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Young AdultsNCT07752901

High-Intensity Interval Resistance Training and Low-to-Moderate-Intensity Resistance Training in Upper Extremity Muscles

A study testing High-Intensity Interval Resistance Training (HIIRT) and Low-to-Moderate-Intensity Resistance Training (LMRT) in people with Young Adults, run by Hacettepe University at 1 site in Turkey (Türkiye).

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

High-intensity interval resistance training (HIIRT) has emerged as a time-efficient alternative to conventional resistance training; however, evidence regarding upper-extremity-focused HIIRT and its multidimensional effects remains limited. Read more about this study

Who is it for?
Ages 18 to 25 yearsHealthy volunteers can take part
Conditions the study is for
Young Adults
What is being tested?
High-Intensity Interval Resistance Training (HIIRT) and Low-to-Moderate-Intensity Resistance Training (LMRT)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
49 participants
Where
1 siteTurkey (Türkiye)
Study dates
18 May 2026to 28 Jul 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 18 to 25 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy young adults aged 18 to 25 years.
  • Ability to understand the study procedures and provide written informed consent. Ability to participate safely in an upper-extremity resistance training program. Willingness to attend supervised exercise sessions twice weekly for 8 weeks.
  • No participation in another clinical trial during the study period.

Who cannot join

  • Presence of cardiovascular disease.
  • Presence of neurological disease.
  • Presence of psychiatric disorder.
  • Presence of orthopedic disease or musculoskeletal condition limiting exercise participation.
  • Presence of any systemic disease that may interfere with exercise training or study assessments.
  • History of surgery affecting participation in the exercise program.
Show all 9Show fewer
  • Cognitive or psychological conditions that could interfere with completion of the assessments.
  • Inability or unwillingness to comply with the study protocol.
  • Refusal to provide written informed consent.

Trial locations and contacts

1 site in 1 country.

Turkey (Türkiye)1 site
  • Munzur University Faculty of Health Sciences

    Tunceli

Other trials in Turkey (Türkiye)

About this study

Official title: Comparison of the Effects of High-Intensity Interval Resistance Training and Low-to-Moderate-Intensity Resistance Training in Upper Extremity Muscles on Muscle Strength, Functional Capacity, Cognition, and Mental Health in Young Adults: A Randomized Controlled Trial

High-intensity interval resistance training (HIIRT) has emerged as a time-efficient alternative to conventional resistance training; however, evidence regarding upper-extremity-focused HIIRT and its multidimensional effects remains limited. This randomized controlled trial aims to compare the effects of upper-extremity HIIRT and low-to-moderate-intensity resistance training (LMRT) on muscle strength, functional capacity, cognition, mental health, and health-related quality of life in healthy young adults.

Forty-nine healthy young adults aged 18-25 years will be randomly allocated to one of three groups: HIIRT, LMRT, or a control group. Participants in the intervention groups will complete supervised upper-extremity resistance training sessions twice weekly for 8 weeks, while the control group will receive no structured exercise intervention.

Outcome measures will include isotonic upper-extremity muscle strength, the Six-Minute Walk Test, the Montreal Cognitive Assessment, the State-Trait Anxiety Inventory, the Generalized Anxiety Disorder-7 questionnaire, the Dispositional Flow Scale-2, and the Short Form-36 Health Survey. The study is designed to evaluate the effects of the two resistance training protocols on physical, cognitive, and psychological outcomes in healthy young adults.

Read the detailed description

Resistance training is widely recognized as an effective intervention for improving muscle strength, functional performance, and overall health. In recent years, high-intensity interval resistance training (HIIRT) has emerged as a time-efficient alternative to conventional resistance training because it combines high-load resistance exercises with brief recovery intervals. Although previous studies have demonstrated the effectiveness of HIIRT for improving muscular performance, evidence regarding upper-extremity-focused HIIRT and its effects on cognitive function, mental health, and health-related quality of life remains limited.

