Sports PerformanceNCT05505786
The Effects of Increased vs. Traditional Squat Stance Width on Performance Indices in Elite Rugby League Players
A study testing Normal stance width and Wide stance width in people with Sports Performance, run by University of Central Lancashire at 1 site in United Kingdom.
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. Read more about this study
- Who is it for?
- Ages 18 to 35 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Sports Performance
- What is being tested?
- Normal stance width and Wide stance width
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 26 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- 1 Oct 2021to 1 Apr 2022
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 35 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Rugby league player contracted to a professional Super League team
- 5-years minimum of back squat experience
- Male
- Injury free for 6-months
Who cannot join
- Female
- Any injury at baseline
- Any international matches played during the between season break
Trial locations and contacts
1 site in 1 country.
United Kingdom1 site
University of Central Lancashire
Preston, Lancashire, PR4 0PE
About this study
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
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.
- Conditions
- Sports Performance
- Being tested
- Normal stance width, Wide stance width
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Normal stance widthBehavioural
Normal self-selected stance width when performing squat exercises.
Wide stance widthBehavioural
Increased stance with (by 20% over their own self-selected stance width) when performing squat exercises.
| Study group | Role | What they receive |
|---|---|---|
| Normal stance width | Active comparator | Those assigned to this group will complete their pre-season training as normal i.e. when performing their squat exercises they will do so using their habitual (self-selected) stance width. Receives: Behavioral: Normal stance width |
| Wide stance width | Experimental | Those assigned to this (i.e. experimental) group will also complete their pre-season training as normal, the only exception will be that when performing their squat exercises they will increase their stance width by 20% compared to their self-selected stance width. Receives: Behavioral: Wide stance width |
What is being measured
The primary outcome is the main question the study is designed to answer.
505 agility test
Test of 180 degree turning ability, measured using timing gates.
Measured: Baseline
505 agility test
Test of 180 degree turning ability, measured using timing gates.
Measured: 8-weeks
Secondary outcomes (8)
Body mass
Body mass using a weighing scale.
Measured: Baseline
Body mass
Body mass using a weighing scale.
Measured: 8-weeks
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)
Measured: Baseline
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)
Measured: 8-weeks
Three repetition maximum squat strength
The maximum squat weight that can be lifted for a total of three repetitions
Measured: Baseline
Three repetition maximum squat strength
The maximum squat weight that can be lifted for a total of three repetitions
Measured: 8-weeks
Counter movement jump height
The maximum height that can be jumped vertically, measured using a jump mat.
Measured: Baseline
Counter movement jump height
The maximum height that can be jumped vertically, measured using a jump mat.
Measured: 8-weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Aug 2022
- Study start1 Oct 2021
- Primary completion1 Dec 2021
- Study completion1 Apr 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sports PerformanceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Stratified to include similar number of forward and backs in each arm.
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 26 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Central Lancashire
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jonathan Sinclair, University of Central Lancashire
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05505786
- Sponsor's protocol ID
- Squat stance width
- Status last verified
- Aug 2022
- First submitted
- 16 Aug 2022
- Last updated
- 6 Sep 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Sep 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- 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
- ClinicalTrials.gov ID
- NCT05505786
- Acronym / sponsor ID
- Squat stance width
- Conditions
- Sports Performance
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 26 participants (actual)
- Lead sponsor
- University of Central LancashireUniversity, hospital or other
- Study start
- 1 Oct 2021 (actual)
- Primary completion
- 1 Dec 2021 (actual)
- Study completion
- 1 Apr 2022 (actual)
- First posted
- 18 Aug 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (investigator)
- Number of arms
- 2
- Model description
- Stratified to include similar number of forward and backs in each arm.
| Arm | Type | Receives |
|---|---|---|
| Normal stance width | Active comparator | Behavioral: Normal stance widthThose assigned to this group will complete their pre-season training as normal i.e. when performing their squat exercises they will do so using their habitual (self-selected) stance width. |
| Wide stance width | Experimental | Behavioral: Wide stance widthThose assigned to this (i.e. experimental) group will also complete their pre-season training as normal, the only exception will be that when performing their squat exercises they will increase their stance width by 20% compared to their self-selected stance width. |
Who may qualify
- Ages
- 18 to 35 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Rugby league player contracted to a professional Super League team
- 5-years minimum of back squat experience
- Male
- Injury free for 6-months
Key exclusion criteria (3 listed)
- Female
- Any injury at baseline
- Any international matches played during the between season break
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Normal stance widthNormal self-selected stance width when performing squat exercises. | Behavioural | Normal stance width |
| Wide stance widthIncreased stance with (by 20% over their own self-selected stance width) when performing squat exercises. | Behavioural | Wide stance width |
Primary outcome
505 agility test
Time frame: Baseline
Test of 180 degree turning ability, measured using timing gates.
505 agility test
Time frame: 8-weeks
Test of 180 degree turning ability, measured using timing gates.
8 secondary outcomes
Body mass
Time frame: Baseline
Body mass
Time frame: 8-weeks
Sum of skinfold thickness
Time frame: Baseline
Sum of skinfold thickness
Time frame: 8-weeks
Three repetition maximum squat strength
Time frame: Baseline
Three repetition maximum squat strength
Time frame: 8-weeks
Counter movement jump height
Time frame: Baseline
Counter movement jump height
Time frame: 8-weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Sep 2022.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Normal stance width and Wide stance width in people with Sports Performance, run by University of Central Lancashire at 1 site in United Kingdom.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 6 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
505 agility test (time frame: Baseline). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Sep 2022.