Puagprakong Pailin, Kanjanasilanont Aris, Brady Wannaporn S, Sornkaew Kanphajee
Department of Rehabilitation and Movement Science, Faculty of Sports Science, Kasetsart University, Nakhon Pathom 73140, Thailand.
Department of Health and Sport Science, Faculty of Education, Mahasarakham University, Mahasarakham 44150, Thailand.
Hong Kong Physiother J. 2025 Jun;45(1):35-43. doi: 10.1142/S1013702525500039. Epub 2024 Jul 23.
BACKGROUND/OBJECTIVE: Office workers are exposed to high levels of sedentary time. This sedentary time may have impacts on office workers which affect the normal movement patterns of sitting position caused by muscle tightness and weakness. The aims of this study were to investigate postural changes in lower crossed syndrome (LCS) on a head tilt angle (HTA), craniovertebral angle (CVA), sagittal shoulder angle (SSA), and trunk flexion angle (TFA) during 30 min sitting in female office workers.
Fifty-four office workers who use computer for at least 4 h/day, work for at least 5 years were recruited. All subjects were evaluated their posture, muscle length and power and assigned into three groups: healty group ( ), LCS type A ( ), and LCS type B ( ). Testing posture was 30 min sitting at computer workstation and typing on standardized with video record. Then three pictures were captured at four points of time from VDO records. All angles were measured two-way mixed ANOVA and post-hoc Tukey test was used to analyse the data.
Subjects with LCS type B have less CVA, SSA, and TFA than healthy and participants with LCS type A significantly during sitting at 0, 10, 20 and 30 min. There was no significant difference in HTA among the three groups.
Subjects with LCS type B showed significant the upper body posture changes compared with other groups.
背景/目的：办公室职员长时间久坐。这种久坐行为可能会对办公室职员产生影响，因肌肉紧张和无力而影响正常的坐姿运动模式。本研究的目的是调查女性办公室职员在30分钟坐姿期间，下交叉综合征（LCS）在头部倾斜角度（HTA）、颅椎角（CVA）、矢状肩角（SSA）和躯干屈曲角（TFA）方面的姿势变化。
招募了54名每天使用电脑至少4小时、工作至少5年的办公室职员。对所有受试者进行姿势、肌肉长度和力量评估，并分为三组：健康组（ ）、A型LCS组（ ）和B型LCS组（ ）。测试姿势为在电脑工作站坐30分钟并进行标准化打字，同时录像。然后从视频记录中在四个时间点拍摄三张图片。所有角度均采用双向混合方差分析进行测量，并使用事后Tukey检验分析数据。
在0、10、20和30分钟坐姿时，B型LCS受试者的CVA、SSA和TFA明显低于健康受试者和A型LCS受试者。三组之间的HTA没有显著差异。
与其他组相比，B型LCS受试者的上身姿势变化显著。
