SportNCT07619963
Isometric Core Training and Swimming Performance in Adolescent Amputee Swimmers
A study testing Isometric Core Training and Standard Swimming Training in people with Sport and Amputation, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
Trial summary
Adolescent amputee swimmers often experience challenges related to trunk stabilization, postural control, and efficient force transfer during swimming because of asymmetric biomechanics associated with limb loss. Read more about this study
- Who is it for?
- Ages 14 to 20 years
- Conditions the study is for
- Sport, Amputation, Paralympic Athletes
- What is being tested?
- Isometric Core Training and Standard Swimming Training
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Mar 2024to 1 Jun 2024
- 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 14 to 20 years
- All sexes
- No healthy volunteers
- Child, Adult
Who may be able to join
- Upper- or lower-limb amputation
- Participation in at least two consecutive Turkish National Para-swimming -Championships
- Active training with regular competitive participation
- Age between 14 and 20 years
- Ability to participate in regular swimming and exercise training
- Written informed consent obtained from participants and/or parents/guardians
Who cannot join
- Discontinuation of regular training or competitive participation
- Acute musculoskeletal injury or cardiovascular condition preventing maximal exercise participation
- Refusal or inability to participate in the study protocol
- Failure to complete the intervention or assessment procedures
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of a 12-Week Isometric Core Training Program on Trunk Endurance and 50-m Freestyle Performance in Adolescent Amputee Swimmers: A Randomized Controlled Trial
Adolescent amputee swimmers often experience challenges related to trunk stabilization, postural control, and efficient force transfer during swimming because of asymmetric biomechanics associated with limb loss. Core muscle training has been proposed as a potential dryland conditioning strategy to support swimming performance and trunk endurance in Para-swimmers; however, evidence from randomized controlled trials in adolescent amputee swimmers remains limited.
The purpose of this study is to investigate the effects of a 12-week supervised isometric core training program on trunk muscular endurance and 50-meter freestyle swimming performance in adolescent amputee swimmers. Participants will be randomly assigned to either an experimental group receiving additional isometric core training together with standard swimming training or a control group performing standard swimming training only.
Read more
Primary outcome measures will include 50-meter freestyle performance time. Secondary outcome measures will include trunk muscular endurance assessments such as the 20-second sit-up test, 20-second reverse sit-up test, supine bent-knee leg hold, and prone trunk-extension hold. Assessments will be performed before and after the 12-week intervention period.
The findings of this study may contribute to the development of evidence-based dryland conditioning programs for adolescent Para-swimmers with limb amputations.
- Conditions
- Sport, Amputation, Paralympic Athletes
- Being tested
- Isometric Core Training, Standard Swimming Training
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Isometric Core TrainingBehavioural
Participants assigned to the experimental group completed a supervised 12-week isometric core training program in addition to their regular swimming training. The intervention was performed three times per week and included individualized exercises targeting trunk stabilization, abdominal endurance, and lumbopelvic control. Exercises were adapted according to the athlete's level of upper- or lower-limb amputation and included front plank, side plank, trunk-extension holds, bridge exercises, Pallof press holds, and bird-dog/dead-bug variations. Training duration and resistance were progressively increased throughout the intervention period.
Standard Swimming TrainingOther
Participants assigned to the control group continued their regular swimming training program for 12 weeks without any additional dryland core training intervention. The swimming program consisted of routine in-water training sessions conducted at the Ankara Olympic Preparation Centre according to the standard preparation program for competitive Para-swimmers.
| Study group | Role | What they receive |
|---|---|---|
| Experimental Group | Experimental | Participants in the experimental group completed a 12-week supervised isometric core training program in addition to their regular swimming training. The intervention was performed three times per week and included individualized trunk stabilization and endurance exercises adapted to the athlete's level of amputation. Receives: Behavioral: Isometric Core Training |
| Control Group | Active comparator | Participants in the control group continued their regular swimming training program for 12 weeks without additional dryland core training. Receives: Other: Standard Swimming Training |
What is being measured
The primary outcome is the main question the study is designed to answer.
50-m Freestyle Swimming Performance
Official 50-m freestyle race time measured using FINA-approved electronic timing equipment during national Para-swimming competitions.
Measured: Baseline and after 12 weeks of intervention
Secondary outcomes (4)
20-second Sit-up Performance
Number of correctly completed sit-up repetitions performed within 20 seconds to assess trunk flexor endurance.
Measured: Baseline and after 12 weeks of intervention
20-second Reverse Sit-up Performance
Number of correctly completed reverse sit-up repetitions performed within 20 seconds to assess trunk extensor endurance.
Measured: Baseline and after 12 weeks of intervention
Supine Bent-knee Leg Hold Duration
Duration in seconds that participants maintained the supine bent-knee leg hold position to assess lumbopelvic endurance.
Measured: Baseline and after 12 weeks of intervention
Prone Trunk-extension Hold Duration
Duration in seconds that participants maintained the prone trunk-extension hold position to assess trunk extensor endurance.
