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Not yet recruitingNCT06451367YoungSoccerUpdated Jun 24, 2024

Cardiovascular and Endocrine Response to Muscular Training Program of Young Soccer Players Aged 14-18 Years

An interventional study of neuromuscular programm in Sport Injury, Hormone Disturbance and Cardiovascular Abnormalities, sponsored by Hôpital Fribourgeois. Not yet recruiting. Open to male participants aged 14 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-06-24.

Sponsored by Hôpital Fribourgeois · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Oct 2024, 2 years ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
14 Years to 18 Years
Sex
Male
01

Study summary

This study focuses on understanding the cardiovascular and endocrine responses of young soccer players aged 14 to 18 years to a muscular training program. Adolescence is a critical period for physiological development, and investigating these responses can provide insights crucial for athletic performance and overall health. The benefits include promoting overall health, reducing injury risk, and enhancing scientific knowledge. However, intensive training programs may lead to overtraining and potential negative health outcomes if not carefully monitored. The study aims to assess whether additional neuromuscular development over 12 weeks can enhance players' physical fitness and hormonal changes. By examining these outcomes, the study seeks to inform evidence-based training protocols for optimizing adolescent athletes' health and performance in soccer. The study design involves a prospective single-center randomized cohort to investigate these responses comprehensively.

Read the detailed description

In this study, participants aged 14 to 18, who are part of an elite football team in Fribourg, Switzerland, are randomly assigned to either a control group or an intervention group (N=30, with 15 participants in each group). The control group undergoes regular football training, while the intervention group additionally participates in a 12-week neuromuscular development program. Before and after the intervention, various measurements are taken for each participant, including blood steroid profile, heart rate variability, lung function (VO2 max with lactate), body composition using the Inbody 770 machine, and muscular strength. The control group exclusively engages in regular football training throughout the study duration.

02

Conditions studied

  • Sport Injury
  • Hormone Disturbance
  • Cardiovascular Abnormalities
03

In context

Endocrine System Diseases

322 studies on the registry are indexed under Endocrine System Diseases; 51 are open to participants now.

This study's planned enrollment of 30 is below the median of 69 across 221 interventional studies indexed under Endocrine System Diseases.

Browse Endocrine System Diseases studies →

Lead sponsor

Hôpital Fribourgeois is the lead sponsor of 18 studies on the registry; 12 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
14 Years to 18 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Engaging in a football training program.
  • No history of injuries in the last 6 months requiring surgical intervention.
  • No intake of anabolic supplements.
  • Age 14-18 years old.
  • Normal (18.5 - 24.9 kg/m²).

Parents and participants must consent to receive all pertinent information discovered during the study, such as potential cardiovascular diseases or hormonal disorders.

Participants must also consent to the sharing of certain private information with their parents or legal guardians. This includes information regarding cannabis use, as well as the consumption of anabolic steroids and other controlled substances. This additional consent ensures transparency and openness in sharing relevant health-related information with parents or legal guardians, particularly for participants under 18 years of age.

For participants under the age of 18, parental consent or consent from a legal guardian is mandatory in addition to the participant's consent. This ensures that minors have parental approval to take part in the study.

All participants, regardless of age, must provide their voluntary consent to participate in the study. For participants under the age of 18, consent from one of their parents or legal guardians is also required in addition to the participant's consent.

Exclusion criteria

Exclusion Criteria:

  • Engaging in other supplemental individual exercise programs.
  • Being a smoker (>1 cigarette/week).
  • Using any medication at the time of testing.
  • Having any disease.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    Intervention

    Regular football training and neuromuscular training program for 12 weeks

    Other: neuromuscular programm

  • No intervention
    Controle

    Regular football training

Interventions

  • Otherneuromuscular programm

    neuromuscular programm during 12 weeks (3 times a week, 10 minutes each time)

06

What researchers measure

Primary outcomes

  1. VO2 max, lactate

    The study aims to examine the effects of a 12-week supplemental muscle program on cardiopulmonary exercise testing, focusing on key metrics such as maximum oxygen uptake (VO2max in mL/kg/min with capillary lactate measurement in mmol/L)

    Time frame: Before the start of the 12-week muscular training program (pre-intervention) and immediately after the 12-week intervention (post-intervention).

  2. Heart rate variability

    The study aims to examine the effects of a 12-week supplemental muscle program on cardiopulmonary exercise testing, focusing on key metrics such as heart rate variability (HRV in ms).

    Time frame: Before the start of the 12-week muscular training program (pre-intervention) and immediately after the 12-week intervention (post-intervention).

  3. Body composition

    The study aims to examine the effects of a 12-week supplemental muscle program on cardiopulmonary exercise testing, focusing on key metrics such as body composition (percentage of body fat, muscle mass in kg). Height will be measured in centimeters (cm) and weight in kilograms (kg) to calculate the Body Mass Index (BMI) in kg/m²

    Time frame: Before the start of the 12-week muscular training program (pre-intervention) and immediately after the 12-week intervention (post-intervention).

Secondary outcomes

  1. Hormonal changes: Cortisol

    The study includes a secondary endpoint involving the measurement of cortisol levels (in μg/dL) before and after the muscular training program. These measurements offer valuable insights into the endocrine adaptations induced by the training regimen. By analyzing changes in cortisol levels, researchers can gain a deeper understanding of the hormonal milieu associated with muscle development, recovery, and overall physiological balance.

    Time frame: Before the start of the 12-week muscular training program (pre-intervention) and immediately after the 12-week intervention (post-intervention).

  2. Hormonal changes: Testosterone

    The study includes a secondary endpoint involving the measurement of testosterone levels (in ng/dL) before and after the muscular training program. These measurements offer valuable insights into the endocrine adaptations induced by the training regimen. By analyzing changes in testosterone levels, researchers can gain a deeper understanding of the hormonal milieu associated with muscle development, recovery, and overall physiological balance.

    Time frame: Before the start of the 12-week muscular training program (pre-intervention) and immediately after the 12-week intervention (post-intervention).

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Jun 2024; primary completion for Oct 2024, 4 months later.

Of 45 non-industry interventional studies with no phase under Endocrine System Diseases, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 39. This study's planned 4 months is below that.

Counting every sponsor, half of 52 studies reached it within 23 months; a quarter within 11 and three quarters within 35.

Endocrine System Diseases covers many different conditions, not one, so the studies compared here vary widely. Read these figures as a rough guide.

How these figures are worked out, and which studies are left out of them.

Registered
May 27, 2024
First posted
Jun 11, 2024
StartEst.
Jun 28, 2024
Primary completionEst.
Oct 30, 2024
CompletionEst.
Dec 31, 2024
Last update
Jun 24, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 24, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06451367
Lead sponsor
Hôpital Fribourgeois
Responsible party
Sponsor
First posted
Jun 11, 2024
Start date
Jun 28, 2024 (estimated)
Primary completion
Oct 30, 2024 (estimated)
Completion
Dec 31, 2024 (estimated)
Last update
Jun 24, 2024

Study contacts

Maristella Santi, Dr. med
Contact
maristella.santi@h-fr.ch
079 720 95 20
Johannes Wildhaber-Brooks, Prof. Dr. med.
Contact
maristella.santi@h-fr.ch
026 306 00 00

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2024. You cannot join it, but the record below documents what was studied.

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