Exercise Performance of Fit AthletesNCT03155152
Decremental Exercise: a New Training Approach?
A study testing DECT and HIIT in people with Exercise Performance of Fit Athletes, run by Swiss Federal Institute of Technology at 1 site in Switzerland.
Trial summary
Different types of high-intensity interval training (HIIT) sessions are used by athletes in order to improve their physical performance, but innovative approaches to training are lacking. Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Exercise Performance of Fit Athletes
- What is being tested?
- DECT and HIIT
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 55 participants
- Where
- 1 siteSwitzerland
- Study dates
- 1 Jun 2017to 11 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 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Age: 18-40 years
- Healthy, i.e. normal physical and mental status (not taking any medication on a regular basis for more than a month, except contraceptive medication)
- Normal Body-Mass-Index (BMI): 18.5-24.9 kg·m-2
- Well-trained athletes: V̇O2max > 55.1 ml·min-1·kg-1 for men and > 50.1 ml·min-1·kg-1 for women
- Normal lung function
- Non-smoking
- Willing to adhere to the general study rules
Who cannot join
- Women who are pregnant or breast feeding
- Intention to become pregnant during the course of the study
- Known or suspected non-compliance, drug or alcohol abuse
- Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant
- Previous enrolment into the same part (A or B) of the current study
- Enrolment of the investigator, his/her family members, employees and other dependent persons
Show all 10Show fewer
- Acute or chronic illness
- Intake of medications affecting performance or the respiratory, cardiovascular or neuromuscular system
- Insufficient training history (<3 yrs of participation in competitive cycling/running) or training volume (<40 km running/week or 150 km cycling/week) in the previous 6 months
- Recent (<3 months) history of orthopaedic injury or participation in structured high-intensity training blocks
Trial locations and contacts
1 site in 1 country.
Switzerland1 site
Exercise Physiology Lab, Institute of Human Movement Sciences and Sport, ETH Zurich
Zurich, Canton of Zurich, 8057
About this study
Official title: Decremental Exercise Protocol as a Training Stimulus: More or Less Efficient Than Traditional High-intensity Interval Training?
Different types of high-intensity interval training (HIIT) sessions are used by athletes in order to improve their physical performance, but innovative approaches to training are lacking. Therefore, in Part A of this study the physiological response to a standard HIIT and a new decremental exercise training (DECT) will be compared in runners and cyclists. Next, in Part B the training effects of a 4-week block of the HIIT and DECT will be compared.
- Conditions
- Exercise Performance of Fit Athletes
- Being tested
- DECT, HIIT
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DECTOther
The DECT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is imposed in a decremental fashion.
HIITOther
The HIIT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is kept constant.
| Study group | Role | What they receive |
|---|---|---|
| DECT Group | Experimental | The DECT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is progressively decreased throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training Receives: Other: DECT |
| HIIT Group | Active comparator | The HIIT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is kept constant throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training Receives: Other: HIIT |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in exercise performance
Time taken to cover a fixed distance, in minutes
Measured: measured before and after the 4-week training block, during a time-trial (40 km cycling or 10 km running)
Secondary outcomes (2)
Change in maximal oxygen uptake
Measured in ml/kg/min
Measured: Measured during a maximal incremental exercise test before and after the 4-week training block
Average oxygen uptake
Average oxygen uptake measured during the four 4-min bouts of high-intensity exercise of a session of HIIT and DECT
Measured: The two training session are performed within one week
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 May 2017
- Study start1 Jun 2017
- Primary completion11 Dec 2019
- Study completion11 Dec 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Exercise Performance of Fit AthletesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 55 participants (actual)
Sponsor and investigators
- Lead sponsor
- Swiss Federal Institute of Technology
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Christina M Spengler, Prof., Principal investigator, ETH Zurich
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03155152
- Sponsor's protocol ID
- DECT_HIIT_2017
- Status last verified
- Feb 2019
- First submitted
- 12 May 2017
- Last updated
- 18 Mar 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 Mar 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Decremental Exercise Protocol as a Training Stimulus: More or Less Efficient Than Traditional High-intensity Interval Training?
- ClinicalTrials.gov ID
- NCT03155152
- Acronym / sponsor ID
- DECT_HIIT_2017
- Conditions
- Exercise Performance of Fit Athletes
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 55 participants (actual)
- Lead sponsor
- Swiss Federal Institute of TechnologyUniversity, hospital or other
- Study start
- 1 Jun 2017 (actual)
- Primary completion
- 11 Dec 2019 (actual)
- Study completion
- 11 Dec 2019 (actual)
- First posted
- 16 May 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Different types of high-intensity interval training (HIIT) sessions are used by athletes in order to improve their physical performance, but innovative approaches to training are lacking. Therefore, in Part A of this study the physiological response to a standard HIIT and a new decremental exercise training (DECT) will be compared in runners and cyclists. Next, in Part B the training effects of a 4-week block of the HIIT and DECT will be compared.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| DECT Group | Experimental | Other: DECTThe DECT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is progressively decreased throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training |
| HIIT Group | Active comparator | Other: HIITThe HIIT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is kept constant throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (7 listed)
- Age: 18-40 years
- Healthy, i.e. normal physical and mental status (not taking any medication on a regular basis for more than a month, except contraceptive medication)
- Normal Body-Mass-Index (BMI): 18.5-24.9 kg·m-2
- Well-trained athletes: V̇O2max > 55.1 ml·min-1·kg-1 for men and > 50.1 ml·min-1·kg-1 for women
- Normal lung function
Key exclusion criteria (10 listed)
- Women who are pregnant or breast feeding
- Intention to become pregnant during the course of the study
- Known or suspected non-compliance, drug or alcohol abuse
- Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant
- Previous enrolment into the same part (A or B) of the current study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DECTThe DECT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is imposed in a decremental fashion. | Other | DECT Group |
| HIITThe HIIT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is kept constant. | Other | HIIT Group |
Primary outcome
Change in exercise performance
Time frame: measured before and after the 4-week training block, during a time-trial (40 km cycling or 10 km running)
Time taken to cover a fixed distance, in minutes
2 secondary outcomes
Change in maximal oxygen uptake
Time frame: Measured during a maximal incremental exercise test before and after the 4-week training block
Average oxygen uptake
Time frame: The two training session are performed within one week
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Mar 2020.
- Individual participant dataSharing planned: No
Related trials for Exercise Performance of Fit Athletes
Recruiting
A Pilot Study to Evaluate the Ability of Lactoferrin to Modulate Iron Homeostasis and Exercise Performance in Exercising Females
Iron Deficiencies, Low Ferritin
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Christina M Spengler, Prof. principal investigator
ETH Zurich
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing DECT and HIIT in people with Exercise Performance of Fit Athletes, run by Swiss Federal Institute of Technology 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 7 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 18 Mar 2020. 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. 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?
Change in exercise performance (time frame: measured before and after the 4-week training block, during a time-trial (40 km cycling or 10 km running)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 18 Mar 2020.