AzTrials
AzTrials

HealthyCryotherapyNCT02506283

The Effect of Thermotherapy on Recovery and Performance

A study testing Zamar Therapy CT clinic in people with Healthy, run by University of Applied Sciences and Arts of Southern Switzerland at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This study investigates the effects of cooling on the recovery and performance characteristic in young healthy subjects. The study is divided in two projects: Project A: investigates the effects of 20 min. Read more about this study

Who is it for?
Ages 18 to 30 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
Zamar Therapy CT clinic
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
22 participants
Where
1 siteSwitzerland
Study dates
May 2015to May 2019
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 30 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • only healthy young subjects 18-30 years
  • no musculoskeletal surgery in trunk and lower extremities
  • injury history in trunk and lower extremity for more than one year
  • subjects taking anticonceptive medication are allowed to participate

Who cannot join

  • actual injuries or injuries for less than one year in trunk and /or lower extremities
  • injury history in trunk and lower extremity for more than one year with complaints
  • anxiety of cooling
  • subjects on medication
  • pace maker
  • cardiovascular disease
Show all 10Show fewer
  • pregnancy
  • skeletal problems
  • appendectomy for less than two years
  • Morbus Raynaud syndrome

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • University of Applied Sciences and Arts of Southern Switzerland SUPSI

    Landquart, Kanton Graubünden, 7302

Other trials in Switzerland

About this study

Official title: The Effect of Cryotherapy on Recovery and Performance: A Randomized Controlled Double Blind Trial

This study investigates the effects of cooling on the recovery and performance characteristic in young healthy subjects. The study is divided in two projects:

Project A: investigates the effects of 20 min. post-exercise cooling on vertical jump performance and delayed onset muscle soreness and rated perceived exertion.

Project B: investigates the effects of 20 min. pre-exercise cooling on maximal voluntary contraction of the right M. quadriceps femoris and delayed onset muscle soreness and rated perceived exertion.

Read the detailed description

The aim of this study is to investigate the effects of a 20 min. external cooling application (+8°C ) versus a external thermo neutral application (+32°C) up to 72 hours post application.

The study is divided in two projects:

Project A: This study is focusing on the recovery process after a max. jump performance (3x30 counter movement jumps). Directly after the exercise subjects receive a cooling or thermo-neutral application. Recovery characteristics measured by vertical jump performance (objective) and delayed onset muscle soreness and rated perceived exertion (subjective) are measured in function of time up to 72 hours post cooling intervention.

Project B: This study is focusing on the effect of 20 min. cooling or thermo-neutral application on the M. quadriceps femoris performance (MVC). After the thermo-application, the 60% endurance MVC is measured by means of surface EMG (OT Bioelettronica 10-750 Hz) in a ergometer chair 90° degrees knee flexion (Cor 1 Bioelettronica). Muscle conduction velocity, MVC (objective), delayed onset muscle soreness and rated perceived exertion (subjective) are measured in function of time up to 72 hours post thermo-application.

Conditions
Healthy
Being tested
Zamar Therapy CT clinic
Keywords
cryotherapy, recovery, athletic performance, maximum voluntary contraction, rated perceived exertion, delayed onset muscle soreness, jump performance

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Zamar Therapy CT clinicDevice

    Zamar Therapy is a certified medical product (directive 93/42/EEC and ISO 134 85:2012) (www.zamarmedical.com)

Study groups in NCT02506283
Study groupRoleWhat they receive
Project A: Single Cooling InterventionExperimentalSubjects in this study receive a single post-exercise intervention (3x 30 counter movement jumps), consisting of a 20 minute external cooling (temperature of 8°C) application (Zamar Therapy CT clinic) applied to both thighs.
Receives: Device: Zamar Therapy CT clinic
Project A: Single Thermoneutral InterventionSham comparatorSubjects in the control group receive a single post-exercise (3x 30 counter movement jumps) sham intervention, consisting of a 20 minute external thermoneutral (temperature of 32°C) application (Zamar Therapy CT clinic) applied to both thighs.
Receives: Device: Zamar Therapy CT clinic
Project B: Single Cooling InterventionExperimentalSubjects in this study receive a single pre-exercise intervention (3x MVC) consisting of a 20 minute external cooling (temperature of 8°C) application (Zamar Therapy CT clinic) applied to both thighs.
Receives: Device: Zamar Therapy CT clinic
Project B: Single Thermoneutral InterventionSham comparatorSubjects in the control group receive a single pre-exercise (3x MVC) sham intervention, consisting of a 20 minute external thermoneutral (temperature of 32°C) application (Zamar Therapy CT clinic) applied to both thighs.
Receives: Device: Zamar Therapy CT clinic

