Neuromuscular Variables and Performance in Mexican Weightlifters

NCT07277335 | Recruiting

• 1 other identifier: Kraft2025_DBSS
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to determine whether, within each weight and sex category, higher isometric pull force or greater vertical jump impulse is associated with better final placement in the competition.

Conditions

Jumping Performance; Weightlifting; Performance Measures; Isometric Muscle Strength

Outcome Measures

Primary Outcomes (3)

• Isometric start position pull (ISPP)

  The participants' force production capacity will be assessed. The test will be conducted on a force platform

  <5 minutes

• Vertical impulse

  A force platform will be used to measure the lower-limbs vertical impulse during a The Deep Squat Jump (DSJ)

  <5 minutes

• Performance

  The final placement of each athlete in their category

  <1 minutes

Study Arms (2)

Junior weightlifters younger than 15 years old

Other: Isometric start position pull (ISPP); Other: Vertical impulse; Other: Performance

Elite weightlifters older than 18 years old (up to 23 years)

Other: Isometric start position pull (ISPP); Other: Vertical impulse; Other: Performance

Interventions

Performance OTHER

Performance indicators will be obtained from official competition records, extracting the best valid loads in Snatch (SN), Clean \& Jerk (CJ), and Total (TOT)

Elite weightlifters older than 18 years old (up to 23 years); Junior weightlifters younger than 15 years old

Isometric start position pull (ISPP) OTHER

The participants' force production capacity will be assessed. The test will be conducted on a force platform. Each athlete will perform general and specific warm-up and familiarization with three isometric attempts with CJ grip (\~50%, 80% and 100% perceived effort). For measurement, each participant will execute two 3-s maximum attempts with CJ grip, with 1 minute rest between efforts.

Elite weightlifters older than 18 years old (up to 23 years); Junior weightlifters younger than 15 years old

Vertical impulse OTHER

A force platform will be used to measure the lower-limbs vertical impulse during a The Deep Squat Jump (DSJ). Participants will execute the DSJ without any countermovement, ensuring maintenance of the full squat position for 3-4 seconds before takeoff to avoid any contribution from elastic energy storage.

Elite weightlifters older than 18 years old (up to 23 years); Junior weightlifters younger than 15 years old

Eligibility Criteria

• Age: 13 Years - 23 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Weightlifters younger than 15 years old and older than 18 years old (up to 23 years), who will participate in the 2025 edition of the annual national tournament "El Pavo," organized by the Mexican Weightlifting Federation, will be evaluated

You may qualify if:

• Weightlifters younger than 15 years old and older than 18 years old (up to 23 years), registered to compete in the 2025 "El Pavo" National Tournament with no declared health issues.

You may not qualify if:

• Weightlifters registered for the 2025 "El Pavo" National Tournament who present any declared health issues.

Sponsors & Collaborators

• Ángel Rodríguez: lead

Study Sites (1)

Hotel María Dolores

San Luis Potosí City, San Luis Potosí, 78390, Mexico

RECRUITING

Related Publications (3)

• Joffe SA, Chavda S, Gilham J, Sandercock GRH, Tallent J. A comparison of maximal isometric force in the first pull, transition and second pull of the clean and their contribution to predict performance in national and international level weightlifters. Sports Biomech. 2026 Feb;25(2):281-297. doi: 10.1080/14763141.2025.2458478. Epub 2025 Jan 30.

  PMID: 39882780 BACKGROUND

• Soriano MA, Flores FJ, Alonso-Aubin DA, Garcia-Sanchez C, Ceniza-Villacastin JA, Jimenez-Ormeno E, Lama-Arenales J, Comfort P. Associations Between Maximum Isometric Strength and Weightlifting Performance in Youth Weightlifters. J Strength Cond Res. 2025 May 1;39(5):570-578. doi: 10.1519/JSC.0000000000005052.

  PMID: 40266638 BACKGROUND

• Vizcaya FJ, Viana O, del Olmo MF, Acero RM. Could the deep squat jump predict weightlifting performance? J Strength Cond Res. 2009 May;23(3):729-34. doi: 10.1519/JSC.0b013e3181a04dc3.

  PMID: 19387408 BACKGROUND

Study Officials

• Diego A Bonilla

  Research Division, Dynamical Business & Science Society-DBSS International SAS

  STUDY DIRECTOR

• Rodrigo D Merlo, PhD

  Research Division, Dynamical Business & Science Society-DBSS International SAS

  STUDY CHAIR

• Ángel Rodríguez-Chávez, Mg

  Research Division, Dynamical Business & Science Society-DBSS International SAS

  PRINCIPAL INVESTIGATOR

• Jorge L Petro

  Research Division, Dynamical Business & Science Society-DBSS International SAS

  STUDY CHAIR

• Leoncio Moreno

  Federación Mexicana de Levantamiento de Pesas

  STUDY CHAIR

• Shyam Chavda

  London Sports Institute, Middlesex University, West Stand, Stone X Stadium, Greenlands Lane, London NW4 1RL, UK

  STUDY CHAIR

• Marcos A Soriano

  Centre for Sport Studies, Rey Juan Carlos University, 28943 Madrid, Spain; miguel.delolmo@urjc.es

  STUDY CHAIR

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: NETWORK
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Researcher

Study Record Dates

• First Submitted: November 26, 2025
• First Posted: December 11, 2025
• Study Start: December 27, 2025
• Primary Completion: December 30, 2025
• Study Completion: December 31, 2025
• Last Updated: December 11, 2025

Record last verified: 2025-12

Data Sharing

• IPD Sharing: Will not share

Locations

ME (1)