Skip to main content
OpenTrials
Completed

NCT Number: NCT05505786

The Effects of Increased vs. Traditional Squat Stance Width on Performance Indices in Elite Rugby League Players

The back squat is a commonly utilized resistance training exercise for the promotion of both performance and musculoskeletal health. There are a range of manipulations that can be made to the setup of this resistance exercise, with once such adaptation being the stance width when performing the exercise. This intervention aims to explore the effects of increasing the stance with on performance indices in elite rugby league players.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Sports Performance

Age range

18 year–35 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

University of Central Lancashire

Preston, Lancashire, PR4 0PE, United Kingdom

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Rugby league player contracted to a professional Super League team
  • 5-years minimum of back squat experience
  • Male
  • Injury free for 6-months

Exclusion criteria

  • Female
  • Any injury at baseline
  • Any international matches played during the between season break

Treatment and study plan

Normal stance width

Behavioral

Normal self-selected stance width when performing squat exercises.

Wide stance width

Behavioral

Increased stance with (by 20% over their own self-selected stance width) when performing squat exercises.

Primary outcomes

  1. 505 agility test

    Time frame: Baseline

    Test of 180 degree turning ability, measured using timing gates.

  2. 505 agility test

    Time frame: 8-weeks

    Test of 180 degree turning ability, measured using timing gates.

Secondary outcomes

  1. Body mass

    Time frame: Baseline

    Body mass using a weighing scale.

  2. Body mass

    Time frame: 8-weeks

    Body mass using a weighing scale.

  3. Sum of skinfold thickness

    Time frame: Baseline

    Skinfold thicknesses measured using callipers at eight sites according to the International Society for the Advancement of Kinanthropometry (ISAK) restricted profile (triceps, subscapular, biceps, iliac crest, supraspinal, abdominal, mid-thigh, and medial calf)

  4. Sum of skinfold thickness

    Time frame: 8-weeks

    Skinfold thicknesses measured using callipers at eight sites according to the International Society for the Advancement of Kinanthropometry (ISAK) restricted profile (triceps, subscapular, biceps, iliac crest, supraspinal, abdominal, mid-thigh, and medial calf)

  5. Three repetition maximum squat strength

    Time frame: Baseline

    The maximum squat weight that can be lifted for a total of three repetitions

  6. Three repetition maximum squat strength

    Time frame: 8-weeks

    The maximum squat weight that can be lifted for a total of three repetitions

  7. Counter movement jump height

    Time frame: Baseline

    The maximum height that can be jumped vertically, measured using a jump mat.

  8. Counter movement jump height

    Time frame: 8-weeks

    The maximum height that can be jumped vertically, measured using a jump mat.

Sponsors and collaborators

Lead sponsor

University of Central Lancashire

Other

Registry information

Official study title

The Effects of Increased vs. Traditional Squat Stance Width on Performance Indices in Elite Rugby League Players; an 8-week Pre-season Randomized Control Intervention

Important dates

Study start
2021
Primary completion
2021
Study completion
2022
First posted
Aug 18, 2022
Registry last updated
Sep 6, 2022

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.

Related clinical trials

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