The purpose of this randomized controlled trial is to compare the effects of an 8-week upper-extremity high-intensity interval resistance training (HIIRT) program with those of a conventional low-to-moderate-intensity resistance training (LMRT) program in healthy young adults.

A total of 49 healthy participants aged 18-25 years will be randomly allocated to one of three groups: (1) HIIRT, (2) LMRT, or (3) a control group. Randomization will be performed using age- and sex-stratified block randomization. Participants in both exercise groups will complete supervised training sessions twice weekly for eight consecutive weeks, whereas the control group will receive no structured exercise intervention and will be instructed to maintain their usual lifestyle.

The HIIRT protocol will consist of upper-extremity exercises performed at 80% of one-repetition maximum (1RM) using a cluster-set format with short recovery intervals. The LMRT protocol will include the same exercises performed at 30-70% of 1RM using conventional resistance training principles. Both interventions will include exercises targeting the biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row.

Outcome assessments will be performed before and after the 8-week intervention. Primary outcomes include upper-extremity isotonic muscle strength and functional capacity assessed by the Six-Minute Walk Test. Secondary outcomes include cognitive function assessed by the Montreal Cognitive Assessment, anxiety assessed by the State-Trait Anxiety Inventory and the Generalized Anxiety Disorder-7 questionnaire, flow state assessed by the Dispositional Flow Scale-2, and health-related quality of life assessed by the Short Form-36 Health Survey.

Conditions
Young Adults
Being tested
High-Intensity Interval Resistance Training (HIIRT), Low-to-Moderate-Intensity Resistance Training (LMRT)
Keywords
high intensity resistance training, resistance training, upper extremity, muscle strength, functional capacity, cognition

What participants receive

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

  • High-Intensity Interval Resistance Training (HIIRT)Other

    Participants performed supervised upper-extremity high-intensity interval resistance training twice weekly for 8 weeks using a multi-station resistance machine. Exercises included biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row. Training intensity was set at 80% of one-repetition maximum (1RM). The protocol consisted of two sets, each including one cluster of six repetitions followed by two clusters of 2-3 repetitions separated by 20-second rest intervals, with 2 minutes and 30 seconds of rest between sets. Each session included a 5-minute warm-up and a 5-minute cool-down.

  • Low-to-Moderate-Intensity Resistance Training (LMRT)Other

    Participants performed supervised upper-extremity low-to-moderate-intensity resistance training twice weekly for 8 weeks using a multi-station resistance machine. Exercises included biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row. Exercise intensity was prescribed at 30-70% of one-repetition maximum (1RM), with 2-3 sets of 8-12 repetitions and at least 1 minute of rest between sets. Each training session included a 5-minute warm-up and a 5-minute cool-down.

Study groups in NCT07752901
Study groupRoleWhat they receive
High-Intensity Interval Resistance Training (HIIRT)ExperimentalParticipants will perform supervised upper-extremity high-intensity interval resistance training twice weekly for 8 weeks. Exercises include biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row using a multi-station resistance machine. Training will be performed at 80% of one-repetition maximum (1RM) using a cluster-set protocol consisting of two sets, each including one cluster of six repetitions followed by two clusters of 2-3 repetitions separated by 20-second rest intervals, with 2 minutes and 30 seconds of rest between sets. Each session includes a 5-minute warm-up and 5-minute cool-down.
Receives: Other: High-Intensity Interval Resistance Training (HIIRT)
Low-to-Moderate-Intensity Resistance Training (LMRT)ExperimentalParticipants will perform supervised upper-extremity low-to-moderate-intensity resistance training twice weekly for 8 weeks. Exercises include biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row using a multi-station resistance machine. Training intensity will be 30-70% of one-repetition maximum (1RM), consisting of 2-3 sets of 8-12 repetitions with at least 1 minute of rest between sets. Each training session includes a 5-minute warm-up and 5-minute cool-down.
Receives: Other: Low-to-Moderate-Intensity Resistance Training (LMRT)
ControlNo interventionParticipants assigned to the control group will not receive a structured exercise program during the 8-week study period. They will be instructed to maintain their usual daily activities and will receive general recommendations regarding physical activity according to current guidelines (150-300 minutes of moderate-intensity or 75-150 minutes of vigorous-intensity physical activity per week, or an equivalent combination). Outcome assessments will be performed at baseline and after the 8-week follow-up period.

