Association Between Weekly Strength Training Load and Perceived Physical Performance in Non-Professional Soccer Players

NCT07408739 | Active Not Recruiting

• 1 other identifier: FutRend
• Study Type: observational
• Target: 154
• Locations: 1 country
• Sites: 1

Brief Summary

Background. Strength training is a key component of physical performance in soccer. However, in non-professional players, evidence regarding the relationship between weekly strength training load and perceived physical performance remains limited, particularly when considering factors such as fatigue, pain, and motivation. Objective. To analyze the association between self-reported weekly strength training load and perceived physical performance in non-professional soccer players, and to examine the influence of perceived fatigue, musculoskeletal pain, and exercise motivation on this relationship. Methods. An observational, analytical, cross-sectional study conducted using a structured, self-administered online questionnaire. The dependent variable will be perceived physical performance, assessed using the Perceived Performance in Sports Questionnaire. Independent variables will include weekly strength training load, measured using the session Rating of Perceived Exertion (sRPE), perceived fatigue assessed with the Fatigue Severity Scale, and motivation toward training and sport participation assessed with the Behavioral Regulation in Exercise Questionnaire-2. Adjustment variables will include age, sex, playing position, competitive level, sporting experience, mean match playing time (minutes per match), body mass index, and overall weekly training load. Descriptive analyses and multivariable regression models will be performed. Expected results. To identify the relationship between weekly strength training load and perceived physical performance, and to determine the physical and psychosocial factors associated with lower self-perceived performance in non-professional soccer players.

Conditions

Athletic Injuries

Keywords

Soccer; Strength Training; Athletic Performance; Fatigue; Motivation

Outcome Measures

Primary Outcomes (1)

• Measurement of perceived physical performance

  This variable will be assessed using the Spanish version of the Perceived Performance in Sports Questionnaire. This instrument measures athletes' subjective evaluation of their own performance during competition or sport practice. It consists of five items rated on a 1-5 Likert scale, with the final score calculated as the mean of the items; higher scores indicate better perceived performance. As no specific cut-off points are established, the score will be interpreted as a continuous variable.

  Screening visit

Secondary Outcomes (3)

• Measurement of weekly strength training load

  Screening visit

• Measurement of perceived fatigue

  Screening visit

• Measurement of motivation toward training and sport participation

  Screening visit

Other Outcomes (8)

• Measurement of age

  Screening visit

• Measurement of gender

  Screening visit

• Measurement of playing position

  Screening visit

Study Arms (1)

Observational group

Non-professional soccer players

Other: Soccer players sample

Interventions

Soccer players sample OTHER

Active non-professional (amateur) soccer players.

Observational group

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Active non-professional (amateur) soccer players.

You may qualify if:

• Age between 18 and 40 years.
• Competing in the 3ª RFEF category.
• Male sex.
• Having at least two years of seniority in federated football.
• Signing the informed consent document.

You may not qualify if:

• Athletes with injuries lasting more than 3 months during the last season.
• Participation in fewer than two weekly group training sessions (one or none).
• Having undergone lower-limb surgery in the last 24 months.
• Players who, despite being able to attend training sessions on a continuous basis, have a regular occupational activity that causes such a high physical workload that their sports performance is limited in training and/or competition.

Sponsors & Collaborators

• University of Oviedo: lead

Study Sites (1)

Universidad de Oviedo

Oviedo, Principality of Asturias, 33006, Spain

Location

MeSH Terms

Conditions

Athletic Injuries; Fatigue

Condition Hierarchy (Ancestors)

Wounds and Injuries; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: February 6, 2026
• First Posted: February 13, 2026
• Study Start: February 12, 2026
• Primary Completion: April 13, 2026
• Study Completion: May 11, 2026
• Last Updated: May 1, 2026

Record last verified: 2026-02

Locations

ES (1)