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Project A: Delayed-onset Muscle Soreness (DOMS)

    The subjective recovery characteristics "Delayed-onset muscle soreness (DOMS)" was rated on a 0-10 cm visual analog scale. DOMS was assessed in a squat position (90° knee angle, with brief holding of maximum 3 seconds) ranging from 0(no soreness) to 10 (severe soreness). Higher values mean more DOMS and therefore less recovery.

    Measured: 72 hours

  2. Project A: Ratings of Perceived Exertion (RPE)

    The subjective recovery characteristics " Ratings of perceived exertion (RPE)" was rated on a 6-20 Borg scale (from 6 = "no exertion at all" to 20 = "Maximal exertion") in a standing position. The higher value means more exertion and therefore less recovery.

    Measured: 72 hours

  3. Project A: Vertical Jump Performance (VJP)

    Vertical jump performance (VJP) was assessed performing three maximal counter mouvemet jumps (CMJs) with a 30-second pause between the three jumps on the Just Jump system (Probotics Inc, Huntsville, AL, USA). The highest jump was recorded.

    Measured: 72 hours

  4. Project A: Peak Power Output (PPO)

    Peak power output (PPO) was assessed performing three maximal counter movement jumps (CMJs) on the Just Jump system (Probotics Inc, Huntsville, AL, USA) with a 30-second pause between the three jumps. PPO (presented in watts) was calculated.

    Measured: 72 hours

  5. Project B: Maximum Voluntary Contraction (MVC)

    The isometric MVC of the right quadriceps femoris muscle was determined using a custom-made (Cor 1-V1.0) ergometer chair for biomechanical measurements (OT Bioelettronica, Torino, Italy). The maximum force of the knee extensors was determined with a force meter operating linearly in the range of 0-1000 N.

    Measured: Baseline

  6. Project B: Time to Exhaustion During a 60% Isometric MVC

    After the thermotherapy, the participants immediately had to maintain an isometric contraction at 60% of their individual isometric MVC as long as possible until the force value decreased below 90% of the 60% target. Participants were able to follow their performance as the individual 60% isometric MVC mark and the corresponding 90% mark were displayed on a monitor. Time to exhaustion during this test was automatically measured and used as the submaximal contraction time.

    Measured: Immediately post-intervention

  7. Project B: Central Fatigue Assessed by Fractal Dimension (FD) of sEMG Signal

    Central- and peripheral fatigue can be described as changes in fractal dimension (FD) and muscle fiber conduction velocity (CV) detected by surface electromyography. The myoelectrical signals were detected from the vastus medialis (VM) and vastus lateralis (VL) from semidisposable, bidimensional arrays of 16 electrodes (3 mm diameter, 2×8 grid, 10 mm interelectrode distance, OT Bioelettronica, Torino, Italy) during 60% of isometric MVC. Linear regressions were used to calculate the initial value and the rate of change (calculated as the percentage ratio between the change of EMG estimate in one second and the initial value, expressed as %/s) of the EMG variables.

    Measured: Immediately post-intervention

  8. Project B: Peripheral Fatigue Assessed by Muscle Fiber Conduction Velocity of sEMG Signal

    Central- and peripheral fatigue can be described as changes in fractal dimension (FD) and muscle fiber conduction velocity (CV) detected by surface electromyography (sEMG) signals. The myoelectrical signals were detected from the vastus medialis (VM) and vastus lateralis (VL) from semidisposable, bidimensional arrays of 16 electrodes (3 mm diameter, 2×8 grid, 10 mm interelectrode distance, OT Bioelettronica, Torino, Italy) during 60% of isometric MVC. Linear regressions were used to calculate the initial value and the rate of change (calculated as the percentage ratio between the change of EMG estimate in one second and the initial value, expressed as %/s) of the EMG variables.

