Sedentary LifestyleSITNCT07596836
Sprint Interval Training in Young Sedentary Adults
A study testing Sprint Interval Training in people with Sedentary Lifestyle and Cardiorespiratory Fitness, run by Sezer Taştan at 1 site in Turkey (Türkiye).
Trial summary
This randomized controlled trial evaluated the effects of a 6-week supervised sprint interval training program on cardiorespiratory fitness in healthy sedentary young adults. Forty participants aged 20 to 25 years were randomly assigned to either a sprint interval training group or a control group. Read more about this study
- Who is it for?
- Ages 20 to 25 yearsHealthy volunteers can take part
- Conditions the study is for
- Sedentary Lifestyle, Cardiorespiratory Fitness
- What is being tested?
- Sprint Interval Training
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 11 Mar 2026to 22 Apr 2026
- 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 20 to 25 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Aged 20-25 years
- Healthy sedentary adult
- Engaging in less than 150 minutes/week of moderate-to-vigorous physical activity
- IPAQ score below 600 MET-min/week or not participating in a regular exercise program
- Willing to provide written informed consent
Who cannot join
- History of cardiovascular, pulmonary, or metabolic disease, such as hypertension or diabetes
- Musculoskeletal injury or orthopedic condition preventing exercise participation
- Pregnancy or breastfeeding
- Smoking
- Regular medication use
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of Sprint Interval Training on Cardiovascular Capacity and VO2max in Young Sedentary Adults: A Randomized Controlled Trial
This randomized controlled trial evaluated the effects of a 6-week supervised sprint interval training program on cardiorespiratory fitness in healthy sedentary young adults. Forty participants aged 20 to 25 years were randomly assigned to either a sprint interval training group or a control group. The sprint interval training group completed supervised cycle-ergometer sessions three times per week for 6 weeks, while the control group maintained their usual sedentary routine. The primary outcome was maximal oxygen uptake (VO2max). Secondary outcomes included resting heart rate and 6-minute walk test distance. The study aimed to determine whether a short-term, time-efficient sprint interval training program could improve cardiovascular capacity and functional exercise performance in sedentary young adults.
Read the detailed description
This study was designed as a randomized controlled pre-test and post-test intervention study. Healthy sedentary adults aged 20 to 25 years were enrolled after ethics approval and written informed consent. Participants were randomly allocated in a 1:1 ratio to either a supervised sprint interval training group or a control group.
The sprint interval training group performed supervised exercise sessions on a cycle ergometer three times per week for 6 weeks. Each session included a 5-minute warm-up, followed by repeated 30-second all-out sprint bouts with active recovery periods. The number of sprint repetitions was progressively increased during the intervention period. The control group maintained their usual sedentary lifestyle and did not receive an additional exercise program.
Outcome measurements were performed before and after the intervention. The primary outcome was VO2max, assessed using a maximal exercise test on a cycle ergometer with respiratory gas analysis. Secondary outcomes were resting heart rate and 6-minute walk test distance. Adherence and adverse events were monitored throughout the study period.
- Conditions
- Sedentary Lifestyle, Cardiorespiratory Fitness
- Being tested
- Sprint Interval Training
- Keywords
- Sprint interval training, VO2max, Cardiorespiratory fitness, Resting heart ratev, 6-minute walk test, Sedentary adults, Young adults, Randomized controlled trial
- Medical subject headings
- Sedentary Behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Sprint Interval TrainingBehavioural
Also called SIT
The sprint interval training intervention consisted of supervised cycle-ergometer sessions performed three times per week for 6 weeks. Each session included a 5-minute warm-up at 50% VO2max, followed by 4 to 6 repetitions of 30-second all-out sprint bouts on a Monark 894E cycle ergometer, with 4-minute active recovery periods between sprints. The number of sprint repetitions was progressively increased from 4 repetitions in the first two weeks to 6 repetitions in the following four weeks.
| Study group | Role | What they receive |
|---|---|---|
| Sprint Interval Training Group | Experimental | Participants in this group completed supervised sprint interval training sessions on a cycle ergometer three times per week for 6 weeks. Receives: Behavioral: Sprint Interval Training |
| Control Group | No intervention | Participants in this group maintained their usual sedentary routine and did not receive an additional exercise program during the study period. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Maximal Oxygen Uptake (VO2max)
VO2max was assessed using a maximal exercise test on a cycle ergometer with breath-by-breath respiratory gas analysis. VO2max values were recorded in ml/kg/min before and after the 6-week intervention.
Measured: Baseline and 6 weeks
Secondary outcomes (2)
Change in Resting Heart Rate
Resting heart rate was measured in the morning after 10 minutes of seated rest using a heart rate monitor. Values were recorded in beats per minute before and after the 6-week intervention.
Measured: Baseline and 6 weeks
Change in 6-Minute Walk Test Distance
Functional exercise capacity was assessed using the 6-minute walk test. The total distance covered in 6 minutes was recorded in meters before and after the 6-week intervention.
Measured: Baseline and 6 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 May 2026
- Study start11 Mar 2026
- Primary completion22 Apr 2026
- Study completion22 Apr 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sedentary LifestyleStudies 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
- Model description
- Participants were randomly assigned in a 1:1 ratio to either a supervised sprint interval training group or a control group.
