Sports PerformanceNCT04075929
Short or Long High Intensity Training
A study testing Training effects on aerobic output in people with Sports Performance and Cycling, run by University of Agder at 1 site in Norway.
Trial summary
To compare the effects of short and long high intensity interval training (HIT) conducted with the same total accumulated duration on physiological- and performance parameters during a 4-week training period. Read more about this study
- Who is it for?
- Ages 18 to 40 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Sports Performance, Cycling, Well-trained Athletes
- What is being tested?
- Training effects on aerobic output
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- 1 siteNorway
- Study dates
- 1 Nov 2017to 20 Dec 2017
- 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
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- male < 40 years,
- peak oxygen uptake (VO2peak) > 55 ml.kg-1.min-1,
- training volume >3 sessions per week (within cycling)
- absence of disease and injuries.
Who cannot join
- disease/injuries
- frequent absence of HIT sessions during the period.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Aerobic Short or Long High Intensity Interval Training - Does it Matter
To compare the effects of short and long high intensity interval training (HIT) conducted with the same total accumulated duration on physiological- and performance parameters during a 4-week training period.
Read the detailed description
Studies among elite athletes have documented the importance of large amounts of training volume in order to perform at a high level in endurance sports. It is also well documented that both low intensity training (LIT), moderate intensity training (MIT) and high intensity training (HIT) should be included in the overall training efforts. It is well documented that HIT has a positive effect on the aerobic endurance among both elite athletes and recreational athletes.
Despite the fact that there is general agreement that HIT is an important part of the overall training, it is unclear how this part of the training should be organized in order to optimize the training effects. The adaptions of endurance performance seem to depend on both the intensity and the accumulated duration of the HIT sessions. Therefore, the aim of this study was to compare the effects of SI and LI training, including equal accumulated HIT duration, during a 4-week intervention period, conducted as 4x8-min with 2-min recovery periods, 4x(12x40/20-sec) with 2-min recovery periods and 4x(8x40/20-sec) with 2-min recovery periods, in different physiological- and performance parameters among well-trained cyclists.
- Conditions
- Sports Performance, Cycling, Well-trained Athletes
- Being tested
- Training effects on aerobic output
- Keywords
- Cycling, endurance performance, intermittent exercise, maximal oxygen consumption, physiological adaptions, well-trained athletes
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Training effects on aerobic outputOther
The cyclists were allowed to perform ad libitum low intensity (LIT) in addition to high intensity (HIT) sessions that were determined to each group. The cyclists completed 12 supervised HIT sessions during the intervention period, three HIT sessions per week with at least 48 hours between each HIT-session. All HIT sessions were performed as supervised group training sessions. Each HIT session started with an individual 30 minutes' warm up at low intensity (55-70% HRmax) interspersed by freely chosen progressive sprints. For all groups the power output during the recovery periods was 50 % of the power output used during work intervals. The cyclists in all groups were instructed to perform each interval session at their maximal sustainable intensity. Each session ended with 15-20 minutes' cool down (55-70% HRmax). All HIT sessions were supervised and performed in groups on the University of Agder's (UiA) premises at Spicheren fitness center in Kristiansand.
| Study group | Role | What they receive |
|---|---|---|
| 4x8 min | Other | 4x8-min intervals with 2-min recovery periods. The same accumulated duration of these three interval groups means that the total interval time is the same for each group: 4x8-min = 32 min Receives: Other: Training effects on aerobic output |
| 4x(8x40/20s) | Other | 4x(12x40/20-sec) intervals with 2-min recovery periods The same accumulated duration of these three interval groups means that the total interval time is the same for each group:4x(12x40/20-sec) = 32 min if the 20-sec recovery is not included in the total time of HIT Receives: Other: Training effects on aerobic output |
| 4x(12x40/20s) | Other | 4x(8x40/20-sec) intervals with 2-min recovery periods The same accumulated duration of these three interval groups means that the total interval time is the same for each group: 4x(8x40/20-sec) = 32 min if the 20-sec recovery is included in the total time of HIT Receives: Other: Training effects on aerobic output |
What is being measured
The primary outcome is the main question the study is designed to answer.
