Department of Corrective Exercise & Sport Injury, Faculty of Physical Education and Sport Sciences, Allameh Tabataba'i University, Tehran, Iran.
Department of Corrective Exercise & Sport Injury, Faculty of Physical Education and Sport Sciences, Allameh Tabataba'i University, Western Azadi sport complex boulevard, Hakim Highway, Tehran, Iran.
BMC Pediatr. 2022 Apr 27;22(1):230. doi: 10.1186/s12887-022-03300-7.
Previous studies have addressed the effects of different exercises and modalities on forward head posture (FHP), but the minimal clinically important difference (MCID) of the effect of exercises on FHP remains unclear. Therefore, this study aimed to investigate the effects of selective corrective exercises (SCEs) on the craniovertebral angle (CVA) and shoulder angle (SA) in students with FHP and to establish MCID for these angles.
In this randomized clinical trial study, a total of 103 second-grade male students with FHP were enrolled. Participants were randomly assigned to experimental and control groups. CVA and SA of participants were measured before and after the 8-week selective corrective exercise program (including strengthening and stretching exercises). The photogrammetric method was used to measure CVA and SA. MCID value was calculated for CVA and SA using the distribution method.
The results showed that there was a significant difference between the experimental and control groups in terms of CVA (F = 89.04, P = 0.005, Effect size = 0.47) and SA (F = 18.83, P = 0.005, Effect size = 0.16). After eight weeks of selective corrective exercises, the MCID values of CVA and SA were 1.40° and 1.34°, respectively.
This study revealed that the selective corrective exercises might lead to postural correction of students having FHP problem. Results further indicated that a corrective exercise program would be considered beneficial if it increased CVA and SA values at least 1.40 and 1.34 degrees, respectively.
先前的研究已经探讨了不同运动和方式对前伸头姿势（FHP）的影响，但运动对 FHP 影响的最小临床有意义差异（MCID）仍不清楚。因此，本研究旨在探讨选择性矫正运动（SCE）对 FHP 学生颅颈角（CVA）和肩角（SA）的影响，并确定这些角度的 MCID。
在这项随机临床试验研究中，共纳入了 103 名患有 FHP 的二年级男性学生。参与者被随机分配到实验组和对照组。在 8 周的选择性矫正运动方案（包括强化和伸展运动）前后，测量参与者的 CVA 和 SA。使用摄影测量法测量 CVA 和 SA。使用分布法计算 CVA 和 SA 的 MCID 值。
结果显示，实验组和对照组之间的 CVA（F = 89.04，P = 0.005，效应量 = 0.47）和 SA（F = 18.83，P = 0.005，效应量 = 0.16）存在显著差异。经过 8 周的选择性矫正运动后，CVA 和 SA 的 MCID 值分别为 1.40°和 1.34°。
本研究表明，选择性矫正运动可能导致 FHP 问题学生的姿势得到矫正。结果进一步表明，如果矫正运动方案能使 CVA 和 SA 值分别增加至少 1.40°和 1.34°，则该方案将被认为是有益的。
