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Exercise Training(HIIT)NCT04084535

Effects of High Intensity Interval Training (HIIT) vs. Inspiratory Muscle Training on the Recovery After a Maximal Apnea.

A study testing High intensity interval training and Inspiratory muscle training in people with Exercise Training and Respiratory Muscle Training, run by Centro Universitario La Salle at 1 site in Spain.

Completed

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

Official record
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Trial summary

The aim of this randomized cross-over controlled study was to assess the effects of an 4-week exercise program on the recovery capacity after a voluntary maximal apnea. Participants will be randomly allocated to receive either a high intensity interval training (HIIT), or an inspiratory muscle training (IMT) using an… Read more about this study

Who is it for?
Ages 18 to 60 yearsHealthy volunteers can take part
What is being tested?
High intensity interval training and Inspiratory muscle training
Could I receive a placebo?
No, everyone receives an active treatment
How many people
16 participants
Where
1 siteSpain
Study dates
16 Sep 2019to 2 Dec 2019
Phase
Interventional
Are there results?
None posted in the registry

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 60 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Absence of pain or illness
  • No changes in cognitive ability
  • Over 18 years old.
  • Member of the Spanish Federation of Underwater Activities.
  • Positive medical examination that allows the diver to practice voluntary apnea.

Who cannot join

  • People with systemic diseases, tumors, infections, pacemakers, history of epilepsy, hydrophobia, pregnancy women, pharmacological treatment.
  • To be participating in other physical activities during the experimental research

Trial locations and contacts

1 site in 1 country.

Spain1 site
  • Madrid FREEDIVERS association

    Madrid

Other trials in Spain

About this study

Official title: Effects of Inspiratory Muscle Training vs. High Intensity Interval Training Program on the Recovery Capacity After a Maximal Dynamic Apnea in Breath-hold Divers. A Randomized Crossover Trial

The aim of this randomized cross-over controlled study was to assess the effects of an 4-week exercise program on the recovery capacity after a voluntary maximal apnea. Participants will be randomly allocated to receive either a high intensity interval training (HIIT), or an inspiratory muscle training (IMT) using an inspiratory resistance device.

Read the detailed description

It is a multi-center study. 3 different Spanish Freedivers Centres are included in the study (Madrid, Zaragoza, and Barcelona).

For each participant, exercise program started with one or the other program. Hence, both interventions were applied once with the participant randomly allocated to receive the same intervention. The trial included four study visits. Each exercise training program will be applied sessions per week during 4 weeks. Participants received baseline assessments at the beginning of nay intervention, and post-intervention assessments at the end of the fourth week. The wash-out period will be two weeks. After these two weeks participants switched intervention.

Being tested
High intensity interval training, Inspiratory muscle training
Medical subject headings
Apnea

What participants receive

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

  • High intensity interval trainingOther

    Participants will perform 3 HIIT sessions per week, involving 10 min of intense exercise within a time commitment of 30 min per session, including warm-up, recovery between intervals and cool down.

  • Inspiratory muscle trainingOther

    Participants will perform 3 inspiratory resistance training sessions per week, involving 30 min per session, including warm-up, recovery between intervals

Study groups in NCT04084535
Study groupRoleWhat they receive
High intensity interval trainingActive comparatorIt will apply a HIIT program for 4 weeks, with 3 sessions per week of 30 min per session, including warm-up, recovery between intervals and return to calm.
Receives: Other: High intensity interval training
Inspiratory muscle trainingActive comparatorIt will apply an inspiratory muscle training for 4 weeks, with 3 sessions per week of 30 min per session, including warm-up, recovery between intervals and return to calm.
Receives: Other: Inspiratory muscle training

What is being measured

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

  1. Oxygen Saturation recovery

    Oxygen Saturation recovery will be record by the experimenters every 5 seconds by a handheld pulse-oximeter during the 1 min recovery time after a maximal dynamic apnea. The outcome represents the time it takes to get a 95% of saturation during these 1 minute.

    Measured: Before and after training intervention (after 4 weeks)

Secondary outcomes (4)
  1. Lung function (forced spirometry)

    The Spirometry will be perform according to American Thoracic Society criteria and was measured in litres. The maneuver will be perform 3 times and recording the best one.

    Measured: Before and after training intervention (after 4 weeks)

  2. Maximum Respiratory Pressures

    The maximum respiratory pressures (MIP and MEP) will be measure with a device. This device applies an inspiratory/expiratory load which provides a resistance. The maneuver will be perform in a sitting position. Measuring a minimum of 3 times will be perform, recording the highest value.

    Measured: Before and after training intervention (after 4 weeks)

  3. Lactic acid recovery

    The level of lactic acid in the blood will be measure by a device that used a blood lactic acid measurement that you've gotten by the finger-stick method. It will be record by the experimenters 3 times: immediately after the maximal dynamic apnea, after 3 min and after 10 min of the maximal dynamic apnea.

    Measured: Before and after training intervention (after 4 weeks)

  4. Heart Rate recovery

    Heart Rate will be record by the experimenters every 5 seconds by a handheld pulse-oximeter during the 1 min recovery time after a maximal dynamic apnea. The outcome represents how long does it take before the participant periodic Heart Rate is stabilized during these 1 minute.

    Measured: Before and after training intervention (after 4 weeks)

Timeline

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

  1. First posted10 Sep 2019
  2. Study start16 Sep 2019
  3. Primary completion16 Sep 2019
  4. Study completion2 Dec 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
Crossover
Model description
Intervention Model: Crossover Assignment
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
16 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04084535
Sponsor's protocol ID
CSEULS - PI - 215/2018
Acronym
(HIIT)
Status last verified
Dec 2019
First submitted
6 Sep 2019
Last updated
6 Dec 2019
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Andersson JP, Liner MH, Runow E, Schagatay EK. Diving response and arterial oxygen saturation during apnea and exercise in breath-hold divers. J Appl Physiol (1985). 2002 Sep;93(3):882-6. doi: 10.1152/japplphysiol.00863.2001.

    PubMed 12183481

Questions about this trial

What is this clinical trial studying?

A study testing High intensity interval training and Inspiratory muscle training in people with Exercise Training and Respiratory Muscle Training, run by Centro Universitario La Salle at 1 site in Spain.

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 5 inclusion and 2 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 6 Dec 2019. 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 Spain. 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. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Oxygen Saturation recovery (time frame: Before and after training intervention (after 4 weeks)). 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 NCT04084535, which also lists 1 linked publication.

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 6 Dec 2019.

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