Validity of the Baiobit Inertial Measurements Unit for the Assessment of Vertical Double- and Single-Leg Countermovement Jumps in Athletes

Federica Camuncoli, Luca Barni (), Sebastiano Nutarelli, Jacopo Emanuele Rocchi, Matteo Barcillesi, Irene Di Dio, Andrea Sambruni and Manuela Galli
Additional contact information
Federica Camuncoli: Department of Electronics Information Technology and Bioengineering, Politecnico di Milano, 20133 Milan, Italy
Luca Barni: Department of Physiotherapy, Faculty of Health Sciences, University of Malaga, 29071 Malaga, Spain
Sebastiano Nutarelli: Service of Orthopaedics and Traumatology, Department of Surgery, (Ente Ospedaliero Cantonale) EOC, 6900 Lugano, Switzerland
Jacopo Emanuele Rocchi: Department of Movement, Human and Health Sciences, University of Rome Foro Italico, 00135 Rome, Italy
Matteo Barcillesi: Department of Electronics Information Technology and Bioengineering, Politecnico di Milano, 20133 Milan, Italy
Irene Di Dio: Department of Electronics Information Technology and Bioengineering, Politecnico di Milano, 20133 Milan, Italy
Andrea Sambruni: Department of Medicine, Surgery and Neuroscience, Università degli Studi di Siena, 53100 Siena, Italy
Manuela Galli: Department of Electronics Information Technology and Bioengineering, Politecnico di Milano, 20133 Milan, Italy

IJERPH, 2022, vol. 19, issue 22, 1-12

Abstract: Jump tests are simple, quick to execute, and considered the most reliable tool to measure lower extremities power and explosiveness in athletes. Wearable inertial sensors allow the assessment of jumping performance on any surface. The validity of inertial sensors measurements is a pivotal prerequisite to reliably implement their utilization in the clinical practice. Twenty-seven athletes (20 M/7 F, age: 27 ± 7 years old) performed five double-leg countermovement jumps (CMJs) and three single-leg CMJs per side with their hands on their hips. Jump height was measured/computed simultaneously with the optoelectronic system, force platforms, and the Baiobit inertial sensor system. The athletes completed the international physical activity questionnaire (IPAQ). When comparing the methods (Baiobit vs. force platforms), a non-statistically significant bias of 1.8 cm was found for two-leg CMJs and −0.6 cm for single-leg CMJs. The intraclass correlation coefficients (ICCs) was “excellent” for double-leg CMJs (ICC = 0.92, 95% CI = 0.89–0.94) and “good” for single-leg CMJs (ICC = 0.89, 95% CI = 0.85–0.91). When comparing the methods (Baiobit vs. force platforms + optoelectronic system), a non-statistically significant bias of −0.9 cm was found for two-leg CMJs and −1.2 cm for single-leg CMJs. The intraclass correlation coefficient (ICC) was “good” for both double-leg CMJs (ICC = 0.80, 95% CI = 0.73–0.85) and for single-leg CMJs (ICC = 0.86, 95% CI = 0.80–0.89). Baiobit tends to overestimate double- and single-leg CMJ height measurements; however, it can be recommended in the world of rehabilitation and sport analysis.

Keywords: countermovement jump; vertical jump; inertial sensors; single-leg jump; Bland–Altman; Baiobit (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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