NCT07030296

Effects of Sprint Training With and Without Weighted Vests on Speed in Youth Baseball Players

Effects of Sprint Training With and Without a Weighted Vest on Running Speed in Pre-adolescent Baseball Players

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (actual)
• Sponsor: Federal University of Vicosa · Academic / Other
• Sex: Male
• Age: 13 Years – 14 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

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.

Conditions

• Youth Baseball Speed, Sprint Training, Weighted Vest, Change of Direction

Interventions

Type	Name	Description
BEHAVIORAL	Sprint Training With Weighted Vest	Participants 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.
BEHAVIORAL	Sprint Training Without Weighted Vest	Participants 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.

Timeline

• Start date: 2025-02-01
• Primary completion: 2025-04-10
• Completion: 2025-04-10
• First posted: 2025-06-22
• Last updated: 2025-06-22

Locations

1 site across 1 country: Colombia