    Measured: Immediatly post-intervention

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Jul 2015 (estimated)
  2. Study startMay 2015
  3. Primary completionNov 2018
  4. Study completionMay 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
22 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02506283
Sponsor's protocol ID
KEK-ZH-Nr.2015-0113
Acronym
Cryotherapy
Status last verified
Jul 2026
First submitted
27 May 2015
Last updated
22 Oct 2026
Data monitoring committee
Yes

Publications

  • Ascensao A, Leite M, Rebelo AN, Magalhaes S, Magalhaes J. Effects of cold water immersion on the recovery of physical performance and muscle damage following a one-off soccer match. J Sports Sci. 2011 Feb;29(3):217-25. doi: 10.1080/02640414.2010.526132.

    PubMed 21170794
  • Banfi G, Lombardi G, Colombini A, Melegati G. Whole-body cryotherapy in athletes. Sports Med. 2010 Jun 1;40(6):509-17. doi: 10.2165/11531940-000000000-00000.

    PubMed 20524715
  • Barnett A. Using recovery modalities between training sessions in elite athletes: does it help? Sports Med. 2006;36(9):781-96. doi: 10.2165/00007256-200636090-00005.

    PubMed 16937953
  • Bleakley C, McDonough S, Gardner E, Baxter GD, Hopkins JT, Davison GW. Cold-water immersion (cryotherapy) for preventing and treating muscle soreness after exercise. Cochrane Database Syst Rev. 2012 Feb 15;2012(2):CD008262. doi: 10.1002/14651858.CD008262.pub2.

    PubMed 22336838
  • Pointon M, Duffield R, Cannon J, Marino FE. Cold application for neuromuscular recovery following intense lower-body exercise. Eur J Appl Physiol. 2011 Dec;111(12):2977-86. doi: 10.1007/s00421-011-1924-1. Epub 2011 Mar 29.

    PubMed 21445604
  • Wegmann M, Faude O, Poppendieck W, Hecksteden A, Frohlich M, Meyer T. Pre-cooling and sports performance: a meta-analytical review. Sports Med. 2012 Jul 1;42(7):545-64. doi: 10.2165/11630550-000000000-00000.

    PubMed 22642829
  • White GE, Wells GD. Cold-water immersion and other forms of cryotherapy: physiological changes potentially affecting recovery from high-intensity exercise. Extrem Physiol Med. 2013 Sep 1;2(1):26. doi: 10.1186/2046-7648-2-26.

    PubMed 24004719
  • Ross ML, Garvican LA, Jeacocke NA, Laursen PB, Abbiss CR, Martin DT, Burke LM. Novel precooling strategy enhances time trial cycling in the heat. Med Sci Sports Exerc. 2011 Jan;43(1):123-33. doi: 10.1249/MSS.0b013e3181e93210.

    PubMed 20508537
  • Hohenauer E, Clarys P, Baeyens JP, Clijsen R. The effect of local cryotherapy on subjective and objective recovery characteristics following an exhaustive jump protocol. Open Access J Sports Med. 2016 Aug 22;7:89-97. doi: 10.2147/OAJSM.S110991. eCollection 2016.

    PubMed 27579000
  • Hohenauer E, Cescon C, Deliens T, Clarys P, Clijsen R. The effect of local skin cooling before a sustained, submaximal isometric contraction on fatigue and isometric quadriceps femoris performance: A randomized controlled trial. J Therm Biol. 2017 Apr;65:88-94. doi: 10.1016/j.jtherbio.2017.02.017. Epub 2017 Feb 27.

    PubMed 28343582

Questions about this trial

What is this clinical trial studying?

A study testing Zamar Therapy CT clinic in people with Healthy, run by University of Applied Sciences and Arts of Southern Switzerland at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 22 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 20 Oct 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Project A: Delayed-onset Muscle Soreness (DOMS) (time frame: 72 hours). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02506283, which also lists 10 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Oct 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in