Acute effects of stretching duration on sprint performance of adolescent football players

Ιατρίδου, Γεωργία; Dionyssiotis, Yannis; Papathanasiou, Jannis; Kapetanakis, Stylianos; Galitsanos, S.

doi:10.32098/mltj.01.2018.06

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…Firstly, during PHV the vulnerability of bodily tissues increases, including changes to muscle-tendon junctions, bone-tendon junctions, ligaments, growth cartilage and bone density (9,23). This could be due to the many changes in size, shape and function that accompany the pubertal growth spurt (8,24,25). The mean of hours of exposure grows linearly from Pre-PHV to Post-PHV, showing statistically significant differences in the Pots-PHV group compared to the Pre-PHV group.…”

Section: Discussionmentioning

confidence: 99%

Injury risk and maturity status in Italian elite young football player

Toselli¹,

Benedetti²,

Miceli³

et al. 2021

Muscle Ligaments and Tendons J

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Background. Football is one of the world's most popular sport with most players being younger than 18 years. Playing football can induce beneficial health effects in youth, but there is also a high risk of injury. In young football players, the relationship between injury risk in the different periods from peak height velocity (PHV) remains unclear. The objective of the study was to investigate the associations between the injury risk and injury burden in young Italian football players in different periods from PHV (pre-PHV, PHV and Post-PHV). Methods. One hundred and forty-one young players (age = 13.9 ± 0.8 years) were subdivided in three groups on the basis of maturity status: PHV was set by taking 6 months before and 6 months after the age at PHV; the 12 months before this year were allocated as the year before PHV (Pre-PHV); the 12 months after this year were allocated as the year after PHV (Post-PHV). The number of injuries was calculated for each player per year; injuries were classified by location, type, body-site and mechanism of injury (traumatic or overuse). Training and match injury incidence was also calculated and resulted 4.2 ± 6.9 per 1000 h and 10.0 ± 34.2 per 1000 h, respectively. Results. In total 25214 hours of exposure were recorded. A total of 83 injuries were reported. Most injuries (77%) were located in the lower limbs; the most common injuries were joint/ligament injuries (36%). Traumatic injury showed a tendency to increase from the year before PHV to the year of PHV, and after this period a decrease can be observed; while, overuse injuries incidence remains constant until PHV, and then decreased in the year after PHV, albeit the differences were not statistically significant. A non-significant higher training injury incidence was found at PHV, while match injury incidence was higher at Pre-PHV. Days missed due to injury show an increase up to PHV, and then a considerable decrease in the year after PHV; the difference among groups were statistically significant (p = 0.039); moreover, the effect size between PHV and Post-PHV was moderate. The mean of exposure shows a significant increase from the year before PHV to the year after PHV (p = 0.0089), furthermore, the effect size between Pre-PHV and Post-PHV was large. Conclusions. The results of this study on young Italian football players confirm the overall increased vulnerability of the athletes in the PHV period. Great attention should be given to the maturity status of the subjects. To try to limit injuries, training programs should be calibrated on the state of maturity of the players and not on their chronological age.

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Section: Discussionmentioning

confidence: 99%

Injury risk and maturity status in Italian elite young football player

Toselli¹,

Benedetti²,

Miceli³

et al. 2021

Muscle Ligaments and Tendons J

View full text Add to dashboard Cite

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Decrease in muscle shortening and effect on strength and speed in adolescent soccer players (u-13)

Díaz-Cortés,

Hernández-Beltrán,

Solano-Ruiz

et al. 2024

Sportis Sci J

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In soccer, the variables of strength, speed and flexibility are associated with the athletic performance capacity of athletes, being these determinants not only to adapt to the demands of the competition, but at the same time flexibility can help to reduce the risk of injury. The aim of the study was to determine the effect on strength and speed after reducing muscle shortening. This is a quantitative study with an observational-analytical cross-sectional design. The evaluated sample consisted of 22 under-13 category players with an average age of 13.40±0.66 years, a height of 156.95±9.27 cm, and a body mass of 44.54±7.29 kg. They were randomly divided into a control group (n=10) and an experimental group (n=12). The experimental group underwent an 8-week intervention involving static stretches, incorporating the Proprioceptive Neuromuscular Facilitation method in the fourth week to decrease muscle shortening before the post-test. Knee extension and dorsiflexion were assessed using a goniometer, and physical abilities were measured through the My Jump Lab app, including Squat Jump, Counter Movement Jump, Counter Movement Jump with Arms, the Nordics hamstring test, and speed in 10, 20, and 30 meters using the Runmatic app. Significant results (p<0.05) were observed for jump height in Squat Jump, jump height, flight time, and speed in Counter Movement Jump, torque in the Nordics test, and speed in 30 meters. According to the findings of the present study it seems that flexibility influences vertical jumping ability and speed.

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Acute effects of stretching duration on sprint performance of adolescent football players

Cited by 2 publications

References 21 publications

Injury risk and maturity status in Italian elite young football player

Injury risk and maturity status in Italian elite young football player

Decrease in muscle shortening and effect on strength and speed in adolescent soccer players (u-13)

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