Off-season Training Effects on U19 Soccer Players

NCT ID: NCT05534191

Last Updated: 2025-09-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

53 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-01

Study Completion Date

2024-01-14

Brief Summary

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The goal of this randomized controlled trial is to evaluate whether functional strength and power training or traditional strength and power training during the off-season can improve soccer-specific performance in trained male U19 Norwegian soccer players.

The main questions it aims to answer are:

Does functional training lead to greater improvements in technical soccer skills (passing, shooting, dribbling) compared to traditional training?

Do both training modalities improve mobility, dynamic balance, sprint speed, change of direction, and jumping performance?

Researchers will compare the functional training group, the traditional training group, and a control group to see if either training approach provides superior performance benefits.

Participants will:

Take part in an 8-week intervention.

Complete two weekly strength sessions (functional or traditional depending on allocation).

Attend two weekly soccer sessions during the first 4 weeks (all groups).

Undergo a standardized test battery measuring mobility, balance, technical skills, sprinting, change of direction, and vertical jump before and after the intervention.

Detailed Description

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Conditions

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Soccer Performance

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Intervention

This group will use a functional training system developed specifically for football players to improve their physical strength and movement abilities on the field.

Group Type EXPERIMENTAL

Experimental, comparator and control

Intervention Type OTHER

To quantify the effect of a strength intervention for footballers on improved range of motion, balance, speed, jump height, and technical football skills compared to a training group performing basic power exercises and machine-based strength training and a control group.

Positive control

This group will use general strength exercises with the purpose of improving physical strength.

Group Type ACTIVE_COMPARATOR

Experimental, comparator and control

Intervention Type OTHER

To quantify the effect of a strength intervention for footballers on improved range of motion, balance, speed, jump height, and technical football skills compared to a training group performing basic power exercises and machine-based strength training and a control group.

Negative control

Control group A group that is not treated

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Experimental, comparator and control

To quantify the effect of a strength intervention for footballers on improved range of motion, balance, speed, jump height, and technical football skills compared to a training group performing basic power exercises and machine-based strength training and a control group.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

Male soccer players aged 16-20 years.

Active competitors in the Norwegian G19 0. Division or the Norwegian Tipping League (Senior 3. Division).

Minimum of eight years of organized soccer experience.

At least two years of structured resistance training experience.

No concurrent involvement in other structured physical activity programs.

Exclusion Criteria

History of lower-limb injury within the past three months.

Inability to meet the required training attendance (≥14 out of 16 sessions).

Participation in additional structured training programs outside the intervention.
Minimum Eligible Age

16 Years

Maximum Eligible Age

20 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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The Research Council of Norway

OTHER

Sponsor Role collaborator

Aalborg University

OTHER

Sponsor Role lead

Responsible Party

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Lasse Engberg Treu Lassen

Ph.D. candidate

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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SSA Steinkjer

Steinkjer, Trøndelag, Norway

Site Status

Countries

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Norway

Other Identifiers

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438956

Identifier Type: -

Identifier Source: org_study_id

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