NCT04456374

Brief Summary

The aim of this study is to investigate physiological characteristics, body composition and performance indicators among youth soccer players of four age categories (U-12, U-14, U-16, and U-18). Participants will undergo assessment of their body weight, body height and percent of body fat as well as performance testing including flexibility, strength, vertical jump, speed, repeated sprint ability, agility, dribbling and endurance.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
120

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Aug 2020

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 24, 2020

Completed
8 days until next milestone

First Posted

Study publicly available on registry

July 2, 2020

Completed
1 month until next milestone

Study Start

First participant enrolled

August 5, 2020

Completed
25 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 30, 2020

Completed
11 days until next milestone

Study Completion

Last participant's last visit for all outcomes

September 10, 2020

Completed
Last Updated

July 2, 2020

Status Verified

June 1, 2020

Enrollment Period

25 days

First QC Date

June 24, 2020

Last Update Submit

June 28, 2020

Conditions

Physical Performance

Keywords

soccerperformanceyouth

Outcome Measures

Primary Outcomes (8)

  • Flexibility

    Flexibility will be assessed by using the sit-and-reach test

    At baseline

  • Jumping ability

    Jumping ability will be assessed by measuring the vertical jumping performance using two different techniques: i) countermovement and ii) squat jump.

    At baseline

  • Maximum speed

    Maximum speed will be assessed over 10 m and 30 m by using light cells

    At baseline

  • Repeated sprint ability

    Repeated sprint ability will be assessed by performing five 30-m sprints with 25 seconds recovery period in-between, and using light cells.

    At baseline

  • Agility

    The ability to change direction while dribbling the ball (termed agility) will be assessed by using the short dribbling test (performed according to standard procedures).

    At baseline

  • Endurance

    Endurance will be assessed by using the Yo-Yo Intermittent Recovery test level 1

    At baseline

  • Maximal oxygen consumption (VO2max)

    Maximal oxygen consumption will be measured by open-circuit spirometry via breath-by-breath analysis during a graded exercise test to exhaustion on a treadmill, using automated pulmonary gas exchange system.

    At baseline

  • Knee flexor and extensor strength

    Concentric and eccentric peak torque of knee flexors and extensors in both limbs (dominant and non-dominant) will be assessed on an isokinetic dynamometer

    At baseline

Secondary Outcomes (3)

  • Body height

    At baseline

  • Body weight

    At baseline

  • Body composition

    At baseline

Study Arms (4)

Under-12 (U12) players

Other: Performance testing

Under-14 (U14) players

Other: Performance testing

Under-16 (U16) players

Other: Performance testing

Under-18 (U18) players

Other: Performance testing

Interventions

Performance testingOTHER

Soccer-specific performance will be evaluated by measuring flexibility, jumping ability, maximum speed, repeated spring ability, agility and endurance.

Under-12 (U12) playersUnder-14 (U14) playersUnder-16 (U16) playersUnder-18 (U18) players

Eligibility Criteria

Age11 Years - 18 Years
Sexmale(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Youth soccer players (aged 11-18 years) participating in regular soccer practice and competition with a training age of ≥ 3 years.

You may qualify if:

  • Aged between 11 and 12 years
  • Active soccer players participating in regular soccer practice and competition
  • Training age ≥ 3 years
  • Free of chronic diseases
  • Free of musculoskeletal injury

You may not qualify if:

  • Musculoskeletal injury
  • Chronic disease
  • Training age ≤ 2 years

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Thessaly, School of Physical Education and Sports Science

Trikala, 42100, Greece

Location

Study Officials

  • Athanasios Poulios, PhD

    University of Thessaly

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Ioannis G Fatouros, Prof

CONTACT

+30 24310 47047ifatouros@pe.uth.gr

Athanasios Z Jamurtas, Prof

CONTACT

+30 24310 47054ajamurt@pe.uth.gr

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

June 24, 2020

First Posted

July 2, 2020

Study Start

August 5, 2020

Primary Completion

August 30, 2020

Study Completion

September 10, 2020

Last Updated

July 2, 2020

Record last verified: 2020-06

Locations

GR(1)