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Trial registered on ANZCTR


Registration number
ACTRN12622001526763
Ethics application status
Approved
Date submitted
1/12/2022
Date registered
9/12/2022
Date last updated
9/12/2022
Date data sharing statement initially provided
9/12/2022
Type of registration
Retrospectively registered

Titles & IDs
Public title
Determining the reliability and validity of two measures of lower body muscular fitness for adolescents
Scientific title
Test-retest reliability of field-based measures of lower body muscular fitness in healthy Year 10 students
Secondary ID [1] 308533 0
Nil known
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
muscular fitness 328365 0
Condition category
Condition code
Musculoskeletal 325403 325403 0 0
Normal musculoskeletal and cartilage development and function
Public Health 325404 325404 0 0
Health promotion/education

Intervention/exposure
Study type
Observational
Patient registry
False
Target follow-up duration
Target follow-up type
Description of intervention(s) / exposure
NAME: Test-retest reliability of the 30-second sit-to-stand squat test as a measure of lower body muscular fitness.
WHY: To determine if the 30-second sit-to-stand squat test could be used as a reliable field-based test when assessing adolescents' lower body muscular fitness.
WHAT: Participants completed the assessments on two occasions separated by 1 week. On each occasion, students completed the 30-second sit-to-stand test, the standing long jump test, and anthropometric tests of height and weight.
WHO: Five trained research assistants completed all assessments and measurements were undertaken using the same instruments on each occasion.
HOW: Anthropometric evaluations of height, weight and lower leg length were completed first, followed by participation in the sit to stand test and standing long jump.
Height was measured to the nearest 0.1cm using a portable stadiometer
Body mass was measured in light clothing without shoes using a portable digital scale to the nearest 0.1kg. Students were blinded to this procedure, standing on the scales backwards with the digital display only viewable by the research assistant.
Lower leg length was measured using a ruler from the heel to the popliteal crease behind the student's knee. At no stage where any of the researchers physically touching the participants. All measurements were taken using a ruler and a flat stick to align the measurement with the popliteal crease.
The standing long jump test is administered outdoors on a flat, dry grass surface. Participants begin with their toes behind a line marked at 0 cm and perform a maximal long jump, taking off and landing with two feet. The test was performed twice, separated by a rest period of at least 15 seconds.
The 30-second sit-to-stand test requires participants to complete as many squats as possible in 30 seconds, each time touching the bench of height 44cm at the end of the squat.
HOW: On each occasion, researchers made assessments in a face-to-face mode. The duration of each testing session was approximately 2 hours. The total duration of the study was 7 days. Students were assessed one on one at each of the four tests (Height, weight, sit-to-stand test and standing long jump)
WHERE: The tests were administered prior to students’ participation in their allocated school sport time allowing for consistency of time and venue. It was an outdoor venue with an undercover flat area available for height and weight.
Intervention code [1] 324975 0
Not applicable
Comparator / control treatment
the 30 second sit to stand squat test will be compared to the standing long jump test
Control group
Active

Outcomes
Primary outcome [1] 333261 0
Test-retest reliability of the 30-second sit-to-stand squat test and standing long jump test will be assessed using the Intraclass correlation coefficient and rank order repeatability statistics
Timepoint [1] 333261 0
Comparison between tests completed on the day of enrolment and at 7 days post-enrolment. The primary time point is day 7.
Primary outcome [2] 333291 0
Construct validity of the 30 second sit to stand squat test assessed by comparison to the current gold standard standing long jump test using factor analysis.
Timepoint [2] 333291 0
Comparison between tests completed on the day of enrolment and at 7 days post-enrolment. The primary time point is day 7.
Secondary outcome [1] 416386 0
The secondary outcome of this study was to determine if when performance in the sit to stand test was combined with height and weight could predict scores in the standing long jump.
Timepoint [1] 416386 0
Comparison between tests completed on the day of enrolment and at 7 days post-enrolment.

