Craniovertebral angle

颅骨角度
  • 文章类型: Journal Article
    患有精神病的人经常过着久坐的生活,增加发展向前头部姿势的风险。前头姿势影响上颈椎,增加日常不适的可能性,如骨骼错位,颈部疼痛,减少心肺健康。改善精神病患者的心肺健康状况是相关的,鉴于其在增强身心健康方面的优势。这项研究通过测量精神病性障碍的颅骨角度以及与心肺健康降低的关系来调查前头姿势。为了确定前头姿势是否特定于精神障碍,我们还纳入了自闭症谱系障碍患者和健康对照者.在85名参与者中(32名精神病患者,26自闭症谱系障碍,27个健康对照),摄影测量定量显示,与自闭症谱系障碍(p=<0.02)和健康对照组(p=<0.01)相比,精神病性障碍的平均颅颈角明显降低。头盖角减小与精神病患者的心肺功能降低有关(R2=0.45,p=<0.01),但与其他对照组无关。这项研究发现颅骨角度减小,表明精神病患者的前头姿势。此外,这与心肺健康下降有关。需要进一步的研究来检查根本原因,并调查这种情况是否可以通过物理治疗逆转。
    Individuals with psychotic disorders often lead sedentary lives, heightening the risk of developing forward head posture. Forward head posture affects upper cervical vertebrae, raising the likelihood of daily discomforts like skeletal misalignment, neck pain, and reduced cardiorespiratory fitness. Improving cardiorespiratory fitness in psychotic disorders is relevant, given its proven benefits in enhancing physical and mental health. This study investigates forward head posture by measuring craniovertebral angles in psychotic disorders and the relationship with reduced cardiorespiratory fitness. To determine whether forward head posture is specific to psychotic disorders, we also included individuals with autism spectrum disorder and healthy controls. Among 85 participants (32 psychotic disorders, 26 autism spectrum disorder, 27 healthy controls), photogrammetric quantification revealed a significantly lower mean craniocervical angle in psychotic disorders compared to autism spectrum disorder (p =  < 0.02) and the healthy control group (p =  < 0.01). Reduced craniovertebral angle is related to diminished cardiorespiratory fitness in psychosis (R2 = 0.45, p =  < 0.01) but not in other control groups. This study found reduced craniovertebral angles, indicating forward head posture in psychotic disorders. Moreover, this relates to diminished cardiorespiratory fitness. Further research is needed to examine the underlying causes and to investigate whether this can be reversed through physical therapy.
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  • 文章类型: Journal Article
    本体感受神经肌肉促进(PNF)伸展运动已被广泛提倡用于治疗患有不同肌肉骨骼疾病的患者。然而,它对前头位(FHP)患者颞下颌关节功能障碍(TMD)的治疗效果尚未得到充分研究。
    探讨PNF伸展运动对FHP患者TMD治疗的影响。
    预期,随机化,双盲临床试验。将24例年龄在18-40岁的TMD和FHP患者随机分为PNF组或对照组。由12例患者组成的PNF组除了常规物理疗法治疗(FHP矫正练习和颞下颌关节超声检查)外,还接受了咀嚼肌的PNF伸展运动;由12例患者组成的对照组仅接受常规物理疗法治疗。每周进行两次干预,持续六周。头颅角度,痛阈值,疼痛强度,颞下颌关节ROM,在干预前后对所有参与者进行颞下颌关节功能评估。使用双向混合MANOVA分析结果。对于进一步的多重比较,使用Bonferroni校正进行事后测试。
    两组治疗前无显著差异(p>0.05)。治疗后组间比较显示,所有结果指标的统计学差异(p<0.05)有利于PNF组。
    在常规物理治疗计划中添加咀嚼肌的PNF伸展运动是治疗FHP患者TMD的有效方法,而不仅仅是常规物理治疗计划。
    UNASSIGNED: Proprioceptive neuromuscular facilitation (PNF) stretching exercises have been widely advocated for the management of patients with different musculoskeletal conditions. However, its effect on the treatment of temporomandibular dysfunction (TMD) in patients with forward head posture (FHP) has not been fully investigated.
