Raphael Scheuer1, Martin Friedrich. 1. Center of Excellence for Orthopedic Pain management Speising, Vienna, Austria. raphael.scheuer@oss.at
Abstract
OBJECTIVE: Evaluation of reliability of isometric strength measurements in the neck and trunk region and comparison of these measurements between patients with chronic neck pain and pain-free subjects. DESIGN: Nonrandomized controlled trial. SETTING: Institutional practice. PARTICIPANTS: Patients with neck pain (n=53) and pain-free persons (n=42) (mean age ± SD, 49.7±10.74 vs 48.7±12.02; women, 73% vs 71%). INTERVENTIONS: Strength of flexion, extension, and lateral flexion in the neck and trunk were measured. Each participant underwent 2 measurement passes on each of 2 examination days; 3 were performed by the same investigator, 1 by a second. MAIN OUTCOME MEASURES: Intrarater (short-term and long-term) and interrater reliability, differences in strength between both groups of probands. RESULTS: Reliability in both groups ranged from substantial to almost perfect (intraclass correlation coefficient: patients, .76-.89; control group, .80-.88). The patients' strength in the neck and trunk was significantly below that of the control group (P<.002). CONCLUSIONS: Isometric strength measurement is a reliable and feasible way to estimate the possible benefit of specific strengthening programs. Patients with chronic neck pain showed strength deficits in all measured regions.
OBJECTIVE: Evaluation of reliability of isometric strength measurements in the neck and trunk region and comparison of these measurements between patients with chronic neck pain and pain-free subjects. DESIGN: Nonrandomized controlled trial. SETTING: Institutional practice. PARTICIPANTS: Patients with neck pain (n=53) and pain-free persons (n=42) (mean age ± SD, 49.7±10.74 vs 48.7±12.02; women, 73% vs 71%). INTERVENTIONS: Strength of flexion, extension, and lateral flexion in the neck and trunk were measured. Each participant underwent 2 measurement passes on each of 2 examination days; 3 were performed by the same investigator, 1 by a second. MAIN OUTCOME MEASURES: Intrarater (short-term and long-term) and interrater reliability, differences in strength between both groups of probands. RESULTS: Reliability in both groups ranged from substantial to almost perfect (intraclass correlation coefficient: patients, .76-.89; control group, .80-.88). The patients' strength in the neck and trunk was significantly below that of the control group (P<.002). CONCLUSIONS: Isometric strength measurement is a reliable and feasible way to estimate the possible benefit of specific strengthening programs. Patients with chronic neck pain showed strength deficits in all measured regions.
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