Maximal oxygen uptake
VO2max
Measured: 4 weeks
Secondary outcomes (2)
Functional threshold power
FTP
Measured: 4 weeks
Peak power output
PPO
Measured: 4 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Sep 2019
- Study start1 Nov 2017
- Primary completion15 Dec 2017
- Study completion20 Dec 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sports PerformanceStudies 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
- Single blind
- Who is masked
- Participant
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Agder
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Monica Klungland Torstveit, University of Agder
- Investigators
- Monica K. Torstveit, Professor, Principal investigator, Universitetet i Agder
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04075929
- Sponsor's protocol ID
- Aerobic short og long interval
- Status last verified
- Aug 2019
- First submitted
- 29 Aug 2019
- Last updated
- 3 Sep 2019
- 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 3 Sep 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Aerobic Short or Long High Intensity Interval Training - Does it Matter
- ClinicalTrials.gov ID
- NCT04075929
- Acronym / sponsor ID
- Aerobic short og long interval
- Conditions
- Sports Performance, Cycling, Well-trained Athletes
- Keywords
- Cycling, endurance performance, intermittent exercise, maximal oxygen consumption, physiological adaptions, well-trained athletes
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- University of AgderUniversity, hospital or other
- Study start
- 1 Nov 2017 (actual)
- Primary completion
- 15 Dec 2017 (actual)
- Study completion
- 20 Dec 2017 (actual)
- First posted
- 3 Sep 2019 (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.
To compare the effects of short and long high intensity interval training (HIT) conducted with the same total accumulated duration on physiological- and performance parameters during a 4-week training period.
Detailed description
Studies among elite athletes have documented the importance of large amounts of training volume in order to perform at a high level in endurance sports. It is also well documented that both low intensity training (LIT), moderate intensity training (MIT) and high intensity training (HIT) should be included in the overall training efforts. It is well documented that HIT has a positive effect on the aerobic endurance among both elite athletes and recreational athletes.
Despite the fact that there is general agreement that HIT is an important part of the overall training, it is unclear how this part of the training should be organized in order to optimize the training effects. The adaptions of endurance performance seem to depend on both the intensity and the accumulated duration of the HIT sessions. Therefore, the aim of this study was to compare the effects of SI and LI training, including equal accumulated HIT duration, during a 4-week intervention period, conducted as 4x8-min with 2-min recovery periods, 4x(12x40/20-sec) with 2-min recovery periods and 4x(8x40/20-sec) with 2-min recovery periods, in different physiological- and performance parameters among well-trained cyclists.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| 4x8 min | Other | Other: Training effects on aerobic output4x8-min intervals with 2-min recovery periods. The same accumulated duration of these three interval groups means that the total interval time is the same for each group: 4x8-min = 32 min |
| 4x(8x40/20s) | Other | Other: Training effects on aerobic output4x(12x40/20-sec) intervals with 2-min recovery periods The same accumulated duration of these three interval groups means that the total interval time is the same for each group:4x(12x40/20-sec) = 32 min if the 20-sec recovery is not included in the total time of HIT |
| 4x(12x40/20s) | Other | Other: Training effects on aerobic output4x(8x40/20-sec) intervals with 2-min recovery periods The same accumulated duration of these three interval groups means that the total interval time is the same for each group: 4x(8x40/20-sec) = 32 min if the 20-sec recovery is included in the total time of HIT |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- male < 40 years,
- peak oxygen uptake (VO2peak) > 55 ml.kg-1.min-1,
- training volume >3 sessions per week (within cycling)
- absence of disease and injuries.
Key exclusion criteria (2 listed)
- disease/injuries
- frequent absence of HIT sessions during the period.
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 |
|---|---|---|
| Training effects on aerobic outputThe cyclists were allowed to perform ad libitum low intensity (LIT) in addition to high intensity (HIT) sessions that were determined to each group. The cyclists completed 12 supervised HIT sessions during the intervention period, three HIT sessions per week with at least 48 hours between each HIT-session. All HIT sessions were performed as supervised group training sessions. Each HIT session started with an individual 30 minutes' warm up at low intensity (55-70% HRmax) interspersed by freely chosen progressive sprints. For all groups the power output during the recovery periods was 50 % of the power output used during work intervals. The cyclists in all groups were instructed to perform each interval session at their maximal sustainable intensity. Each session ended with 15-20 minutes' cool down (55-70% HRmax). All HIT sessions were supervised and performed in groups on the University of Agder's (UiA) premises at Spicheren fitness center in Kristiansand. | Other | 4x(12x40/20s), 4x(8x40/20s), 4x8 min |
Primary outcome
Maximal oxygen uptake
Time frame: 4 weeks
VO2max
2 secondary outcomes
Functional threshold power
Time frame: 4 weeks
Peak power output
Time frame: 4 weeks
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 3 Sep 2019.
- Individual participant dataSharing planned: No
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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.
Monica K. Torstveit, Professor principal investigator
Universitetet i Agder
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Training effects on aerobic output in people with Sports Performance and Cycling, run by University of Agder at 1 site in Norway.
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 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 3 Sep 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 Norway. 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?
Maximal oxygen uptake (time frame: 4 weeks). 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 3 Sep 2019.