    UNASSIGNED: To investigate the effect of PNF stretching exercises on the treatment of TMD in patients with FHP.
    UNASSIGNED: A prospective, randomized, double-blinded clinical trial. Twenty-four patients with TMD and FHP aged from 18-40 years were randomly assigned to PNF or control group. The PNF group composed of 12 patients received PNF stretching exercises of masticatory muscles in addition to routine physical therapy treatment (FHP correction exercises and ultrasound for the temporomandibular joint); the control group composed of 12 patients received routine physical therapy treatment only. Interventions were conducted twice a week for six weeks. Craniovertebral angle, pain threshold, pain intensity, temporomandibular joint ROM, and temporomandibular joint function were assessed for all participants before and after the intervention. The outcomes were analyzed using Two-way mixed MANOVA. For further multiple comparisons, post-hoc tests with the Bonferroni correction were performed.
    UNASSIGNED: There was no significant difference between both groups pre-treatment (p> 0.05). Comparison between groups post-treatment revealed statistically significant differences in all outcome measures (p< 0.05) in favor of the PNF group.
    UNASSIGNED: Adding PNF stretching exercises of masticatory muscles to routine physical therapy programs is an effective method for management of TMD in patients with FHP more than routine physical therapy programs alone.
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  • 文章类型: Journal Article
    背景:由于长时间使用计算机,计算机专业人员通常会形成向前的头部姿势,导致颈部疼痛。器械辅助软组织动员(IASTM),一种治疗肌筋膜触发点的先进技术,解决这些肌肉骨骼问题越来越受欢迎。
    目的:该研究旨在比较IISTM动员对SBAL(浅表后臂线)和SM(特定肌肉-上斜方肌,肩胛骨提肌,和胸锁乳突)在计算机专业人员中管理慢性颈部疼痛。
    方法:这项研究涉及62名计算机专业人员,随机分为两组。A组在SBAL上接受IISTM,B组在SM上接受IISTM治疗颈部疼痛,每个每周接受三次疗程,共四周。结果变量,如颈部残疾指数(NDI),NPRS(颈部疼痛量表),头盖角(CVA),和屈曲的运动范围(ROM),和侧屈曲(右侧和左侧)在基线评估,2周和4周。
    结果:在IASTM2周后,SBAL和SM组均观察到NPRS的显着改善,SBAL组表现出更大的改善。4周时,SBAL上的ISTM显示NPRS的改善明显更高,CVA,NDI,与SM组相比,屈曲。重复测量ANOVA表明时间和组的显着主要影响,对于所有结果变量,时间和组之间存在显著的相互作用,除了CVA.
    结论:研究表明,与针对特定肌肉相比,在计算机专业人员中,SBAL上的IISTM可能为慢性颈痛提供更有效的治疗方法。
    BACKGROUND: Computer professionals often develop a forward head posture due to prolonged hours of computer use, leading to neck pain. Instrument-assisted soft tissue mobilization (IASTM), an advanced technique for treating myofascial trigger points, has become increasingly popular for addressing these musculoskeletal issues.
    OBJECTIVE: The study aimed to compare the effectiveness of IASTM mobilization on SBAL (superficial back arm line) and SM(specific muscles-upper trapezius, levator scapulae, and sternocleidomastoid) in managing chronic neck pain among computer professionals.
    METHODS: The study involved 62 computer professionals, randomly divided into two groups. Group A received IASTM on SBAL and group B received IASTM on SM for neck pain each receiving three sessions weekly for four weeks. Outcome variables like Neck Disability Index (NDI), NPRS(Neck Pain Rating Scale), Craniovertebral angle (CVA), and range of motion (ROM) for flexion, and side flexion (right & left side) were evaluated at baseline, 2 weeks and 4 weeks.
