Multimodal Exercises on Sprint Performance of Rugby Players

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Exercise Training Adolescent Rugby

Age range

14 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sport High Performance Centre of Balearic Islands

Palma de Mallorca, Balearic Islands, 07009, Spain

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Multimodal exercise program

Other

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)

Primary outcomes

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.
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.
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.

Sponsors and collaborators

Lead sponsor

University of the Balearic Islands

Other

Registry information

Official study title

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

Important dates

Study start: 2022
Primary completion: 2022
Study completion: 2022
First posted: Aug 3, 2022
Registry last updated: Oct 21, 2024

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.

Published trials that share one or more normalized conditions with this study.

Not Yet Recruiting