages 14.

A Prospective Study on Maximal Oxygen Uptake and Cardiovascular Functions in 12-Year-Old Endurance Athletes and Their Non-Endurance-Trained Peers.

The maximal oxygen uptake (V̇O) is typically higher in endurance-trained adolescents than in non-endurance-trained peers. However, the specific mechanisms contributing to this remain unclear, as well as the impact of training during this developmental stage. This study aims to compare V̇O and cardiovascular functions between 12-year-old endurance athletes and non-endurance-trained over a 14-month period.

Relationships between bone age, physical performance, and motor coordination among adolescent male and female athletes.

Biological maturity significantly impacts youth athletes' physical performance throughout adolescence. However, how this differs between male and female youth athletes remains unclear. Thus, the present study aimed to assess associations between maturity, physical performance and motor coordination in females and males.

Effects of adding high-intensity training during an 8-week period on maximal oxygen uptake in 12-year-old youth athletes.

Purpose: Maximal oxygen uptake (V̇O ) increases during adolescence parallel to the increase in fat-free mass (FFM). How much endurance training adds to this effect is still controversial. Our aim was to investigate if inclusion of high-intensity training (HIT) during an 8-week training period was superior to low-intensity strength and coordination training in 12-year-old youth athletes concerning the effect on V̇O .

Associations between biological maturity level, match locomotion, and physical capacities in youth male soccer players.

Introduction: Biological maturity level has shown to affect sport performance in youths. However, most previous studies have used noninvasive methods to estimate maturity level. Thus, the main aim of the present study was to investigate the association between skeletal age (SA) as a measure of biological maturation level, match locomotion, and physical capacity in male youth soccer players.

Motion Analysis of Match Play in U14 Male Soccer Players and the Influence of Position, Competitive Level and Contextual Variables.

This study aimed to investigate match running performance in U14 male soccer players in Norway, and the influence of position, competitive level and contextual factors on running performance. Locomotion was monitored in 64 different U14 players during 23 official matches. Matches were played at two different competitive levels: U14 elite level ( = 7) and U14 sub-elite level ( = 16).

Physical capacity, not skeletal maturity, distinguishes competitive levels in male Norwegian U14 soccer players.

The main aim of the present study was to compare skeletal maturity level and physical capacities between male Norwegian soccer players playing at elite, sub-elite and non-elite level. Secondary, we aimed to investigate the association between skeletal maturity level and physical capacities. One hundred and two U14 soccer players (12.