Somatic and Psychological Profile of Athletes Across Seasonal Cycles

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is an observational, longitudinal study of team-sport athletes (football, volleyball, and ice hockey) to examine how seasonal training cycles impact physical and psychological factors. Participants include 200 adults (18–38) and 100 adolescents (14–17), with assessments before and after defined transitional periods such as off-season or competitive periods. The study collects data on body composition, eating behavior, physical activity, perfectionism, and body image to identify factors linked to more favorable adaptations. No intervention is administered; analysis focuses on natural changes over time and associations with training load and routine changes. DEXA is restricted to adults, and the protocol requires informed consent and appropriate guardianship for minors.

Why it matters

Who can join: the full rules

Inclusion Criteria

* Male or female athletes.
* Age 14 to 38 years.
* Participation in a team sport, including football, volleyball, or ice hockey.
* Regular training experience of at least 5 years.
* Current membership in a sports club.
* Valid medical clearance confirming no contraindications to sport participation.
* Ability to understand the study procedures and complete study questionnaires.
* Willingness to provide informed consent.
* For participants under 18 years of age, written consent from a parent or legal guardian.

Exclusion Criteria

* Does not meet one or more inclusion criteria.
* Pregnancy, due to exposure to ionizing radiation in adult participants undergoing DEXA.
* Refusal or inability to provide informed consent.
* For minors, absence of parental or legal guardian consent.
* Any medical or organizational condition that, in the investigators' opinion, would prevent safe participation or valid completion of the study procedures.

DEXA will be performed only in adult participants.

Where it's running

• The Jerzy Kukuczka Academy of Physical Education in Katowice
  Katowice, Silesian Voivodeship, Poland Recruiting

Study contacts

• Principal investigator: Grzegorz Zydek, PhD — The Jerzy Kukuczka Academy of Physical Education in Katowice, Mikołowska 72a, Poland, 40-065
• Study coordinator: Grzegorz Zydek, PhD
• Email: g.zydek@awf.katowice.pl
• Phone: +48504332664

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.