Within- and between-session reliability of the isometric mid-thigh pull in young female athletes
Cronin, John B.
Myer, Gregory D.
Haff, G. Gregory
Lloyd, Rhodri S.
Lippincott, Williams & Wilkins
MetadataShow full item record
To investigate the within- and between-session reliability of the isometric mid-thigh pull (IMTP) in pre- and post-peak height velocity (PHV) female athletes. Nineteen pre- and nineteen post-PHV athletes performed bilateral IMTPs using a custom-designed isometric testing system. Participants attended three separate testing-sessions, and performed three trials within each session. Peak force, relative peak force, force at 30, 50, 90, 100, 150, 200, and 250 milliseconds, rate of force development (RFD) within time-specific bands, time to peak force (TPF), and time to peak rate of force development (TPRFD) were obtained for analysis. Within- and between-session reliability for each variable were calculated from repeated-measures analysis of variance, intraclass correlation coefficients (ICC), and coefficients of variation (CV) with 95% confidence intervals. Within- and between-session measures of absolute and relative peak force were found to be reliable for both pre-PHV (CV ≤ 9.4%, ICC ≥ 0.87) and post-PHV (CV ≤ 7.3%, ICC ≥ 0.92), but systematic bias was evident between-sessions in the pre-PHV group, from session 1 to 2. Analyses of force at the specific time-points revealed CVs between 19-37% and 5-24% for pre-PHV and post-PHV athletes respectively. Greater variability was evident in TPF, and all RFD-related variables for pre-PHV (CV = ≥38%) and post-PHV (CV = ≥27%) athletes respectively. The IMTP appears a reliable and safe method for evaluating peak force in young female athletes. Overall, post-PHV athletes were more reliable than pre-PHV athletes, with pre-PHV athletes needing additional familiarization to minimize the influence of systematic bias.
Journal of Strength & Conditioning Research;
Moeskops, S., Oliver, J.L., Read, P.J., Cronin, J.B., Myer, G.D., Haff, G.G. and Lloyd, R.S. (2018) 'Within-and between-session reliability of the isometric mid-thigh pull in young female athletes', Journal of Strength and Conditioning Research, 32(7):1892–1901. https://doi.org/10.1519/JSC.0000000000002566
This article was published in Journal of Strength and Conditioning Research on 15 March 2018 ahead of print, available at https://doi.org/10.1519/JSC.0000000000002566
NIAMS NIH HHS: U01 AR067997
- Sport Research Groups 
Showing items related by title, author, subject and abstract.
The effects of growth, maturation and training on strength and power development in young artistic female gymnasts Moeskops, Sylvia (Cardiff Metropolitan University, 2020)Female artistic gymnastics demands a combination of physical abilities including strength, power and speed to perform a diverse set of skills. Although gymnasts’ training typically commences early in the prepubertal ...
Dobbs, Ian J. (Cardiff Metropolitan University, 2020)Natural growth and maturation have been demonstrated to influence movement competency, strength, and power performance in males. However, little is known with regards to how maturational status influences these athletic ...
Effects of a 4-week neuromuscular training program on movement competency during the back-squat assessment in pre- and post- peak height velocity male athletes Dobbs, Ian J.; Oliver, Jon; Wong, Megan; Moore, Isabel; Myer, Greg; Lloyd, Rhodri S. (Lippincott, Williams & Wilkins, 2019-07-19)The back-squat assessment (BSA) is a novel movement screen to detect functional deficits; however, its sensitivity to detect meaningful changes in movement competency following exposure to short-term neuromuscular training ...