Multimodal Exercises on Sprint Performance of Rugby Players

October 17, 2024 updated by: University of the Balearic Islands

Effects of a Multimodal Exercise Program on the Kinematics and Sprint Performance of Young Rugby Players: an Experimental Study.

This study is designed to evaluate the effects of a multimodal exercise program in the sprint performance and kinematics of adolescent rugby players. For this, an experimental study with an intervention group (IG) and a control group (CG) is designed. During 6 weeks of the 2022-2023 preseason of rugby seven, IG will include a multimodal exercise program in their training routine. Meanwhile, CG will maintain their training routine. The study will be developed in the Sport High Performance Centre of Balearic Islands during the season of rugby seven (from August to September, 2022). All rugby athletes from under-16 and under-18 autonomic rugby teams will be invited to participate in this study throughout an email invitation from their regional rugby federation. Prior to the beginning of the study, all participants will sign the inform consent, or their legal tutors in case of minors. The Ethical Committee of the local university approved this study (278CER22) according to the Declaration of Helsinki.

One week before intervention period, sociodemographic and sportive data will be registered (age, sex, body mass, height, and sport experience). Body mass and height will be evaluated with a ±100-g precision digital weight scale (Tefal, France) and a t201-t4 adult height scale (Asimed, Spain), respectively. Also, the rugby players will complete a familiarization process consisting on a standardized warm up and 3 progressive sprints (i.e. 30 m at 50%, 70% and 90% of maximal effort).

All testing procedure (pre-test and post-test) will be completed at a similar daytime (between 17h and 19h) on the same natural grass field. The test procedure listed in our study will consist on two maximal 30-m sprints to obtain mechanical variables of horizontal force-velocity profile and kinematics during sprinting.

Players from IG will perform a multimodal exercise program two days per week during six weeks. This program will include running technical drills, exercises for lumbopelvic stabilization and resisted sprints. This program will be supervised by two experts in this field.

The investigators hypothesize that those rugby players who add the multimodal exercise program to their training routine will increase mechanical and kinematics variables of sprint performance.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

24

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
    • Islas Baleares
      • Palma De Mallorca, Islas Baleares, Spain, 07009
        • Sport High Performance Centre of Balearic Islands

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 18 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • to have at least 14 years old
  • to have at least 2 years of experience as rugby player

Exclusion Criteria:

  • to have sustained a lower limb or lumbopelvic injury during the previous 6 months to start of the study
  • to have sustained a lower limb or spine surgery during the previous 12 months to start of the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Intervention group
Intervention group will add to their training routine a multimodal exercise program (two days per week, during six weeks). This program will include running technical drills, exercises for lumbopelvic stabilization and resisted sprints by using sled.
Other: Multimodal exercise program

Running technical drills: pogo, askip, dribble, scissor, etc. Exercises for lumbopelvic stabilization: mobility exercises, hip thrust, dead lift, lunge to skip.

Resisted sprints by using a sled: resistance leading to a 60% and 30% of optimal load (previously calculated)
No Intervention: Control group
Control group will maintain their training routine.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sprint performance
Time Frame: Change from baseline and between group differences in sprint performance after the intervention period of 6 weeks
Sprint performance measured with MySprint. Resulting from maximal 30-m sprint, six pairs of brands with parallax corrected will be placed at 0, 5, 10, 15, 20 and 30 m to measure the five different split times in seconds during the 30-m trials. The camera, which records 240 frame per second, will be situated on a tripod (in the sagittal plane) 10 meters away from the fourth marker in meter 15.
Change from baseline and between group differences in sprint performance after the intervention period of 6 weeks
Force-Velocity Profile (F-V)
Time Frame: Change from baseline and between group differences in horizontal force-velocity profile after the intervention period of 6 weeks
F-V Profile measured by My Sprint App, resulting from maximal 30-m sprint, theorical maximal horizontal force (F0), maximal mechanical power output in the horizontal direction (Pmax), rate of decrease in RF with increasing speed during sprint acceleration (DRF), Slope of the linear F-V relationship (Sfv), Ratio of force (RF) and maximal value of RF (RFmax). The camera, which records 240 frame per second, will be situated on a tripod (in the sagittal plane) 10 meters away from the fourth marker in meter 15.
Change from baseline and between group differences in horizontal force-velocity profile after the intervention period of 6 weeks
Sprint spatiotemporal and kinematics
Time Frame: Change from baseline and between groups in sprint spatiotemporal and kinematics at 6 weeks
Sprint spatiotemporal and kinematics will be analyzed with Kinovea program (v.0.8.15). The following variables will be analyzed: contact time (s), length step (m; horizontal displacement between the toe tips at adjacent touchdowns), step rate (Hz; the reciprocal of step duration). Moreover, in the frame that the foot touchdown and the frame that the foot touch off trunk and hip (ipsilateral and contralateral) angles will be quantified. The camera, which records 240 frame per second, will be situated 9 meters away from 22.5 m on a tripod at a height of 1.1 meters in the sagittal plane.
Change from baseline and between groups in sprint spatiotemporal and kinematics at 6 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of the Balearic Islands

Investigators

  • Study Director: Natalia Romero Franco, PhD, University of the Balearic Islands

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 8, 2022

Primary Completion (Actual)

August 8, 2022

Study Completion (Actual)

September 25, 2022

Study Registration Dates

First Submitted

July 30, 2022

First Submitted That Met QC Criteria

August 2, 2022

First Posted (Actual)

August 3, 2022

Study Record Updates

Last Update Posted (Actual)

October 21, 2024

Last Update Submitted That Met QC Criteria

October 17, 2024

Last Verified

July 1, 2022

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 278CER22

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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