EFFECTS OF HANDEDNESS ON CERVICAL SIDE FLEXION IN ADULTS

Hand dominance decides the involvement of extremities during activities of daily living therefore each side of the body undergoes different amounts of stress and load which leads to varying degenerative changes. When diagnosing musculoskeletal problems and tracking prognosis, range of motion (ROM) assessments are frequently used. Therefore, ROM is a helpful clinical indicator of tailored treatment plans. Current rehabilitation literature suggests to goal for equal ROM at the effected joint as contralateral side which may differs greatly based on the dominance of the extremity. The aim of the project is finding the average readings for cervical range of motion (CROM) for lateral flexion in left and right-hand dominant population respectively. Demographic details of 308 participants of both genders (age 18-28 years) were documented which were divided into two groups based on their hand dominance i.e. left and right, subjects were informed about the procedure after which the ranges for cervical lateral flexion on both sides were recorded in degrees using a single inclinometer method. The normative reference value of left cervical lateral flexion (LCLF) & right cervical lateral flexion (RCLF) of participants with right hand dominance which is stated in Mean ± SD. The LCLF & RCLF’s-mean and ranges are expressed to be 42.272 (26.00-62.00) & 47.344 (31.00-71.00) degrees respectively. To get the precise evaluation, the geometric mean (95%CI) was employed, which is as follows: 41.616 (41.088-43.457) & 46.641 (46.045-48.642).
The normative reference value of LCLF & RCLF of participants with left hand dominance which is stated in Median (IQR). The LCLF & RCLF median and ranges are expressed to be 51.00 (32.00-70.00) & 47.00 (32.00-69.00) degrees respectively. To get the precise evaluation, the geometric mean (95%CI) was employed, which is as follows: 49.787 (49.175-51.421) & 47.866 (47.225-49.605). The research was effective in determining the normative reference value of cervical lateral flexion in subjects aged 18 to 28 with respect to hand dominance.

手部优势决定日常活动中四肢的参与程度，因此身体两侧承受的压力和负荷量各异，从而导致不同的退行性变化。在诊断骨骼肌肉问题及追踪预后过程中，关节活动度（ROM）评估常常被采用。因此，ROM成为定制治疗方案的有益临床指标。当前的康复文献建议，目标是在受影响的关节达到与对侧相等的关节活动度，这可能与四肢的优势差异显著。本项目旨在寻找左右手优势人群分别的颈椎关节活动度（CROM）侧屈的平均读数。记录了308名参与者（年龄在18至28岁之间，男女各半）的的人口统计学细节，根据他们的手部优势将其分为两组，即左撇子和右撇子。在告知参与者程序之后，使用单倾斜仪法记录了两侧颈椎侧屈的关节活动度，并以度为单位进行记录。对于右手优势的参与者的左颈椎侧屈（LCLF）和右颈椎侧屈（RCLF）的规范性参考值以均值±标准差表示。LCLF和RCLF的均值和范围分别为42.272（26.00-62.00）度和47.344（31.00-71.00）度。为了获得精确评估，采用了几何均值（95%CI），结果如下：41.616（41.088-43.457）度和46.641（46.045-48.642）度。为了获得精确评估，采用了几何均值（95%CI），结果如下：49.787（49.175-51.421）度和47.866（47.225-49.605）度。研究有效地确定了18至28岁年龄段的受试者，根据手部优势确定颈椎侧屈的规范性参考值。