2018 Volume 33 Issue 5 Pages 733-737
[Purpose] To clarify the correlation between the lumbar cross-sectional area of the multifidus muscle (LM) at each vertebral level on the left and right sides and body composition. [Participants and Methods] A total of 48 healthy young males were studied. Their LM at each level on both sides were measured using an ultrasonic diagnostic system. Similarly, their body weight, BMI, FMI, FFMI, SMI, and skeletal, left and right upper limb, trunk, and left and right lower limb muscle masses were measured using InBody to calculate their body composition. Their height was also measured using a height meter. [Results] The body weight, height, and right leg muscle mass were positively correlated with LM at all levels on both sides. The BMI was positively correlated with LM at L4–5 and L3–5 on the left and right sides, respectively. The FFMI was positively correlated with LM at L4 on the left side. The SMI and left leg muscle mass were positively correlated with LM at all levels and L2–5 on the left and right sides, respectively. The left and right arm and trunk muscle masses were positively correlated with LM at all levels and L3–5 on the left and right sides, respectively. Such a correlation was also observed between the skeletal muscle mass and LM at all levels on the left and at L1 and L3–5 on the right side. [Conclusion] The relationship between the LM on the left/right side and body composition may vary among different vertebral levels.
