Sandeep Kumar1, Joseph Singh1, Punam Pradhan2, Sanjeev Kumar3, Rohit K. Thapa4, , ,
1Department of Sports Biomechanics, Lakshmibai National Institute of Physical Education, Gwalior, India
2Department of Physical Education & Sports Sciences (Faculty of Inter-Disciplinary & Applied Sciences, University of Delhi), New Delhi, India
3Department of Physical Education, Central University of Punjab, Bathinda, India
4School of Physical Education and Sports, Rashtriya Raksha University, Gandhinagar, India
5
Validity and Reliability of an Inertial Measurement Unit (BTS G-Walk) for Measurement of Countermovement Jump Height: A pilot-study
J. Anthr. Sport Phys. Educ. 2023, 7(3), 19-22 | DOI: 10.26773/jaspe.230704
Abstract
This pilot-study aimed to analyse the validity and reliability of an inertial measurement unit (IMU; BTS G-walk) for measuring the countermovement jump (CMJ) height. Sixteen collegiate male students (age: 19.1 ± 1.4 years; height: 172.7 ± 5.2 cm, body mass: 64.1 ± 6.7 kg) participated in the study. Three trials were conducted for CMJ with the intent of achieving maximal height. The CMJs were concurrently assessed with the IMU and My Jump 2 application. The intercorrelation coefficient (ICC), Pearson correlation (r), and paired t test were used to assess validity. In addition, the ICC, Cronbach alpha (ɑ), and coefficient of variation (CV) were used to assess withinsession reliability. The ICC between both devices for measurement of jump height was excellent (ICC = 0.96 [0.90 – 0.99]) with large correlation (r = 0.973). Paired t test showed no difference between both measurement devices. Furthermore, within-session ICC for both devices were good and excellent (ICC = 0.92 [0.82 – 0.97] for IMU; ICC = 0.97 [0.92 – 0.99] for My jump application) and reported acceptable CV (<10%). In conclusion the findings of current study suggest that IMU (BTS G-walk) is a valid and reliable tool for assessment of CMJ height.
Keywords
plyometric exercise, exercise test, exercise, human activities, athletic performance
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