• Eur Spine J · Aug 2019

    Relationship between patient-based scoring systems and the activity level of patients measured by wearable activity trackers in lumbar spine disease.

    • Masahiro Inoue, Sumihisa Orita, Kazuhide Inage, Miyako Suzuki, Kazuki Fujimoto, Yasuhiro Shiga, Hirohito Kanamoto, Koki Abe, Hideyuki Kinoshita, Masaki Norimoto, Tomotaka Umimura, Takashi Sato, Masashi Sato, Masahiro Suzuki, Keigo Enomoto, Yawara Eguchi, Yasuchika Aoki, Tsutomu Akazawa, Yohei Kawasaki, and Seiji Ohtori.
    • Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan. masain_96@hotmail.com.
    • Eur Spine J. 2019 Aug 1; 28 (8): 1804-1810.

    PurposesTo evaluate whether a relationship exists between patient-based scoring systems and the activity level of patients with low back pain (LBP) by using wearable activity trackers, and to determine whether activity level was affected by patient factors.MethodsThe subjects were 66 patients with LBP. The physical activity of participants was objectively evaluated using the Micro-Motion logger (Actigraph). The activity level was analyzed with the mean active count of the proportional-integrating mode (PMAC) and zero-crossing mode. Clinical symptoms were evaluated using the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ), Roland-Morris Disability Questionnaire, the Oswestry Disability Index, and visual analog scale (VAS). The relationships between each item of the patient-based questionnaire and activity level, and the influence of individual factors (age, sex, body mass index [BMI], low back pain, and muscle mass) on the activity level were evaluated.ResultsIn each domain of the JOABPEQ, lumbar spine dysfunction and social life dysfunction were correlated with PMAC (r = 0.327 and 0.321, respectively). The low back pain VAS scores were correlated with PMAC (r = - 0.246). Multiple regression analysis shows that individual factors affecting the activity level of patients with LBP were sex, BMI, low back pain, and muscle mass in PMAC (p < 0.01).ConclusionsSome domains of the questionnaires were correlated with activity level, but others were not. Additionally, the activity level of patients with LBP was affected by sex, BMI, LBP, and skeletal muscle mass index. These slides can be retrieved under Electronic Supplementary Material.

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