    RESULTS: Significant improvement in NPRS were observed in both the SBAL and SM groups after 2 weeks of IASTM, wth the SBAL group demonstrating greater improvement. At 4 weeks, IASTM on SBAL showed significantly higher improvements in NPRS, CVA, NDI, and flexion compared to the SM group. The repeated measures ANOVA indicated a significant main effect of both time and group, along with a significant interaction between time and group for all outcome variables, except for CVA.
    CONCLUSIONS: The study indicates that IASTM on SBAL may offer a more effective treatment for chronic neck pain in computer professionals compared to targeting specific muscles.
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  • 文章类型: Journal Article
    驾驶过程中长时间坐着与颈部疼痛有关,不舒服的身体姿势,和重复的动作。认识到这些挑战,本研究旨在调查汽车驾驶员的宫颈健康参数。
    样本由160名25至45岁的汽车驾驶员组成。然后根据颈部疼痛将该受试者分为两组。参加者符合规定的标准,比如年龄在25-45岁之间,保持BMI为18-24,每天至少驾驶2小时,至少3-5年。为了评估结果,我们在智能手机上使用了测斜仪和指南针应用程序来测量颈椎运动范围(CROM)。我们使用Surgimap软件来估计颅骨角度(CVA),使用CROM装置(颈椎活动范围)进行本体感受评估.
    结果显示,颈部疼痛组的参与者的颈椎运动范围(CROM)值比没有颈部疼痛组的低。同样,颈痛组的头椎角(CVA)较小(平均差-6.3°),表示更向前的头部姿势。颈部疼痛导致本体感觉准确性的平均差异为-4.5°。这表明颈部疼痛会影响CROM,CVA,和汽车司机的本体感受。
    汽车驾驶会显著影响颈部疼痛患者的颈椎参数,减少颈椎的活动范围,颅骨角度改变,本体感觉准确性下降。这些发现强调了为驾驶员量身定制的人体工程学干预和本体感受训练的必要性。未来的研究应扩大人口统计学参数,并考虑潜在的混杂因素,以全面了解汽车驾驶与颈部健康之间的关系。
    UNASSIGNED: Prolonged sitting during driving is linked to neck pain, uncomfortable body positions, and repetitive motions. Recognizing these challenges, this study aimed to investigate Cervical Health Parameters in Car Drivers.
    UNASSIGNED: The sample consisted of 160 car drivers between 25 and 45 years. This subject was then divided into two groups based on neck pain. Participants met the required criteria, such as being between 25-45 years of age, maintaining a BMI of 18-24, and driving for at least 2 hours each day for at least 3-5 years. To evaluate the results, we employed a clinometer and compass app on a smartphone to measure the Cervical Range of Motion (CROM). We used Surgimap software to estimate the Craniovertebral Angle (CVA), and a (Cervical range of motion) CROM device was used for proprioception assessment.
    UNASSIGNED: The result shows the participants in neck pain group displayed lower Cervical Range of Motion (CROM) values than without neck Pain Group. Similarly, the Craniovertebral Angle (CVA) was smaller in the neck Pain Group (mean difference of -6.3°), indicating a more forward head posture. Neck pain resulted in a mean difference of -4.5° in proprioception accuracy. This indicates that neck pain affects CROM, CVA, and proprioception in car drivers.
    UNASSIGNED: Car driving significantly impacts cervical parameters in individuals with neck pain, reducing cervical range of motion, altered craniovertebral angle, and diminished proprioceptive accuracy. These findings emphasize the need for ergonomic interventions and proprioceptive training tailored for drivers. Future research should broaden demographic parameters and consider potential confounders to provide a holistic understanding of the relationship between car driving and neck health.
