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

Sports Performance Clinical Trial

Official 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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05505786
• Other study ID #: Squat stance width
• Status: Completed
• Phase: N/A
• Start date: October 1, 2021
• Est. completion date: April 1, 2022

Study information

• Verified date: August 2022
• Source: University of Central Lancashire
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 26
• Est. completion date: April 1, 2022
• Est. primary completion date: December 1, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 35 Years

Eligibility

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

Related Conditions & MeSH terms

• Sports Performance

Intervention

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

Locations

Country	Name	City	State
United Kingdom	University of Central Lancashire	Preston	Lancashire

Sponsors (1)

Lead Sponsor	Collaborator
University of Central Lancashire

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	505 agility test	Test of 180 degree turning ability, measured using timing gates.	Baseline
Primary	505 agility test	Test of 180 degree turning ability, measured using timing gates.	8-weeks
Secondary	Body mass	Body mass using a weighing scale.	Baseline
Secondary	Body mass	Body mass using a weighing scale.	8-weeks
Secondary	Sum of skinfold thickness	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)	Baseline
Secondary	Sum of skinfold thickness	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)	8-weeks
Secondary	Three repetition maximum squat strength	The maximum squat weight that can be lifted for a total of three repetitions	Baseline
Secondary	Three repetition maximum squat strength	The maximum squat weight that can be lifted for a total of three repetitions	8-weeks
Secondary	Counter movement jump height	The maximum height that can be jumped vertically, measured using a jump mat.	Baseline
Secondary	Counter movement jump height	The maximum height that can be jumped vertically, measured using a jump mat.	8-weeks