Mohammad Reza Pourahmadi1, Rasool Bagheri2, Morteza Taghipour3, Ismail Ebrahimi Takamjani1, Javad Sarrafzadeh1, Mohammad Ali Mohseni-Bandpei4. 1. Department of Physiotherapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Madadkaran All., Shahnazari St., Madar Sq., Mirdamad Blvd., Tehran, 1545913187, Iran. 2. Department of Physiotherapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Madadkaran All., Shahnazari St., Madar Sq., Mirdamad Blvd., Tehran, 1545913187, Iran; Neuromuscular Rehabilitation Research Center, Department of Physiotherapy, Semnan University of Medical Sciences, Basij Blvd., Semnan, 3519899951, Iran. 3. Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Evin, Koodakyar Ave., Tehran, 1985713831, Iran. Electronic address: taghipour-morteza@hotmail.com. 4. Pediatric Neurorehabilitation Research Center, University of Social Welfare and Rehabilitation Sciences, Evin, Koodakyar Ave., Tehran, 1985713831, Iran; University Institute of Physical Therapy, Faculty of Allied Health Sciences, University of Lahore, Lahore, 54000, Pakistan.
Abstract
BACKGROUND CONTEXT: Measurement of cervical spine range of motion (ROM) is often considered to be an essential component of cervical spine physiotherapy assessment. PURPOSE: This study aimed to investigate the reliability and validity of an iPhone application (app) (Goniometer Pro) for measuring active craniocervical ROM (ACCROM) in patients with non-specific neck pain. STUDY DESIGN/ SETTING: A cross-sectional study was conducted at the musculoskeletal biomechanics laboratory located at Iran University of Medical Sciences. PATIENT SAMPLE: Forty non-specific neck pain patients participated in this study. OUTCOME MEASURES: The outcome measure was the ACCROM, including flexion, extension, lateral flexion, and rotation. METHOD: Following the recruitment process, ACCROM was measured using a universal goniometer (UG) and iPhone 7 app. Two blinded examiners each used the UG and iPhone to measure ACCROM in the following sequences: flexion, extension, lateral flexion, and rotation. The second (2 hours later) and third (48 hours later) sessions were carried out in the same manner as the first session. Intraclass correlation coefficient (ICC) models were used to determine the intra-rater and inter-rater reliability. The Pearson correlation coefficients were used to establish concurrent validity of the iPhone app. Minimum detectable change at the 95% confidence level (MDC95) was also computed. RESULTS: Good intra-rater and inter-rater reliability was demonstrated for the goniometer with ICC values of ≥0.66 and ≥0.70 and the iPhone app with ICC values of ≥0.62 and ≥0.65, respectively. The MDC95 ranged from 2.21° to 12.50° for the intra-rater analysis and from 3.40° to 12.61° for the inter-rater analysis. The concurrent validity between the two instruments was high, with r valuesof ≥0.63. The magnitude of the differences between the UG and iPhone app values (effect sizes) was small, with Cohen d values of ≤0.17. CONCLUSIONS: The iPhone app possesses good reliability and high validity. It seems that this app can be used for measuring ACCROM.
BACKGROUND CONTEXT: Measurement of cervical spine range of motion (ROM) is often considered to be an essential component of cervical spine physiotherapy assessment. PURPOSE: This study aimed to investigate the reliability and validity of an iPhone application (app) (Goniometer Pro) for measuring active craniocervical ROM (ACCROM) in patients with non-specific neck pain. STUDY DESIGN/ SETTING: A cross-sectional study was conducted at the musculoskeletal biomechanics laboratory located at Iran University of Medical Sciences. PATIENT SAMPLE: Forty non-specific neck painpatients participated in this study. OUTCOME MEASURES: The outcome measure was the ACCROM, including flexion, extension, lateral flexion, and rotation. METHOD: Following the recruitment process, ACCROM was measured using a universal goniometer (UG) and iPhone 7 app. Two blinded examiners each used the UG and iPhone to measure ACCROM in the following sequences: flexion, extension, lateral flexion, and rotation. The second (2 hours later) and third (48 hours later) sessions were carried out in the same manner as the first session. Intraclass correlation coefficient (ICC) models were used to determine the intra-rater and inter-rater reliability. The Pearson correlation coefficients were used to establish concurrent validity of the iPhone app. Minimum detectable change at the 95% confidence level (MDC95) was also computed. RESULTS: Good intra-rater and inter-rater reliability was demonstrated for the goniometer with ICC values of ≥0.66 and ≥0.70 and the iPhone app with ICC values of ≥0.62 and ≥0.65, respectively. The MDC95 ranged from 2.21° to 12.50° for the intra-rater analysis and from 3.40° to 12.61° for the inter-rater analysis. The concurrent validity between the two instruments was high, with r valuesof ≥0.63. The magnitude of the differences between the UG and iPhone app values (effect sizes) was small, with Cohen d values of ≤0.17. CONCLUSIONS: The iPhone app possesses good reliability and high validity. It seems that this app can be used for measuring ACCROM.
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