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  • 文章类型: Journal Article
    背景:前头姿势(FHP)和颈椎前凸曲率改变是常见的脊柱移位,通常与颈部疼痛和残疾有关。确定FHP的主要类别有两个:射线照相和姿势测量。方法:本研究调查了头颅角(CVA)之间的相关性,射线照相测量的C2-C7矢状垂直轴(SVA),在慢性肌筋膜疼痛(CMP)的参与者样本中,宫颈前凸(绝对旋转角度:ARAC2-C7)。在120名参与者中,我们进行了CVA的体位测量和颈椎侧位片,其中测量C2-C7SVA和ARAC2-C7。线性回归R2值评估CVA之间的相关性,C2-C7SVA,并寻求ARAC2-C7。结果:在CVA和C2-C7SVA之间确定了具有统计学意义的弱线性拟合(Spearman\sr=0.549;R2=0.30,p<0.001),这两种措施之间有很大的差异。对于前凸ARAC2-C7和CVA,确定了统计学上显著的线性拟合(非常弱):Spearman'sr=0.524;R2=0.275;p<0.001。CVA的50°值对应于X射线上C2-C7SVA的20mm值。结论:虽然CVA和放射学C2-C7SVA在个体中弱相关,它们似乎代表了矢状宫颈平衡的不同方面。CVA不能代替影像学测量的宫颈前凸度。我们建议在考虑患者干预措施时,与CVA相比,应更加重视矢状宫颈对齐的影像学检查。
    Background: Forward head posture (FHP) and altered cervical lordotic curvatures are common spine displacements often associated with neck pain and disability. Two primary categories for determining FHP exist: radiographic and postural measurements. Methods: This study investigated the correlation between the craniovertebral angle (CVA), the radiographically measured C2-C7 sagittal vertical axis (SVA), and cervical lordosis (absolute rotation angle: ARA C2-C7) in a sample of participants with chronic myofascial pain (CMP). In 120 participants, we performed both a postural measurement of the CVA and a lateral cervical radiograph, where the C2-C7 SVA and ARA C2-C7 were measured. A linear-regression R2 value to assess the correlation between the CVA, C2-C7 SVA, and ARA C2-C7 was sought. Results: A statistically significant weak linear fit was identified (Spearman\'s r = 0.549; R2 = 0.30, p < 0.001) between the CVA and C2-C7 SVA, having considerable variation between the two measures. A statistically significant linear fit (very weak) was identified for the lordosis ARA C2-C7 and the CVA: Spearman\'s r = 0.524; R2 = 0.275; p < 0.001. A value of 50° for the CVA corresponded to a value of 20 mm for the C2-C7 SVA on an X-ray. Conclusion: While the CVA and radiographic C2-C7 SVA are weakly correlated in an individual, they seem to represent different aspects of sagittal cervical balance. The CVA cannot replace radiographically measured cervical lordosis. We recommend that more emphasis be given to radiographic measures of sagittal cervical alignment than the CVA when considering patient interventions.
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  • 文章类型: Journal Article
    头部姿势偏差见于52.5%的6-15岁儿童。研究表明,不良的姿势习惯会损害颅面生长和发育过程中的肌肉功能。肌肉失衡会导致牙齿和骨骼结构的异常定位,一种产生负面影响的条件,例如面部形态的变化。
    通过光度分析来确定10-12岁儿童的颅骨角与头部姿势的函数关系和与面部轮廓的glabella-nasale-pogonion(G-Sn-Pg)角之间的关系,结果将有助于避免面部发育问题。
    33名受试者符合纳入标准。使用横向测光法和ImageJ测量了他们的颅骨角度和面部轮廓。颅骨角度是通过用水平线连接耳屏和C7来确定的,而面部轮廓角度是通过连接眼睑来确定的,鼻下,还有Pogonion.采用Pearson相关性检验分析颅骨与G-Sn-Pg角度值的关系。
    在颅骨角和G-Sn-Pg角之间观察到显着关系(p<0.05),尽管这种关系很弱(r=0.373)。
    更向前的头部姿势与更凸的面部轮廓有关,这种关系对早期预防和治疗是有用的。
    UNASSIGNED: Head posture deviation is seen in 52.5 % of children aged 6-15 years. Studies have shown that poor posture habits can impair muscle function during craniofacial growth and development. A muscle imbalance causes abnormal positioning of dental and skeletal structures, a condition that exerts negative impacts, such as changes in facial morphology.
