Natalia Romero-Franco1, Pedro Jiménez-Reyes2, Jorge Miguel González-Hernández3, Juan Carlos Fernández-Domínguez4. 1. Nursing and Physiotherapy Department, University of the Balearic Islands, E-07122, Palma de Mallorca, Spain. Electronic address: narf52@gmail.com. 2. Centre for Sport Studies, Rey Juan Carlos University, E-28943, Madrid, Spain. Electronic address: peterjr49@hotmail.com. 3. Faculty of Health Sciences, Universidad Europea de Canarias, E-38300, La Orotava, Spain. Electronic address: jormigohe91@gmail.com. 4. Nursing and Physiotherapy Department, University of the Balearic Islands, E-07122, Palma de Mallorca, Spain. Electronic address: jcarlos.fernandez@uib.es.
Abstract
OBJECTIVE: To analyze the concurrent validity and reliability of an iPhone application for assessing range of motion (ROM) and joint position sense (JPS) in ankle and knee joints. DESIGN: Cross-sectional study. SETTING: Sport laboratory. PARTICIPANTS: Twenty healthy and physically active volunteers. INTERVENTIONS: All participants performed a ROM and a JPS test in ankle and knee joints, which were simultaneously evaluated with photo-analysis and the iPhone application. MAIN OUTCOMES MEASURES: A total of 80 angles were obtained with the iPhone app and the photo-analysis and compared for concurrent validity. Reliability was evaluated through re-scoring of images with the iPhone app by two different testers. RESULTS: Very high correlation was observed between both methods for ankle and knee ROM and knee JPS (r > 0.90), and high correlation for ankle JPS (r = 0.71-0.90), while Bland-Altman plots showed absolute agreement for all the variables. Inter- and intra-tester reliability was perfect for all the variables (ICC > 0.81), except for the inter-tester reliability of ankle JPS, which was substantial (ICC = 0.61-0.81). CONCLUSIONS: This new iPhone application is valid and reliable for measuring ankle and knee ROM and JPS, although special attention is needed during ankle evaluation to avoid errors.
OBJECTIVE: To analyze the concurrent validity and reliability of an iPhone application for assessing range of motion (ROM) and joint position sense (JPS) in ankle and knee joints. DESIGN: Cross-sectional study. SETTING: Sport laboratory. PARTICIPANTS: Twenty healthy and physically active volunteers. INTERVENTIONS: All participants performed a ROM and a JPS test in ankle and knee joints, which were simultaneously evaluated with photo-analysis and the iPhone application. MAIN OUTCOMES MEASURES: A total of 80 angles were obtained with the iPhone app and the photo-analysis and compared for concurrent validity. Reliability was evaluated through re-scoring of images with the iPhone app by two different testers. RESULTS: Very high correlation was observed between both methods for ankle and knee ROM and knee JPS (r > 0.90), and high correlation for ankle JPS (r = 0.71-0.90), while Bland-Altman plots showed absolute agreement for all the variables. Inter- and intra-tester reliability was perfect for all the variables (ICC > 0.81), except for the inter-tester reliability of ankle JPS, which was substantial (ICC = 0.61-0.81). CONCLUSIONS: This new iPhone application is valid and reliable for measuring ankle and knee ROM and JPS, although special attention is needed during ankle evaluation to avoid errors.
Authors: Alejandro Caña-Pino; Luís Espejo-Antúnez; José Carmelo Adsuar; María Dolores Apolo-Arenas Journal: Int J Environ Res Public Health Date: 2021-03-03 Impact factor: 3.390