Effect of Trigger Point Cryostimulation on Exercise-Induced Tremor in Adolescent Swimmers

NCT07480200 | Completed

• 1 other identifier: CRYO-TREMOR-2024
• Study Type: interventional
• Target: 34
• Locations: 1 country
• Sites: 1

Brief Summary

This study examines whether local cryostimulation of myofascial trigger points can reduce physiological tremor that occurs after intense physical exercise. Thirty-four adolescent competitive swimmers participate in a randomized crossover study comparing two conditions: local ice stimulation of trigger points and a control condition without intervention. Physiological tremor of the lower limbs is measured using accelerometry before and after a 30-second maximal tethered swimming effort. The study aims to determine whether targeted cryostimulation can attenuate exercise-induced neuromuscular tremor and improve post-exercise motor stability in young athletes.

Conditions

Physiological Tremor; Exercise-Induced Neuromuscular Fatigue

Keywords

Cryostimulation; Myofascial Trigger Points; Physiological Tremor; Adolescent Athletes; Swimming; Accelerometry

Outcome Measures

Primary Outcomes (1)

• Exercise-Induced Physiological Tremor of the Lower Limbs

  Physiological tremor of the lower limbs measured using accelerometry before and after a 30-second maximal tethered swimming effort. Tremor amplitude is quantified from accelerometer signals to assess the effect of local cryostimulation of myofascial trigger points.

  Immediately before and immediately after the 30-second maximal tethered swimming effort during the experimental session.

Study Arms (2)

Cryostimulation of Myofascial Trigger Points

EXPERIMENTAL

Participants receive local cryostimulation of identified myofascial trigger points in the quadriceps and hamstring muscles. Cold packs are applied for 60 seconds to the trigger points before performing a 30-second maximal tethered swimming effort. Physiological tremor of the lower limbs is measured before and after exercise using accelerometry.

Procedure: Cryostimulation of Myofascial Trigger Points

Control Condition (No Cryostimulation)

NO INTERVENTION

Participants complete the same experimental protocol without cryostimulation. After baseline tremor assessment, participants perform a 30-second maximal tethered swimming effort. No cooling intervention is applied before exercise. Physiological tremor of the lower limbs is measured before and after exercise using accelerometry under the same conditions as in the experimental arm.

Interventions

Cryostimulation of Myofascial Trigger Points PROCEDURE

Local cryostimulation is applied to identified myofascial trigger points in the quadriceps and hamstring muscles using cold packs for 60 seconds before a 30-second maximal tethered swimming effort.

Cryostimulation of Myofascial Trigger Points

Eligibility Criteria

• Age: 10 Years - 16 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)

You may qualify if:

• \- Competitive adolescent swimmers
• Age between 10 and 16 years
• Regular participation in swimming training (at least 3 training sessions per week)
• No current musculoskeletal injury affecting the lower limbs
• Ability to perform maximal swimming effort
• Written informed consent from participants and their legal guardians

You may not qualify if:

• \- Current lower limb injury or pain
• Neurological disorders affecting motor control
• Contraindications to cold exposure or cryotherapy
• Participation in other interventions that could affect neuromuscular performance

Sponsors & Collaborators

• Józef Piłsudski University of Physical Education: lead

Study Sites (1)

Józef Piłsudski University of Physical Education in Warsaw

Warsaw, Mazovian, Poland

Location

Related Links

• Related Info

MeSH Terms

Conditions

Essential Tremor

Condition Hierarchy (Ancestors)

Movement Disorders; Central Nervous System Diseases; Nervous System Diseases

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Model Details: This study uses a randomized reversed crossover design. Each participant completes two experimental conditions: local cryostimulation of myofascial trigger points and a control condition without intervention. The order of conditions is counterbalanced across participants to minimize potential order and carryover effects. Physiological tremor is measured at baseline and after a standardized exercise protocol in both conditions.

Study Record Dates

• First Submitted: March 13, 2026
• First Posted: March 18, 2026
• Study Start: May 1, 2024
• Primary Completion: June 1, 2024
• Study Completion: July 1, 2024
• Last Updated: March 24, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

PL (1)