NCT05178394

Brief Summary

Objective: This study examined the effects of weightlifting belts and wrist straps on the kinematics of the deadlift exercise, time to complete a deadlift and rating of perceived exertion (RPE) in male recreational weightlifters. Methods: Twenty participants used various combinations of belt and straps during a conventional deadlift. The hip and knee flexion, cervical lordosis, thoracic kyphosis and lumbar lordosis angles and time to complete a deadlift were measured using video analysis software. RPE was also recorded.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2021

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2021

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2021

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

November 20, 2021

Completed
2 months until next milestone

First Posted

Study publicly available on registry

January 5, 2022

Completed
Last Updated

January 5, 2022

Status Verified

December 1, 2021

Enrollment Period

5 months

First QC Date

November 20, 2021

Last Update Submit

December 16, 2021

Conditions

Outcome Measures

Primary Outcomes (5)

  • Hip flexion angle

    Hip flexion angle during setup phase of a deadlift

    Through study completion, an average of two hours

  • Knee flexion angle

    Knee flexion angle during setup phase of a deadlift

    Through study completion, an average of two hours

  • Cervical lordosis angle

    Cervical lordosis angle during lockout phase of a deadlift

    Through study completion, an average of two hours

  • Thoracic kyphosis angle

    Thoracic kyphosis angle during lockout phase of a deadlift

    Through study completion, an average of two hours

  • Lumbar lordosis angle

    Lumbar lordosis angle during lockout phase of a deadlift

    Through study completion, an average of two hours

Secondary Outcomes (2)

  • Time

    Through study completion, an average of two hours

  • Rating of perceived exertion

    Through study completion, an average of two hours

Study Arms (1)

Male recreational weightlifters

EXPERIMENTAL
Device: Weightlifting belts and wrist straps

Interventions

The participants wore a weightlifting belt (Heavywear Nylon Contour Belt H9, North Carolina, USA) for the "with weightlifting belt" conditions and/or put on a pair of wrist straps (Versa Gripps Professional Series, Versa Gripps, Maine, USA) for the "with wrist strap" conditions. The steps involved in completing a conventional deadlift have been detailed in Holmes.

Male recreational weightlifters

Eligibility Criteria

Age18 Years - 30 Years
Sexmale(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • men
  • aged 18 to 30 years
  • more than 3 years of weightlifting experience
  • have been training at least 4 hours per week
  • engage in recreational weightlifting

You may not qualify if:

  • musculoskeletal disorders (e.g., leg length discrepancies and severe flat feet)
  • neurological disorders (e.g., epilepsy)
  • spinal problems (e.g., scoliosis)
  • upper limb problems (e.g., history of shoulder dislocation, tennis or golf elbow)
  • recent injuries that could affect performance
  • train regularly for other sports.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Hong Kong

Hong Kong, Hong Kong

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
OTHER
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal investigator

Study Record Dates

First Submitted

November 20, 2021

First Posted

January 5, 2022

Study Start

January 1, 2021

Primary Completion

June 1, 2021

Study Completion

September 1, 2021

Last Updated

January 5, 2022

Record last verified: 2021-12

Data Sharing

IPD Sharing
Will not share

Confidentiality of participant information.

Locations