    UNASSIGNED: To determine through photometric analysis the relationship between craniovertebral angle as a function of head posture and glabella-subnasale-pogonion (G-Sn-Pg) angle as a function of facial profile in 10-12-year-old children, and the results will help to avoid facial development issues.
    UNASSIGNED: Thirty-three subjects met the inclusion criteria. Their craniovertebral angles and facial profiles were measured using lateral photometry and ImageJ. The craniovertebral angle was determined by connecting the tragus and C7 with a horizontal line, whereas the facial profile angle was determined by connecting the glabella, subnasale, and pogonion. The relationship between the craniovertebral and G-Sn-Pg angle values was analyzed using the Pearson correlation test.
    UNASSIGNED: A significant relationship was observed between the craniovertebral angle and the G-Sn- Pg angle (p < 0.05), although such a relationship was weak (r = 0.373).
    UNASSIGNED: A more forward head posture is associated with a more convex facial profile, and this relationship is useful for the early prevention and treatment.
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  • 文章类型: Journal Article
    颈部疼痛是自行车司机普遍存在的肌肉骨骼问题,通常是由于扩展的静态姿势,重复的头部运动,和暴露于振动。本研究旨在评估宫颈ROM之间的联系,颈部本体感觉,CVA,与那些没有颈部疼痛的自行车司机相比,颈部疼痛的自行车司机的生活质量,因此可以制定有针对性的干预措施来提高他们的幸福感。
    进行了一项涉及100名20-50岁自行车司机的横断面研究,分为两组:有颈部疼痛的患者(n=50)和没有颈部疼痛的患者(n=50)。使用智能手机测量宫颈ROM,通过头部复位试验评估颈部本体感觉,和CVA使用带有铅垂线的侧视照片确定。采用简表36(SF-36)问卷评价QOL。数据分析采用独立t检验和Pearson相关系数。
    颈部疼痛的自行车驾驶员表现出宫颈ROM显着降低(p值=<0.001),颈部本体感觉受损(p值=<0.001),与没有颈部疼痛的对应物相比,CVA降低(p值=<0.001)。颈部疼痛与生活质量呈显著负相关,在SF-36的所有八个域中得分较低。宫颈ROM,颈部本体感觉,和CVA与各种QOL域显示中等相关性(p值=<0.05)。
    自行车驾驶员的颈部疼痛与宫颈ROM减少有关,颈部本体感觉受损,减少CVA。这些因素与较低的生活质量有关,身体和心理领域。解决这些方面的干预措施可以提高经历颈部疼痛的自行车驾驶员的生活质量。
    UNASSIGNED: Neck pain is a prevalent musculoskeletal issue among bike drivers, often resulting from extended static postures, repetitive head movements, and exposure to vibrations. This study aims to assess the connection between cervical ROM, neck proprioception, CVA, and QOL in bike drivers with neck pain compared to those without neck pain so that the targeted interventions can be developed to enhance their well-being.
    UNASSIGNED: A cross-sectional study involving 100 bike drivers aged 20-50 years was conducted, split into two groups: those with neck pain (n=50) and those without neck pain (n=50). Cervical ROM was measured using a smartphone, neck proprioception was assessed through a head repositioning test, and CVA was determined using lateral-view photographs with a plumb line. The Short Form-36 (SF-36) questionnaire was employed to evaluate QOL. Data analysis was conducted using independent t-tests and Pearson\'s correlation coefficient.
    UNASSIGNED: Bike drivers with neck pain exhibited significantly reduced cervical ROM (p-value=<0.001), impaired neck proprioception (p-value=<0.001), and decreased CVA (p-value=<0.001) compared to their counterparts without neck pain. A strong negative correlation was found between neck pain and QOL, with lower scores in all eight domains of the SF-36. Cervical ROM, neck proprioception, and CVA showed moderate correlations with various QOL domains (p-value=<0.05).
