Russell Brent S, Owens Edward F, Hosek Ronald S, Dever Lydia L, Weiner Michael T
J Chiropr Educ. 2023 Oct 1;37(2):73-81. doi: 10.7899/JCE-22-13.
Force-sensing treatment tables are becoming more commonly used by chiropractic educational institutions. However, when a table-embedded force platform is the sole measurement method, there is little information available about what force-time values instructors and students should expect for side-posture spinal manipulative thrusts. The purpose of this report is to provide force-time values recorded with such a system during side-posture manipulation with human recipients.
Student volunteers were examined by and received lumbar or pelvic side-posture manipulation from experienced chiropractors who were diplomates of the Gonstead Clinical Studies Society. Forces were recorded using proprietary software of a Bertec force platform; force and time data were analyzed with a custom-programmed software tool in Excel.
Seven doctors of chiropractic performed 24 thrusts on 23 student recipients. Preload forces, averaging 69.7 N, and thrust loading duration, averaging 167 milliseconds, were similar to previous studies of side-posture manipulation. Peak loads were higher than previous studies, averaging 1010.9 N. Other variables included prethrust liftoff force, times from thrust onset to peak force and peak load to resolution of thrust, and average rates of force loading and unloading.
The values we found will be used for reference at our institution and may be useful to instructors at other chiropractic educational institutions, in the teaching of lumbar side-posture manipulation. A caveat is that the values of this study reflect multiple sources of applied force, not solely the force applied directly to the spine.
整脊教育机构越来越普遍地使用力感应治疗床。然而，当嵌入床体的力平台是唯一的测量方法时，关于教师和学生在侧位脊柱手法推按中应期望的力-时间值，几乎没有可用信息。本报告的目的是提供在对人体受试者进行侧位手法操作期间，用这样一个系统记录的力-时间值。
学生志愿者由冈斯特德临床研究协会的认证整脊师进行检查，并接受腰椎或骨盆侧位手法操作。使用Bertec力平台的专有软件记录力；力和时间数据用Excel中自定义编程的软件工具进行分析。
七位整脊医生对23名学生受试者进行了24次推按。预加载力平均为69.7N，推按加载持续时间平均为167毫秒，与先前侧位手法操作的研究相似。峰值负荷高于先前研究，平均为1010.9N。其他变量包括推按前的抬升力、从推按开始到峰值力的时间以及从峰值负荷到推按结束的时间，以及力加载和卸载的平均速率。
我们发现的值将在我们机构用作参考，可能对其他整脊教育机构的教师在腰椎侧位手法操作教学中有用。需要注意的是，本研究的值反映了多种施加力的来源，而不仅仅是直接施加到脊柱上的力。
