Neuromuscular Variables and Performance in Mexican Weightlifters

NCT ID: NCT07277335

Last Updated: 2025-12-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-12-27

Study Completion Date

2025-12-31

Brief Summary

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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.

Detailed Description

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This cross-sectional observational study will be conducted during the 2025 "El Pavo" National Tournament, held in San Luis Potosí, Mexico, with athletes officially registered with the Mexican Weightlifting Federation (FMLP). Vertical jump impulse will be assessed using the Deep Squat Jump (DSJ) approximately two hours after each athlete's last valid attempt, followed by the Isometric Pull Start Position (IPSP) test to measure isometric pull force. Competitive performance data-best Snatch (SN), Clean \& Jerk (CJ), and Total (TOT)-will be obtained from official competition records, along with the athlete's final placement within their sex and body mass category.

The study will analyze athletes from two age groups (U-15 and Over-18) and both sexes, selecting one light and one heavy body mass division per group. The included divisions are: U-15, Female: -44 kg (light), -63 kg (heavy) and Male: -56 kg (light), -79 kg (heavy); Over-20, Female: -53 kg (light), -77 kg (heavy) and Male: -65 kg (light), -94 kg (heavy)

Conditions

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Isometric Muscle Strength Jumping Performance Weightlifting Performance Measures

Study Design

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Observational Model Type

OTHER

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Junior weightlifters younger than 15 years old

Isometric start position pull (ISPP)

Intervention Type 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.

Vertical impulse

Intervention Type 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.

Performance

Intervention Type 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)

Isometric start position pull (ISPP)

Intervention Type 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.

Vertical impulse

Intervention Type 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.

Performance

Intervention Type OTHER

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

Interventions

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Isometric start position pull (ISPP)

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.

Intervention Type OTHER

Vertical impulse

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.

Intervention Type OTHER

Performance

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

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 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.

Exclusion Criteria

* Weightlifters registered for the 2025 "El Pavo" National Tournament who present any declared health issues.
Minimum Eligible Age

13 Years

Maximum Eligible Age

23 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Ángel Rodríguez

NETWORK

Sponsor Role lead

Responsible Party

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Ángel Rodríguez

Researcher

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Diego A Bonilla

Role: STUDY_DIRECTOR

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

Rodrigo D Merlo, PhD

Role: STUDY_CHAIR

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

Ángel Rodríguez-Chávez, Mg

Role: PRINCIPAL_INVESTIGATOR

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

Jorge L Petro

Role: STUDY_CHAIR

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

Leoncio Moreno

Role: STUDY_CHAIR

Federación Mexicana de Levantamiento de Pesas

Shyam Chavda

Role: STUDY_CHAIR

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

Marcos A Soriano

Role: STUDY_CHAIR

Centre for Sport Studies, Rey Juan Carlos University, 28943 Madrid, Spain; [email protected]

Locations

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Hotel María Dolores

San Luis Potosí City, San Luis Potosí, Mexico

Site Status RECRUITING

Countries

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Mexico

Facility Contacts

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Leoncio Moreno Leoncio, Event Coordinator

Role: primary

8124066707

References

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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. 2025 Jan 30:1-17. doi: 10.1080/14763141.2025.2458478. Online ahead of print.

Reference Type BACKGROUND
PMID: 39882780 (View on PubMed)

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.

Reference Type BACKGROUND
PMID: 40266638 (View on PubMed)

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.

Reference Type BACKGROUND
PMID: 19387408 (View on PubMed)

Other Identifiers

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Kraft2025_DBSS

Identifier Type: OTHER

Identifier Source: secondary_id

Kraft2025_DBSS

Identifier Type: -

Identifier Source: org_study_id

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