An interventional study of Velocity Based Squat and Bench Press Training and Velocity Based Squat Training in Exercise (EX), Strength Training Effects and Soccer Performance, sponsored by Uludag University. Completed at 1 site in Turkey (Türkiye). Open to male participants aged 16 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-09.
Sponsored by Uludag University · Not applicable, Interventional, and Other
Among 995 studies in Motor Activity with a site in Turkey — 196 open to participants now, 225 under way, none of them phase 3. Motor Activity · Turkey.
Among the 995 studies in Motor Activity with a site in Turkey, this one is the 237th largest by enrollment of the 768 interventional ones that give a count, is one of 127 that started in 2022, is one of 768 with no phase, and was the 963rd registered.
9,798 studies on the registry are indexed under Motor Activity; 1,910 are open to participants now.
Browse Motor Activity studies →196 of the 995 studies in Motor Activity with a site in Turkey are open now. Recruiting first, the newest first:
Karabuk University · Sites in Turkey
Ages 18–65
Gaziantep Islam Science and Technology University · Sites in Turkey
Ages 18+
Bahçeşehir University · Sites in Turkey
Ages 45–65
Hacettepe University · Sites in Turkey
Ages 18+ · Men only
Istanbul University - Cerrahpasa · Sites in Turkey
Ages 18–30 · Healthy volunteers
A study can be open while its sites in Turkey have not opened yet or have stopped. Only those recruiting at a site in Turkey →
Of the 1,201 Motor Activity studies recruiting now, 517 (43%) set no upper age limit and 535 (45%) stop at 75 or younger; 180 take children under 18; 420 take healthy volunteers.
This study: 16 Years to 18 Years · male · healthy volunteers too.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
995 studies; the count open now beside each. This study's row is marked.
First in 2002; this study’s year is marked. 127 started in 2022.
By drug class, each counting the studies that test any of its medicines:
This study's enrollment of 58 is close to the median of 60 across 8,388 interventional studies indexed under Motor Activity.
Median enrollment 42 across the 768 interventional studies, 70 across the 227 observational. Of the 697 that completed or were terminated, 5 (1%) have results posted.
This tab as a report to print or save as PDF → With an account.
1 of 995 have an industry lead sponsor. The 10 most frequent:
Uludag University is the lead sponsor of 149 studies on the registry; 42 are open to participants now.
Uludag University has 8 studies filed under Motor Activity — fewer than ten, so there is no comparison to draw.
48 of the studies in Motor Activity with a site in Turkey that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT06989138Medipol UniversityEffects of Orthosis & Exercise on Spondylolisthesis | 2026-11 |
| NCT07681427Hacettepe UniversityEffects of a 12-week T10 Exercise Program on Shooting Performance, Upper Extremity Function, Balance and Reaction Time in Competitive Air Pistol Athletes | 2026-11-15 |
| NCT07767812Kutahya Health Sciences UniversityEffects of Motivational Interviewing on Pain Self-Efficacy and Exercise Behavior in Individuals With Knee Osteoarthritis | 2026-11-15 |
| NCT07229963Hacettepe UniversityExercise Intensity and Postprandial Effects of Breaking Sedentary Behavior in Overweight Adults | 2026-11-20 |
| NCT07034846Istanbul University - CerrahpasaInvestigation of the Effects of Respiratory Muscle Training Combined With Otago Exercises in Elderly Patients Undergoing Coronary Artery Bypass Graft Surgery | 2026-11-25 |
Among the 995 studies in Motor Activity with a site in Turkey, from their registry updates:
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The aim of the present study was to compare the effects of six weeks of velocity-based training (VBT) and traditional percentage-based strength training (TRD) on 20 m sprint performance, vertical jump, and aerobic capacity in elite young football players.
The main research question was: Does VBT produce greater improvements than TRD in these performance markers? Researchers compared VBT with TRD to determine whether VBT leads to superior enhancements in sprint speed, jump performance, and aerobic capacity among elite young football players.
Participants:
Performed either VBT squat training, VBT squat plus bench press training, or TRD squat training. Completed VBT or TRD sessions three times per week for six weeks. Attended the laboratory for measurements and tests before and after the six-week training program.
All participants had been following the same training program for the previous two months: five weekly training sessions (each lasting 60-90 minutes) and one match, with intensity ranging from 50-90% of maximum heart rate calculated using the Karvonen method, monitored with Polar V800 devices. Participants were randomly assigned to three groups, with equal distribution across age categories: 1) Traditional Strength Training (TRD), 2) Velocity Based Squat Training (Sq_V), and 3) Velocity Based Squat + Bench Press Training (SqBp_V). Study protocols were performed on three consecutive days per week, immediately after regular soccer practice. In the TRD group, only the 1-RM was calculated in the first week, while in the SqBp_V and Sq_V groups, 1-RM values were calculated weekly, and the 6-week training program was updated weekly based on these 1-RM values. The last weight lifted was recorded as the 1-RM in kilograms. The number of sets and repetitions was matched between the TRD and Sq_V groups. However, the SqBp_V group performed the same program as Sq_V plus bench press, using the same procedure. Therefore, total weekly volume (sets × repetitions × exercises) was matched between the VBT and TRD groups. Pre tests were conducted one week prior to the intervention, and post tests one week after completion (Figures 1 and 2). The 20 m Sprint, CMJ, and Yo-Yo IR2 were performed as both pre tests and post tests. All workouts and tests were familiarized two days before the pre test. The study was conducted on natural grass and in a fitness facility between 16:00-18:00 at 20-24°C and 60-70% humidity.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Velocity-based strength training (VBT) consisted of squat and bench press exercises.