- Masking
- None (open label)
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sezer Taştan
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Sezer Taştan, Ankara Demirspor Kulubu
- Investigators
- Sezer Taştan, phD, Principal investigator, Ankara Demirspor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07596836
- Sponsor's protocol ID
- ST-SIT-VO2MAX-2026
- Acronym
- SIT
- Status last verified
- May 2026
- First submitted
- 13 May 2026
- Last updated
- 22 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Sprint Interval Training on Cardiovascular Capacity and VO2max in Young Sedentary Adults: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07596836
- Acronym / sponsor ID
- SIT / ST-SIT-VO2MAX-2026
- Conditions
- Sedentary Lifestyle, Cardiorespiratory Fitness
- Keywords
- Sprint interval training, VO2max, Cardiorespiratory fitness, Resting heart ratev, 6-minute walk test, Sedentary adults, Young adults, Randomized controlled trial
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Sezer TaştanUniversity, hospital or other
- Study start
- 11 Mar 2026 (actual)
- Primary completion
- 22 Apr 2026 (actual)
- Study completion
- 22 Apr 2026 (actual)
- First posted
- 19 May 2026 (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.
This randomized controlled trial evaluated the effects of a 6-week supervised sprint interval training program on cardiorespiratory fitness in healthy sedentary young adults. Forty participants aged 20 to 25 years were randomly assigned to either a sprint interval training group or a control group. The sprint interval training group completed supervised cycle-ergometer sessions three times per week for 6 weeks, while the control group maintained their usual sedentary routine. The primary outcome was maximal oxygen uptake (VO2max). Secondary outcomes included resting heart rate and 6-minute walk test distance. The study aimed to determine whether a short-term, time-efficient sprint interval training program could improve cardiovascular capacity and functional exercise performance in sedentary young adults.
Detailed description
This study was designed as a randomized controlled pre-test and post-test intervention study. Healthy sedentary adults aged 20 to 25 years were enrolled after ethics approval and written informed consent. Participants were randomly allocated in a 1:1 ratio to either a supervised sprint interval training group or a control group.
The sprint interval training group performed supervised exercise sessions on a cycle ergometer three times per week for 6 weeks. Each session included a 5-minute warm-up, followed by repeated 30-second all-out sprint bouts with active recovery periods. The number of sprint repetitions was progressively increased during the intervention period. The control group maintained their usual sedentary lifestyle and did not receive an additional exercise program.
Outcome measurements were performed before and after the intervention. The primary outcome was VO2max, assessed using a maximal exercise test on a cycle ergometer with respiratory gas analysis. Secondary outcomes were resting heart rate and 6-minute walk test distance. Adherence and adverse events were monitored throughout the study period.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Participants were randomly assigned in a 1:1 ratio to either a supervised sprint interval training group or a control group.
| Arm | Type | Receives |
|---|---|---|
| Sprint Interval Training Group | Experimental | Behavioral: Sprint Interval TrainingParticipants in this group completed supervised sprint interval training sessions on a cycle ergometer three times per week for 6 weeks. |
| Control Group | No intervention | –Participants in this group maintained their usual sedentary routine and did not receive an additional exercise program during the study period. |
Who may qualify
- Ages
- 20 to 25 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (5 listed)
- Aged 20-25 years
- Healthy sedentary adult
- Engaging in less than 150 minutes/week of moderate-to-vigorous physical activity
- IPAQ score below 600 MET-min/week or not participating in a regular exercise program
- Willing to provide written informed consent
Key exclusion criteria (5 listed)
- History of cardiovascular, pulmonary, or metabolic disease, such as hypertension or diabetes
- Musculoskeletal injury or orthopedic condition preventing exercise participation
- Pregnancy or breastfeeding
- Smoking
- Regular medication use
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 |
|---|---|---|
| Sprint Interval TrainingAlso: SITThe sprint interval training intervention consisted of supervised cycle-ergometer sessions performed three times per week for 6 weeks. Each session included a 5-minute warm-up at 50% VO2max, followed by 4 to 6 repetitions of 30-second all-out sprint bouts on a Monark 894E cycle ergometer, with 4-minute active recovery periods between sprints. The number of sprint repetitions was progressively increased from 4 repetitions in the first two weeks to 6 repetitions in the following four weeks. | Behavioural | Sprint Interval Training Group |
Primary outcome
Change in Maximal Oxygen Uptake (VO2max)
Time frame: Baseline and 6 weeks
VO2max was assessed using a maximal exercise test on a cycle ergometer with breath-by-breath respiratory gas analysis. VO2max values were recorded in ml/kg/min before and after the 6-week intervention.
2 secondary outcomes
Change in Resting Heart Rate
Time frame: Baseline and 6 weeks
Change in 6-Minute Walk Test Distance
Time frame: Baseline and 6 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 22 May 2026.
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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.
Sezer Taştan, phD principal investigator
Ankara Demirspor
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Sprint Interval Training in people with Sedentary Lifestyle and Cardiorespiratory Fitness, run by Sezer Taştan at 1 site in Turkey (Türkiye).
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 5 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 May 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 Turkey (Türkiye). 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 Maximal Oxygen Uptake (VO2max) (time frame: Baseline and 6 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 22 May 2026.