What is being measured

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

  1. Upper Extremity Muscle Strength

    Changes in isotonic upper-extremity muscle strength assessed using a multi-station resistance training machine. Strength will be measured for the biceps curl, lat pulldown, pec deck, machine shoulder press, and seated row exercises. The highest value from three trials for each exercise will be recorded.

    Measured: Baseline and Week 8

  2. Functional Capacity

    Changes in functional capacity assessed using the 6-Minute Walk Test (6MWT). Walking distance (meters) completed during the test will be recorded.

    Measured: Baseline and Week 8

Secondary outcomes (6)
  1. Cognitive Function

    Changes in cognitive performance assessed using the Montreal Cognitive Assessment (MoCA). Total scores range from 0 to 30, with higher scores indicating better cognitive function.

    Measured: Baseline and Week 8

  2. State Anxiety

    Changes in state anxiety assessed using the State-Trait Anxiety Inventory-State (STAI-State). Scores range from 20 to 80, with higher scores indicating greater anxiety.

    Measured: Baseline and Week 8

  3. Trait Anxiety

    Changes in trait anxiety assessed using the State-Trait Anxiety Inventory-Trait (STAI-Trait). Scores range from 20 to 80, with higher scores indicating greater anxiety.

    Measured: Baseline and Week 8

  4. Generalized Anxiety Symptoms

    Changes in anxiety symptoms assessed using the Generalized Anxiety Disorder-7 (GAD-7). Total scores range from 0 to 21, with higher scores indicating more severe anxiety symptoms.

    Measured: Baseline and Week 8

  5. Flow State

    Changes in dispositional flow assessed using the Dispositional Flow Scale-2 (DFS-2). The Dispositional Flow Scale-2 consists of 36 items, with total scores ranging from 36 to 180. Higher scores indicate a greater tendency to experience flow during activities (better outcome), whereas lower scores indicate a lower tendency to experience flow (worse outcome).

    Measured: Baseline and Week 8

  6. Health-Related Quality of Life

    Changes in health-related quality of life assessed using the Short Form-36 Health Survey (SF-36). The SF-36 consists of eight domains, each scored from 0 to 100, with higher scores indicating better health-related quality of life (better outcome) and lower scores indicating poorer health-related quality of life (worse outcome).

    Measured: Baseline and Week 8

Timeline

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

  1. First posted7 Aug 2026
  2. Study start18 May 2026
  3. Primary completion21 Jul 2026
  4. Study completion28 Jul 2026

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
Single blind
Who is masked
Participant
Enrolment
49 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07752901
Sponsor's protocol ID
2026/7-15
Status last verified
Aug 2026
First submitted
2 Aug 2026
Last updated
7 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Moro T, Tinsley G, Bianco A, Gottardi A, Gottardi GB, Faggian D, Plebani M, Marcolin G, Paoli A. High intensity interval resistance training (HIIRT) in older adults: Effects on body composition, strength, anabolic hormones and blood lipids. Exp Gerontol. 2017 Nov;98:91-98. doi: 10.1016/j.exger.2017.08.015. Epub 2017 Aug 15. No abstract available.

    PubMed 28821429

Questions about this trial

What is this clinical trial studying?

A study testing High-Intensity Interval Resistance Training (HIIRT) and Low-to-Moderate-Intensity Resistance Training (LMRT) in people with Young Adults, run by Hacettepe University 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 3 inclusion and 9 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 7 Aug 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?

Upper Extremity Muscle Strength (time frame: Baseline and Week 8). The study lists 2 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 NCT07752901, 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 7 Aug 2026.

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