Other: Velocity Based Squat and Bench Press Training
Velocity-based strength training (VBT) consisted of squat exercises.
Other: Velocity Based Squat Training
Traditional strength training (TRD) consisted of squat exercises.
Other: Traditional Strength Training
The squat and bench press strength program was implemented for six weeks, with three sessions per week, immediately after regular soccer practice. The one-repetition maximum (1-RM) for both squat and bench press was assessed weekly, and the training program was updated accordingly throughout the six-week intervention.
The squat strength program was implemented for six weeks, with three sessions per week, immediately after regular soccer practice. The one-repetition maximum (1-RM) for the squat was assessed weekly, and the training program was updated accordingly throughout the six-week intervention.
The squat strength program was implemented for six weeks, with three sessions per week, immediately after regular soccer practice. The one-repetition maximum (1-RM) for the squat was assessed only in the first week, and this value was used to prescribe training loads throughout the intervention.
Countermovement jump (CMJ)
In the countermovement jump (CMJ) test, vertical jump height was measured using an Infinitek electronic vertical jump device (Infinitek Company, Istanbul, Turkey). Each participant performed two trials, separated by a 60-second passive rest interval. The better performance was recorded for analysis.
Time frame: From enrollment to the completion of the six-week exercise program, participants followed the prescribed training protocol.
20m Sprint
A wireless two-door Sinar photocell device (Sinar, Turkey) was used to measure 20-meter sprint performance. Each participant performed two 20-meter sprints, separated by a three-minute rest interval, and the better time was recorded. Participants were instructed to walk forward naturally with relaxed arms and an upright posture beginning three meters before the timing line. After the final step before the line, they accelerated maximally through the 20-meter distance.
Time frame: From enrollment to the completion of the six-week exercise program, participants followed the prescribed training protocol.
Aerobic capacity
Aerobic capacity was assessed using the Yo-Yo Intermittent Recovery Test Level 2 (Yo-Yo IR2). In this test, participants performed repeated 2 × 20-meter shuttle runs at progressively increasing speeds, moving back and forth between the starting, turning, and finishing lines. Between each shuttle run, a 10-second active recovery period was allowed, during which participants walked or jogged within a 5-meter recovery zone. Running speed was dictated by audio signals automatically controlled by a CD player. Cones were used to mark 2-meter-wide, 20-meter-long running lanes, with an additional cone placed 5 meters behind the starting line to indicate the recovery area.The test was terminated when the participant was unable to continue or failed to reach the finish line on two consecutive occasions. The total distance covered was recorded as the test result. Maximal oxygen uptake was estimated using the following equation: VO2max = distance (m) × 0.0136 + 45.3
Time frame: From enrollment to the completion of the six-week exercise program, participants followed the prescribed training protocol.
TRD One maximum repetition - Squat (TRD 1-RM Squat):
In the TRD group, the one-repetition maximum (1-RM) squat was determined using the traditional percentage-based method. Before the athletes began the test, the coach selected an appropriate starting weight for each participant. Athletes were advised to begin with lower loads to ensure proper anatomical positioning and technique before progressing to heavier weights.
Time frame: Before enrollment to exercise programme.
One maximum repetition - Squat VBT (1-RM Squat VBT)
In the VBT group, the one-repetition maximum (1-RM) squat was measured weekly using an Apple iPhone 7 Plus (iOS 12.4.1; Apple Inc., USA) with the My Lift application (My Jump Lab, Spain). Before beginning the exercise, participants received a verbal command to initiate the movement. The squat exercise was uploaded to the device and recorded. The range of motion during the squat was measured in meters. For standardization, participants were instructed to squat until reaching 90° of knee flexion and then immediately return to the starting position with full extension of the knee and hip joints.
Time frame: Before enrollment to exercise programme.
One maximum repetition - Bench Press VBT (1-RM Bench press VBT)
In the VBT group, the one-repetition maximum (1-RM) bench press was measured weekly using an Apple iPhone 7 Plus (iOS 12.4.1; Apple Inc., USA) with the My Lift application (My Jump Lab, Spain). Before beginning the exercise, participants received a verbal command to initiate the movement. The bench press exercise was uploaded to the device and recorded. The range of motion during the bench press was measured in meters. For standardization, participants were instructed to lower the bar to the chest and then immediately return to the starting position with full elbow extension. Prior to initiating the speed-based strength training measurement, the distance from the center of the bar to the participant's chest was measured and entered into the My Lift application as required.
Time frame: Before enrollment to exercise programme.
Plan to share: Undecided
Ran from Aug 2022 to primary completion in Oct 2022, 1 month.
Of 5,147 non-industry interventional studies with no phase under Motor Activity, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 36. This study's 1 month is below that.
Counting every sponsor, half of 5,207 studies reached it within 17 months; a quarter within 7 and three quarters within 36.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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