Eligibility
Key inclusion criteria
Year 10 students
Healthy population
Minimum age
14 Years
Maximum age
17 Years
Sex
Both males and females
Can healthy volunteers participate?
Yes
Key exclusion criteria
Physical disabilities preventing jumping

Study design
Purpose
Screening
Duration
Cross-sectional
Selection
Defined population
Timing
Prospective
Statistical methods / analysis
Statistical analyses will be completed in IBM SPSS Statistics, version 23.0 (SPSS Inc., IBM Company Armonk, NY, USA). Three types of reliability will be assessed: rank order repeatability (Spearmans correlation coefficient), change in mean and participant variation.

Recruitment
Recruitment status
Stopped early
Data analysis
Data collected is being analysed
Reason for early stopping/withdrawal
Lack of funding/staff/facilities
Date of first participant enrolment
Anticipated
Actual
5/10/2020
Date of last participant enrolment
Anticipated
Actual
21/10/2020
Date of last data collection
Anticipated
Actual
11/11/2020
Sample size
Target
97
Accrual to date
Final
52
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment postcode(s) [1] 39082 0
2320 - Maitland

Funding & Sponsors
Funding source category [1] 312778 0
Charities/Societies/Foundations
Name [1] 312778 0
Hunter Medical Research Institute
Country [1] 312778 0
Australia
Primary sponsor type
University
Name
University of Newcastle
Address
University of Newcastle, Callaghan Campus, University Drive, Callaghan, NSW 2308, Australia
Country
Australia
Secondary sponsor category [1] 314412 0
None
Name [1] 314412 0
Address [1] 314412 0
Country [1] 314412 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 312071 0
The University of Newcastle Human Research Ethics Committee
Ethics committee address [1] 312071 0
Research & Innovation Services
Research Integrity Unit
University Drive
The University of Newcastle
Callaghan NSW 2308
Ethics committee country [1] 312071 0
Australia
Date submitted for ethics approval [1] 312071 0
05/02/2020
Approval date [1] 312071 0
05/05/2020
Ethics approval number [1] 312071 0
H-2019-0415

Summary
Brief summary
The main purpose of this study was to analyse the test-retest reliability of the 30 second sit to stand squat test as a measure of lower body muscular fitness. Secondary outcomes were to assess the validity of the 30 second sit to stand test compared to the highly reliable standing long jump test. Only a few field based tests are available to assess muscular fitness in youth and the 30 second sit to stand test may be a useful addition to the field. Participants
aged 14-17 years completed the assessments on two occasions separated by 1 week. On each occasion students completed the 30 second sit to stand test and the standing long jump test as well as anthropometric tests of height and weight.
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 123362 0
Mrs Katie Robinson
Address 123362 0
Katie Robinson
Centre for Active living and learning
Ring Road, Callaghan NSW 2308
Country 123362 0
Australia
Phone 123362 0
+61412578572
Fax 123362 0
Email 123362 0
[email protected]
Contact person for public queries
Name 123363 0
Katie Robinson
Address 123363 0
Katie Robinson
Centre for Active living and learning
Ring Road, Callaghan NSW 2308
Country 123363 0
Australia
Phone 123363 0
+61412578572
Fax 123363 0
Email 123363 0
[email protected]
Contact person for scientific queries
Name 123364 0
Katie Robinson
Address 123364 0
Katie Robinson
Centre for Active living and learning
Ring Road, Callaghan NSW 2308
Country 123364 0
Australia
Phone 123364 0
+61412578572
Fax 123364 0
Email 123364 0
[email protected]

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
What data in particular will be shared?
All de-identified data is available
When will data be available (start and end dates)?
Data is available on request to the principal investigator. (From present date 1/12/2022. Available for 5 years after publication)
Available to whom?
Anyone who requests data
Available for what types of analyses?
All
How or where can data be obtained?
Contact via email
[email protected]


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.