Steven R. Passmore DC, PhD , Quinn Malone BSc , Brian MacNeil PhD , Elizabeth Sanli PhD , David Gonzalez PhD
{"title":"人体形状视觉刺激的不同特征影响临床医生在低保真模型上的脊柱操纵推力剂量:一项横断面研究","authors":"Steven R. Passmore DC, PhD , Quinn Malone BSc , Brian MacNeil PhD , Elizabeth Sanli PhD , David Gonzalez PhD","doi":"10.1016/j.jmpt.2022.06.005","DOIUrl":null,"url":null,"abstract":"<div><h3>Objective</h3><p>The purpose of this study was to determine whether chiropractic clinicians modulate spinal manipulation (SM) thrust characteristics based on visual perception of simulated human silhouette attributes.</p></div><div><h3>Methods</h3><p>We performed a cross-sectional within-participant design with 8 experienced chiropractors. During each trial, participants observed a human-shaped life-sized silhouette of a mock patient and delivered an SM thrust on a low-fidelity thoracic spine model based on their visual perception. Silhouettes varied on the following 3 factors: apparent sex (male or female silhouette), height (short, average, tall), and body mass index (BMI) (underweight, healthy, obese). Each combination was presented 6 times for a total of 108 trials in random order. Outcome measures included peak thrust force, thrust duration, peak preload force, peak acceleration, time to peak acceleration, and rate of force application. A 3-way repeated measures analysis of variance model was used to for each variable, followed by Tukey's honestly significant difference on significant interactions.</p></div><div><h3>Results</h3><p>Peak thrust force was reduced when apparent sex of the presented silhouette was female (F<sub>1,7</sub> = 5.70, <em>P</em> = .048). Thrust duration was largely invariant, except that a BMI by height interaction revealed a longer duration occurred for healthy tall participants than healthy short participants (F<sub>4,28</sub> = 4.34, <em>P</em> = .007). Compared to an image depicting obese BMI, an image appearing underweight lead to reduced peak acceleration (F<sub>2,5</sub> = 6.756, <em>P</em> = .009). Clinician time to peak acceleration was reduced in short compared to tall silhouettes (t<sub>7</sub> = 2.20, <em>P</em> = .032).</p></div><div><h3>Conclusion</h3><p>Visual perception of simulated human silhouette attributes, including apparent sex, height, and BMI, influenced SM dose characteristics through both kinetic and kinematic measures. The results suggest that visual information from mock patients affects the decision-making of chiropractic clinicians delivering SM thrusts.</p></div>","PeriodicalId":16132,"journal":{"name":"Journal of Manipulative and Physiological Therapeutics","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0161475422000471/pdfft?md5=53b06591e47e9459f67faabf9e497adc&pid=1-s2.0-S0161475422000471-main.pdf","citationCount":"1","resultStr":"{\"title\":\"Differing Characteristics of Human-Shaped Visual Stimuli Affect Clinicians’ Dosage of a Spinal Manipulative Thrust on a Low-Fidelity Model: A Cross-Sectional Study\",\"authors\":\"Steven R. 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Clinician time to peak acceleration was reduced in short compared to tall silhouettes (t<sub>7</sub> = 2.20, <em>P</em> = .032).</p></div><div><h3>Conclusion</h3><p>Visual perception of simulated human silhouette attributes, including apparent sex, height, and BMI, influenced SM dose characteristics through both kinetic and kinematic measures. 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引用次数: 1
摘要
目的本研究的目的是确定捏脊临床医生是否根据模拟人体轮廓属性的视觉感知来调节脊柱推拿(SM)的推力特征。方法对8名经验丰富的脊医进行横断面参与者设计。在每次试验中，参与者观察一个真人大小的模拟病人的轮廓，并根据他们的视觉感知在低保真胸椎模型上进行SM推力。轮廓的变化取决于以下3个因素:外表性别(男性或女性轮廓)、身高(矮、中等、高)和身体质量指数(BMI)(体重不足、健康、肥胖)。每种组合按随机顺序呈现6次，共108次试验。结果测量包括峰值推力、推力持续时间、峰值预载力、峰值加速度、达到峰值加速度的时间和施力率。对各变量采用3-way重复测量方差分析模型，然后采用Tukey's在显著交互作用上的诚实显著性差异。结果当呈现轮廓的表观性别为女性时，说话推力降低(F1,7 = 5.70, P = 0.048)。推力持续时间在很大程度上是不变的，除了BMI与身高的相互作用显示健康的高个子参与者比健康的矮个子参与者持续时间更长(F4,28 = 4.34, P = .007)。与BMI肥胖的图像相比，体重过轻的图像导致峰值加速度降低(F2,5 = 6.756, P = 0.009)。与高大的轮廓相比，临床医生达到峰值加速度的时间缩短了(t7 = 2.20, P = 0.032)。结论模拟人体轮廓属性(包括表观性别、身高和BMI)的视觉感知通过动力学和运动学两方面影响SM剂量特征。结果表明，来自模拟患者的视觉信息会影响捏脊临床医生提供SM推力的决策。
Differing Characteristics of Human-Shaped Visual Stimuli Affect Clinicians’ Dosage of a Spinal Manipulative Thrust on a Low-Fidelity Model: A Cross-Sectional Study
Objective
The purpose of this study was to determine whether chiropractic clinicians modulate spinal manipulation (SM) thrust characteristics based on visual perception of simulated human silhouette attributes.
Methods
We performed a cross-sectional within-participant design with 8 experienced chiropractors. During each trial, participants observed a human-shaped life-sized silhouette of a mock patient and delivered an SM thrust on a low-fidelity thoracic spine model based on their visual perception. Silhouettes varied on the following 3 factors: apparent sex (male or female silhouette), height (short, average, tall), and body mass index (BMI) (underweight, healthy, obese). Each combination was presented 6 times for a total of 108 trials in random order. Outcome measures included peak thrust force, thrust duration, peak preload force, peak acceleration, time to peak acceleration, and rate of force application. A 3-way repeated measures analysis of variance model was used to for each variable, followed by Tukey's honestly significant difference on significant interactions.
Results
Peak thrust force was reduced when apparent sex of the presented silhouette was female (F1,7 = 5.70, P = .048). Thrust duration was largely invariant, except that a BMI by height interaction revealed a longer duration occurred for healthy tall participants than healthy short participants (F4,28 = 4.34, P = .007). Compared to an image depicting obese BMI, an image appearing underweight lead to reduced peak acceleration (F2,5 = 6.756, P = .009). Clinician time to peak acceleration was reduced in short compared to tall silhouettes (t7 = 2.20, P = .032).
Conclusion
Visual perception of simulated human silhouette attributes, including apparent sex, height, and BMI, influenced SM dose characteristics through both kinetic and kinematic measures. The results suggest that visual information from mock patients affects the decision-making of chiropractic clinicians delivering SM thrusts.
期刊介绍：
The Journal of Manipulative and Physiological Therapeutics (JMPT) is an international and interdisciplinary journal dedicated to the advancement of conservative health care principles and practices. The JMPT is the premier biomedical publication in the chiropractic profession and publishes peer reviewed, research articles and the Journal''s editorial board includes leading researchers from around the world.
The Journal publishes original primary research and review articles of the highest quality in relevant topic areas. The JMPT addresses practitioners and researchers needs by adding to their clinical and basic science knowledge and by informing them about relevant issues that influence health care practices.
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