Dynamic Strength Index-based Intervention in Basketball.

Effectiveness of an Individualized Training Based on Dynamic Strength Index on Sprinting, Jumping and Change of Direction Performance in Basketball Players: a Randomized Controlled Trial.

The goal of this randomized controlled trial will be to determine the effectiveness of the dynamic strength index (DSI) in optimizing training programs to improve physical performance proxies (sprinting, jumping, and CoD) in basketball players. Subjects will be randomly allocated to one of two groups: the intervention group and the control group. Measurement and intervention will occur during a 7-week in-season period, right before the play off starts. Throughout this period, all participants will engage in an average of 10 hours of basketball training per week, which will comprise 5 basketball sessions and 2 strength training sessions. In addition, they are anticipated to play 2 games weekly. A pre-test will be performed one week before the first training session, and post-tests will be performed in the week after the training sessions have finished. Athletes will perform both testing sessions at the same time of the day (± 2 hours). Each athlete will perform a 20-m sprint test, with timing gates positioned at every 5 m distance, a 505 CoD test, countermovement jump (CMJ), and isometric mid-thigh pull (IMTP). Based on CMJ peak force and IMTP peak force data, we will calculate DSI. Based on the average DSI value, the participants in the intervention group will be divided into two groups - strength group and ballistic group.

Study Overview

• Status: Completed
• Conditions: Sports; Strength Training; Basketball
• Intervention / Treatment: Other: Resistance training based on DSI value; Other: Normal training group

• Study Type: Interventional
• Enrollment (Actual): 46
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Slovenia
  • Izola, Slovenia, 6310
    • University of Primorska, Faculty of Health Sciences

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Perform basketball training for at least 5 years
• Plays in professional regional, national or international league

Exclusion Criteria:

• Any musculoskeletal injury in the past 6 months
• Any neurological issues
• Any chronic non-communicable diseases

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: DSI-based training group; This group will perform resistance exercises based in their DSI values.	Other: Resistance training based on DSI value; The intervention consist of modifying the ongoing resistance exercises. Those with low DSI values will perform ballistics, explosive exercises. Those with high DSI will perform heavy-load training. The resistance training program will consist of 2 sessions per week for 5 weeks (10 sessions in total). The sessions will be separated by a minimum of 48 hours. The strength training group will consist mostly of exercises with high load, whereas the ballistic training group will perform ballistic exercises with low load or without any additional load. The training principle will be the same for both subgroups, consisting of 3 exercises per training session and a total of 6 exercises per week, with four of the exercises being bilateral, one unilateral, and one quasi-unilateral (Bulgarian split squat and scissor jumps).
Active Comparator: Normal training group; This group will perform a normal, typical resistance exercise program	Other: Normal training group; The participants will do a general training program (not based on DSI values). The resistance training program will consist of 2 sessions per week for 5 weeks (10 sessions in total). The sessions will be separated by a minimum of 48 hours. The strength training group will consist mostly of exercises with high load, whereas the ballistic training group will perform ballistic exercises with low load or without any additional load. The training principle will be the same for both subgroups, consisting of 3 exercises per training session and a total of 6 exercises per week, with four of the exercises being bilateral, one unilateral, and one quasi-unilateral (Bulgarian split squat and scissor jumps).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
20 m Sprint performance	20 m sprint test in seconds	Baseline and after 5 weeks.
Change of direction performance	Standardized 505-agility test	Baseline and after 5 weeks.
Jumping ability	Jump height during jumps with countermovement	Baseline and after 5 weeks.

Collaborators and Investigators

• Sponsor: University of Primorska
• Collaborators: Middlesex University

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2023
• Primary Completion (Actual): October 25, 2023
• Study Completion (Actual): May 1, 2024

Study Registration Dates

• First Submitted: October 12, 2023
• First Submitted That Met QC Criteria: October 18, 2023
• First Posted (Actual): October 23, 2023

Study Record Updates

• Last Update Posted (Estimated): December 9, 2024
• Last Update Submitted That Met QC Criteria: December 4, 2024
• Last Verified: December 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: DSI_Intervention_FVZ

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No