Multimodal Exercises on Sprint Performance of Rugby Players

Exercise Training Clinical Trial

Official title:

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

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT05485506
• Other study ID #: 278CER22
• Status: Not yet recruiting
• Phase: N/A
• Start date: August 8, 2022
• Est. completion date: September 25, 2022

Study information

• Verified date: July 2022
• Source: University of the Balearic Islands
• Contact: Natalia Romero Franco, PhD
• Phone: 652632864
• Email: natalia.romero[@]uib.es
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 24
• Est. completion date: September 25, 2022
• Est. primary completion date: August 8, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 14 Years to 18 Years

Eligibility

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

Related Conditions & MeSH terms

• Adolescent
• Exercise Training
• Rugby

Intervention

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)

Locations

Country	Name	City	State
Spain	Sport High Performance Centre of Balearic Islands	Palma De Mallorca	Islas Baleares

Sponsors (1)

Lead Sponsor	Collaborator
University of the Balearic Islands

Country where clinical trial is conducted

Spain, 

References & Publications (7)

Ayala F, López-Valenciano A, Gámez Martín JA, De Ste Croix M, Vera-Garcia FJ, García-Vaquero MDP, Ruiz-Pérez I, Myer GD. A Preventive Model for Hamstring Injuries in Professional Soccer: Learning Algorithms. Int J Sports Med. 2019 May;40(5):344-353. doi: 10.1055/a-0826-1955. Epub 2019 Mar 14. — View Citation

Brooks JH, Fuller CW, Kemp SP, Reddin DB. Incidence, risk, and prevention of hamstring muscle injuries in professional rugby union. Am J Sports Med. 2006 Aug;34(8):1297-306. Epub 2006 Feb 21. — View Citation

Lahti J, Huuhka T, Romero V, Bezodis I, Morin JB, Häkkinen K. Changes in sprint performance and sagittal plane kinematics after heavy resisted sprint training in professional soccer players. PeerJ. 2020 Dec 15;8:e10507. doi: 10.7717/peerj.10507. eCollection 2020. — View Citation

Mendiguchia J, Castaño-Zambudio A, Jiménez-Reyes P, Morin JB, Edouard P, Conceição F, Tawiah-Dodoo J, Colyer SL. Can We Modify Maximal Speed Running Posture? Implications for Performance and Hamstring Injury Management. Int J Sports Physiol Perform. 2022 Mar 1;17(3):374-383. doi: 10.1123/ijspp.2021-0107. Epub 2021 Nov 18. — View Citation

Mendiguchia J, Edouard P, Samozino P, Brughelli M, Cross M, Ross A, Gill N, Morin JB. Field monitoring of sprinting power-force-velocity profile before, during and after hamstring injury: two case reports. J Sports Sci. 2016;34(6):535-41. doi: 10.1080/02640414.2015.1122207. Epub 2015 Dec 9. — View Citation

Mendiguchia J, Martinez-Ruiz E, Edouard P, Morin JB, Martinez-Martinez F, Idoate F, Mendez-Villanueva A. A Multifactorial, Criteria-based Progressive Algorithm for Hamstring Injury Treatment. Med Sci Sports Exerc. 2017 Jul;49(7):1482-1492. doi: 10.1249/MSS.0000000000001241. — View Citation

Setuain I, Lecumberri P, Izquierdo M. Sprint mechanics return to competition follow-up after hamstring injury on a professional soccer player: A case study with an inertial sensor unit based methodological approach. J Biomech. 2017 Oct 3;63:186-191. doi: 10.1016/j.jbiomech.2017.08.010. Epub 2017 Aug 20. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Sprint performance	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
Primary	Force-Velocity Profile (F-V)	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
Primary	Sprint spatiotemporal and kinematics	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