Measured: Baseline and after 12 weeks of intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Jun 2026
- Study start1 Mar 2024
- Primary completion1 Jun 2024
- Study completion1 Jun 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for SportStudies 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Gelisim University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Görkem Açar, Istanbul Gelisim University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07619963
- Sponsor's protocol ID
- 2024-03-73
- Status last verified
- May 2026
- First submitted
- 7 May 2026
- Last updated
- 2 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided: Individual participant data sharing has not yet been determined. Data may be shared upon reasonable request after publication of the study results and following approval by the corresponding author and institutional ethics requirements. Participant confidentiality and privacy protections will be maintained.
Study at a glance
From the registry record, last updated by the sponsor on 2 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of a 12-Week Isometric Core Training Program on Trunk Endurance and 50-m Freestyle Performance in Adolescent Amputee Swimmers: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07619963
- Acronym / sponsor ID
- 2024-03-73
- Conditions
- Sport, Amputation, Paralympic Athletes
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Istanbul Gelisim UniversityUniversity, hospital or other
- Study start
- 1 Mar 2024 (actual)
- Primary completion
- 1 Jun 2024 (actual)
- Study completion
- 1 Jun 2024 (actual)
- First posted
- 2 Jun 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.
Adolescent amputee swimmers often experience challenges related to trunk stabilization, postural control, and efficient force transfer during swimming because of asymmetric biomechanics associated with limb loss. Core muscle training has been proposed as a potential dryland conditioning strategy to support swimming performance and trunk endurance in Para-swimmers; however, evidence from randomized controlled trials in adolescent amputee swimmers remains limited.
The purpose of this study is to investigate the effects of a 12-week supervised isometric core training program on trunk muscular endurance and 50-meter freestyle swimming performance in adolescent amputee swimmers. Participants will be randomly assigned to either an experimental group receiving additional isometric core training together with standard swimming training or a control group performing standard swimming training only.
Primary outcome measures will include 50-meter freestyle performance time. Secondary outcome measures will include trunk muscular endurance assessments such as the 20-second sit-up test, 20-second reverse sit-up test, supine bent-knee leg hold, and prone trunk-extension hold. Assessments will be performed before and after the 12-week intervention period.
The findings of this study may contribute to the development of evidence-based dryland conditioning programs for adolescent Para-swimmers with limb amputations.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental Group | Experimental | Behavioral: Isometric Core TrainingParticipants in the experimental group completed a 12-week supervised isometric core training program in addition to their regular swimming training. The intervention was performed three times per week and included individualized trunk stabilization and endurance exercises adapted to the athlete's level of amputation. |
| Control Group | Active comparator | Other: Standard Swimming TrainingParticipants in the control group continued their regular swimming training program for 12 weeks without additional dryland core training. |
Who may qualify
- Ages
- 14 to 20 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
Key inclusion criteria (6 listed)
- Upper- or lower-limb amputation
- Participation in at least two consecutive Turkish National Para-swimming -Championships
- Active training with regular competitive participation
- Age between 14 and 20 years
- Ability to participate in regular swimming and exercise training
Key exclusion criteria (4 listed)
- Discontinuation of regular training or competitive participation
- Acute musculoskeletal injury or cardiovascular condition preventing maximal exercise participation
- Refusal or inability to participate in the study protocol
- Failure to complete the intervention or assessment procedures
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 |
|---|---|---|
| Isometric Core TrainingParticipants assigned to the experimental group completed a supervised 12-week isometric core training program in addition to their regular swimming training. The intervention was performed three times per week and included individualized exercises targeting trunk stabilization, abdominal endurance, and lumbopelvic control. Exercises were adapted according to the athlete's level of upper- or lower-limb amputation and included front plank, side plank, trunk-extension holds, bridge exercises, Pallof press holds, and bird-dog/dead-bug variations. Training duration and resistance were progressively increased throughout the intervention period. | Behavioural | Experimental Group |
| Standard Swimming TrainingParticipants assigned to the control group continued their regular swimming training program for 12 weeks without any additional dryland core training intervention. The swimming program consisted of routine in-water training sessions conducted at the Ankara Olympic Preparation Centre according to the standard preparation program for competitive Para-swimmers. | Other | Control Group |
Primary outcome
50-m Freestyle Swimming Performance
Time frame: Baseline and after 12 weeks of intervention
Official 50-m freestyle race time measured using FINA-approved electronic timing equipment during national Para-swimming competitions.
4 secondary outcomes
20-second Sit-up Performance
Time frame: Baseline and after 12 weeks of intervention
20-second Reverse Sit-up Performance
Time frame: Baseline and after 12 weeks of intervention
Supine Bent-knee Leg Hold Duration
Time frame: Baseline and after 12 weeks of intervention
Prone Trunk-extension Hold Duration
Time frame: Baseline and after 12 weeks of intervention
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 2 Jun 2026.
- Individual participant dataSharing planned: Undecided. Individual participant data sharing has not yet been determined. Data may be shared upon reasonable request after publication of the study results and following approval by the corresponding author and institutional ethics requirements. Participant confidentiality and privacy protections will be maintained.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Isometric Core Training and Standard Swimming Training in people with Sport and Amputation, run by Istanbul Gelisim 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 6 inclusion and 4 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 2 Jun 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?
50-m Freestyle Swimming Performance (time frame: Baseline and after 12 weeks of intervention). 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 2 Jun 2026.