    UNASSIGNED: Neck pain in bike drivers is linked to decrease cervical ROM, compromised neck proprioception, and reduced CVA. These factors correlate with a lower quality of life, both physical and mental domains. Interventions addressing these aspects may enhance the quality of life for bike drivers experiencing neck pain.
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  • 文章类型: Journal Article
    颅骨角度(CVA)改变是颈部的致病因素,肩膀,和颞下颌关节紊乱病。因此,作为治疗干预的结果指标,使用Surgimap智能手机应用程序测量颅骨角度是一种具有成本效益的,容易接近,可靠的工具。本研究的目的是评估Surgimap智能手机应用程序的临床特性,使用Surgimap系统软件测量不同年龄段和位置的颅骨角度。
    将90名颈部疼痛患者随机分配到年龄在18至30岁之间(A组;n=45)和45-60岁之间(B组;n=45)。使用Surgimap智能手机应用程序和Surgimap系统软件,在矢状面客观测量了颅骨角度。使用组内相关系数来确定效度和信度。确定受试者工作特征(ROC)曲线和曲线下面积(AUC),以区分有和没有前头姿势的参与者。
    这项研究的结果表明,对于不同的位置和年龄,智能手机SurgimapApplication和SurgimapSystemSoftware关联0.95,p值为0.01。坐姿的CVA测量值明显低于站立姿势,无论方法或年龄。这两个职位都表现出很高的评分者内部可靠性,由0.972和0.991之间的组内相关系数(ICC)证明。最小可检测变化(MDC)值范围为1.3至1.733,表明测量精度高。智能手机应用程序显示出出色的诊断灵敏度(A组站立时为100.00%)和特异性(B组站立时为93.55%)。
    Surgimap智能手机应用程序是一种可靠且准确的颅骨角度测量方法,可用于测量结果。在测量CVA时,还发现站立姿势比坐姿更好。
    UNASSIGNED: Craniovertebral angle (CVA) alteration is a causative factor for the neck, shoulder, and temporomandibular joints disorders. Therefore, as an outcome measure for therapeutic intervention, measuring the craniovertebral angle with the Surgimap smartphone app is a cost-effective, easily accessible, and reliable tool. This study\'s objective was to assess the clinimetric properties of the Surgimap smartphone application with Surgimap system software to measure the Craniovertebral Angle in different age groups and positions.
    UNASSIGNED: Ninety subjects with neck pain were randomly allocated to aged between 18 and 30 years (Group A; n = 45) and 45-60 years (Group B; n = 45). Using the Surgimap smartphone application and Surgimap system software, the craniovertebral angle was measured objectively in the sagittal plane. Intraclass correlation coefficients were used to determine validity and reliability. Receiver operating characteristic (ROC) curves and the area under the curves (AUC) were determined to distinguish participants with and without forward head posture.
    UNASSIGNED: The result of this study shows that Smartphone Surgimap Application and Surgimap System Software correlate 0.95 and have p-values of 0.01 for diverse positions and ages. CVA measurement in the sitting position was significantly lower than in the standing position, regardless of methodology or age. Both positions demonstrated high intra-rater reliability, as evidenced by Intraclass Correlation Coefficients (ICC) between 0.972 and 0.991. The minimum detectable change (MDC) values ranged from 1.3 to 1.733, indicating high measurement accuracy. The smartphone application demonstrated outstanding diagnostic sensitivity (100.00% for Group A standing) and specificity (93.55% for Group B standing).
    UNASSIGNED: The Surgimap smartphone application is a reliable and accurate method for craniovertebral angle measurement and is useful for measuring outcomes. Also standing posture was found to be better than sitting posture while measuring the CVA.
