Club de Baseball Tigers de San Pedro de Uraba
Medellín, Antioquia, Colombia
Completed
NCT Number: NCT07030296
Effects of Sprint Training With and Without Weighted Vests on Speed in Youth Baseball Players
Brief Summary We want to find out whether training with a weighted vest can help improve speed in U-14 baseball players. To do this, we will conduct a study with athletes like you, comparing performance before and after the training program.
How will we do it?
Participants will be randomly assigned to one of two groups:
Group 1: Will train with a weighted vest.
Group 2: Will train without a weighted vest.
Both groups will follow the same training program over 16 sessions. Running speed will be measured before and after the program to evaluate any improvements.
Who can participate?
Boys aged 13 to 14 years.
Members of the Tigres Baseball Club from San Pedro de Urabá.
Must have permission from a parent or legal guardian.
Who cannot participate?
Players with current injuries.
Those who regularly practice another sport.
Those who leave the club or are unable to complete the pre- and post-tests.
Is it safe? Yes! All procedures follow safety guidelines and will be conducted with informed consent from players and their families. Our goal is to enhance sports performance in a safe and effective way.
Completed
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Notify MeKey information
Age range
13 year–14 year
Sex eligibility
Male
Study type
Interventional
Phase
Not applicable
Primary location
About this study
This randomized controlled trial aims to evaluate the effects of sprint training with and without a weighted vest on running speed in male U-14 baseball players. The intervention will consist of a standardized sprint training program performed over 16 sessions (2-3 sessions per week for approximately 6 weeks). Participants will be randomly assigned into two groups: an experimental group using weighted vests and a control group without weighted vests.
The weighted vest will represent approximately 10% of the participant's body weight and will be worn during specific sprint training exercises. Both groups will perform the same sprint-based training protocol, including linear sprints and acceleration drills, under the supervision of qualified coaches.
The primary outcome will be sprint performance, assessed via time over 20 meters (with or without intermediate splits, depending on equipment availability). Measurements will be taken at baseline and after completion of the training program.
Inclusion and exclusion criteria have been defined to ensure participant safety and homogeneity of the sample. Ethical approval has been obtained, and informed consent will be secured from parents or legal guardians before participation. This study intends to contribute to evidence-based strategies for improving speed in youth baseball players through load-based sprint training interventions.
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
- Male athletes aged 13 to 14 years
- Member of the Tigres Baseball Club of San Pedro de Urabá
- Signed informed consent from parent or legal guardian
- Regular attendance at training sessions during the intervention period
Exclusion criteria
- Current musculoskeletal injury
- Regular participation in other sports or physical training programs
- Failure to complete pre- and post-intervention tests
- Withdrawal from the club during the study period
Treatment and study plan
Sprint Training With Weighted Vest
BehavioralParticipants performed a sprint training program wearing a weighted vest equal to approximately 10% of their body weight. The program lasted 6 weeks and included 16 sessions of linear and change-of-direction sprint drills. The goal was to examine whether the added external load improved running speed over 30 and 60 yards.
Other names: Resisted Sprint Training
Sprint Training Without Weighted Vest
BehavioralParticipants completed the same sprint training program as the experimental group but without the use of a weighted vest. The intervention lasted 6 weeks and consisted of 16 sessions including sprint and agility exercises. This group served as the control condition to assess the effect of external resistance.
Other names: Unresisted Sprint Training
Primary outcomes
-
Change in 30-yard sprint time
Time frame: Measured at baseline (pre-intervention) and after 16 training sessions (post-intervention), approximately 6 weeks apart.
Time (in seconds) to complete a linear 30-yard sprint. Used to assess improvements in short-distance speed after the intervention.
-
Change in 60-yard sprint time
Time frame: Pre- and post-intervention (6 weeks apart)
Time (in seconds) to complete a 60-yard linear sprint. Assesses improvements in extended sprint speed.
Sponsors and collaborators
Lead sponsor
Federal University of Vicosa
Other
Registry information
Official study title
Effects of Sprint Training With and Without a Weighted Vest on Running Speed in Pre-adolescent Baseball Players
Acronym: SWIFT-BASE
Important dates
- Study start
- 2025
- Primary completion
- 2025
- Study completion
- 2025
- First posted
- Jun 22, 2025
- Registry last updated
- Jun 22, 2025
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.