Test–Retest Reliability and Concurrent Validity of the 30 second Sit to Stand Test in Adolescents

ABSTRACT

The purpose of our study was to assess the test–retest reliability and concurrent validity of the 30 sec Sit to Stand test in a sample of adolescents. We recruited 30 male (58%) and 22 female (42%) participants (mean age = 15.77 years ± 0.46). Participants completed the 30-sec Sit to Stand and standing long jump tests on two occasions separated by 1 week. The rank order repeatability of the Sit to Stand test for the entire group was good (ICC = 0.84, 95% CI’s [0.71 to 0.91]), systematic error was low (1.7 repetitions ± 2.9), and the typical error between tests was 2.1 repetitions (95% CI’s 1.73 to 2.55). Sit to Stand results were significantly associated with lower body power (r = 0.55, p < .001). Our study demonstrated that the 30-sec Sit to Stand test has moderate-to-high test–retest reliability and acceptable concurrent validity in a population of adolescents.

KEYWORDS:

• sit to Stand
• muscular fitness
• field-based testing
• lower body
• endurance
• standing Long Jump

Acknowledgments

We would like to acknowledge the work of Angeliek Verdonschot, Levi Wade, and Berit Follong for their assistance with data collection.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author contributions

KR, NR, MM, and DRL conceptualized and designed the study. KR and NR collected data and drafted the initial manuscript. KR and DRL carried out the data analyses and reviewed and revised the manuscript. FBO critically reviewed the manuscript, advised on statistical corrections, and added intellectual content to the manuscript. All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.

Data sharing statement

Data relevant to the study are available on reasonable request to the corresponding author.

Ethics approval

This project has been approved by the University of Newcastle’s Ethics committee, Approval number [H-2019–0415] and the Maitland/Newcastle Catholic Schools office.

Additional information

Funding

Funding was generously provided by HMRI philanthropic donations. Grant number: G19011491. DRL is supported by a National Health and Medical Research Council Research Fellowship (APP1154507)