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  • 文章类型: Journal Article
    深颈屈肌通过低强度收缩来稳定和支撑颈部姿势,对于保持颈部姿势非常重要,确保静态耐久性。受试者在使用压力生物反馈单元测量其颈深屈肌耐力后执行计算机任务。在参与者完成计算机任务10分钟时,测量颅骨角度(CVA)和肌肉活动。在0-2分钟时,深颈屈肌耐力与颅骨角度变化显着负相关。在0-2分钟时,深颈屈肌耐力与胸锁乳突肌和上斜方肌活动显着负相关。深颈屈肌耐力在0-2分钟时负面预测了CVA的变化,并解释了CVA变化的28.8%。颈深屈肌耐力越低,在计算机任务期间,CVA和颈肩肌肉活动发生的同时变化越早。
    The deep neck flexors are important for maintaining neck posture by stabilizing and supporting it through low-intensity contraction, ensuring static endurance. The subjects performed computer tasks after having their deep neck flexor endurance measured using a pressure biofeedback unit. The craniovertebral angle (CVA) and the muscle activities were measured while participants were completing computer tasks for 10 min. The deep neck flexor endurance was significantly negatively correlated with CVA changes at 0-2 min. The deep neck flexor endurance was significantly negatively correlated with sternocleidomastoid muscle and upper trapezius activity at 0-2 min. The deep neck flexor endurance negatively predicted CVA changes at 0-2 min and explained 28.8% of the variance in the CVA changes. The lower the deep neck flexor endurance, the earlier the simultaneous changes occurred in the CVA and the neck and shoulder muscle activities during computer tasks.
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  • 文章类型: Journal Article
    与连续使用片剂相关的静态姿势可导致颈部和上肢的肌肉骨骼疾病以及呼吸功能障碍。我们假设0度平板放置(平放在桌子上)会影响人体工程学风险和呼吸功能。将18名本科生分为两组(每组n=9)。在第一组中,片剂以0度角放置,而在第二组中,它以40至55度角放置在学生学习椅上。平板电脑连续使用2小时用于书写和互联网使用。快速上肢评估(RULA),颅骨角度,并评估呼吸功能。呼吸功能无显著差异,包括1s用力呼气量(FEV1),强迫肺活量(FVC),和FEV1/FVC,组间(p=0.09)或组内。然而,RULA的组间差异有统计学意义(p=0.001),0度组的人体工程学风险更大。前测和后测之间也存在显着的组内差异。组间CV角有显著差异(p=0.03),0度组的姿势不好,以及在0度组中(p=0.039),虽然不在40到55度的组中(p=0.067)。以0度角放置平板电脑的本科生会增加人体工程学风险,并增加患肌肉骨骼疾病和不良姿势的可能性。因此,提升平板电脑和设置休息间隔可以防止或减少平板电脑用户的人体工程学风险。
    The static posture associated with continuous tablet use can lead to musculoskeletal disorders of the neck and upper extremities as well as respiratory function disorders. We hypothesized that 0-degree tablet placement (flat on a table) would affect ergonomic risks and respiratory function. Eighteen undergraduate students were divided into two groups (n = 9 per group). In the first group, the tablet was placed at a 0-degree angle, whereas in the second group, it was placed at a 40- to 55-degree angle on a student learning chair. The tablet was used continuously for 2 h for writing and internet use. Rapid upper-limb assessment (RULA), craniovertebral angle, and respiratory function were assessed. There was no significant difference in respiratory function, including forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), and FEV1/FVC, between the groups (p = 0.09) or within groups. However, there was a statistically significant between-group difference in RULA (p = 0.001), with the 0-degree group having a greater ergonomic risk. There were also significant within-group differences between pre- and posttest. The CV angle differed significantly between groups (p = 0.03), whereby the 0-degree group had poor posture, as well as within the 0-degree group (p = 0.039), though not within the 40- to 55-degree group (p = 0.067). Undergraduate students who place their tablets at a 0-degree angle face increased ergonomic risks and higher potential for developing musculoskeletal disorders and poor posture. Thus, elevating the tablet and instituting rest intervals may prevent or decrease the ergonomic risks among tablet users.
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