Effect of time on biomechanics during exercise on the functional re-adaptive exercise device

ABSTRACT

Mechanistic studies of the Functional Re-adaptive Exercise Device (FRED) have shown it automatically recruits Lumbar Multifidus (LM) and Transversus Abdominis (TrA) – two deep-spinal muscles that are atrophied and show altered motor control in low back pain (LBP). No studies have investigated the time required to familiarise to FRED exercise, which is required to inform future FRED based clinical trial protocols. This study therefore determined the effect of time, during FRED exercise, on biomechanical outcome measures, to establish the familiarisation period, and assess for loss of technique throughout a ten minute trial. A cohort comparison study of 148 participants, 70 experiencing low back pain, had lumbopelvic kinematics, exercise frequency and movement variability measured during a 10 minute trial. Magnitude-based inference was used to assess for familiarisation, using plots of variation over time with familiarised reference ranges. The no pain group took 170 seconds, and the back pain group took 150 seconds, to familiarise. A familiarisation period of at least 170 seconds (2.8 minutes) is recommended. This justifies, and provides a familiarisation time for use of the FRED as a motor control intervention.     

Mauthner细胞实验中几种典型波形与记录电极位置的关系

硬骨鱼类Mauthner(M)细胞作为一种优秀的实验模型,长期以来被用于中枢神经系统的研究。在实验中需要刺激鲫鱼脊髓,逆向激活M细胞轴突,用玻璃微电极记录其细胞内、外的电变化。为了鉴别电反应是否来自M细胞,该实验室结合多年实验经验总结了不同细胞的电反应特征,以正确判断记录电极在实验动物体内所处的位置。     

犬连续硬脊膜外阻滞方法的研究

为了探讨犬连续硬脊膜外阻滞的方法 ,在对大量不同品种犬的腰椎局部结构解剖的基础上 ,为 9例实验犬和 4例实施腹部手术的犬实施了连续硬脊膜外阻滞术。结果表明 :犬连续硬脊膜外阻滞镇痛完全 ,肌肉松弛良好 ,完全适用于犬的腹部手术     

The association of socio-economic factors with physical fitness and activity behaviours,spinal posture and retinal vessel parameters in first graders in urban Switzerland

Socio-economic status during childhood has been shown to be a strong predictor of adult health outcome. Therefore, we examined associations of parental educational level, household income and migrant background with physical fitness, spinal flexibility, spinal posture as well as retinal vessel diameters in children of an urban Swiss region. A total of 358 first graders of the Swiss canton Basel-Stadt (age: 7.3, SD: 0.4) were examined. Physical fitness (20 m shuttle run test, 20 m sprint, jumping sidewards and balancing backwards), spinal flexibility and spinal posture (MediMouse^®, Idiag, Fehraltdorf, Switzerland) and retinal microcirculation (Static Retinal Vessel Analyzer, Imedos Systems UG, Jena, Germany) were assessed. Parental education, household income, migrant background and activity behaviour were evaluated with a questionnaire. Parental education was associated with child aerobic fitness (P = 0.03) and screen time (P < 0.001). Household income was associated with jumping sidewards (P = 0.009), balancing backwards (P = 0.03) and sports club participation (P = 0.02). Migrant background was associated with BMI (P = 0.001), body fat (P = 0.03), aerobic fitness (P = 0.007), time spent playing outdoors (P < 0.001) and screen time (P < 0.001). For spinal flexibility and retinal vessel diameter, no associations were found (0.06 < P < 0.8). Low parental education, low household income and a migrant background are associated with poor physical fitness, higher BMI and body fat percentage and low-activity behaviour.     

成人下腰椎椎管侧隐窝MRI测量分析

目的：本研究试图通过测量本地区无症状正常成人腰椎椎管侧隐窝宽度，确定其测量标准值。方法：对无腰腿痛等症且完全排除椎管狭窄者200例行下腰段L3／4、L4／5及L5／S1水平MRI扫描，并进行双侧侧隐窝的测量与观察。结果：腰椎管侧隐窝宽度测量值在不同年龄组和不同性别之间统计学上无显著性差异（P〉0．05），在同一椎间盘水平左右两侧比较无显著性差异（P〉0．05），在不同椎间盘水平左右两侧比较无显著性差异（P〈0．001）。结论：本研究总结了正常国人成人下腰段L3至L5椎间盘水平双侧侧隐窝的MRI测量指标。其定量测量标准尚须谨慎应用，以便为临床提供更加准确、丰富的影像信息，进一步提高腰椎管狭窄症的诊断准确性。     

400例无痛人流手术不良反应的观察与护理

无痛人流手术中不良反应主要包括肢体躁动、呼吸抑制、心率减慢、无意识呓语、注射痛等。通过采取加大麻醉荆用量,畅通呼吸道,加大氧流量,辅助呼吸以及阿托品静脉推注等措施后,手术均顺利完成。术后极少数病人有轻微头晕、恶心等症状,未见其他不良反应。     

大学生脊柱前后弯曲状况的调查与分析

对23个省市的93名普通大学生（男62人,女31人）脊柱前后弯曲状况的调查,显示男子的颈前曲均值为5.03cm,女子为4.52cm,性差无显著性意义,男女合并统计时的颈前曲均值为4.86cm。其中,颈前曲大于5.0cm的大学生有38人,占样本含量的40.9%。颈前曲过大是本次调查的突出现象。腰前曲性差也无显著性意义。男女合并统计的均值为4.08cm,接近正常范围3–5cm的“中值”。分析结果表明,颈前曲与身高呈低度的正相关关系,相关系数r为0.24,但与体重、胸围、肺活量的相关系数都很小。     

专题文献的同被引聚类分析在表现学科专业发展历史的可靠性评价

将同被引聚类方法描述的某一专题历史发展与专家综述所描写的历史发展相比较,探讨同被引聚类方法在表现学科历史发展时的可靠性。     

运动对发育期小鼠脊髓前角细胞形态学的影响

选用 1 8～ 2 0日龄昆明种雄性同源小鼠 ,经配对 ,随机分配于运动组与对照组各 4只。按计划 ,运动组活动 8周后 ,同时处死两组小鼠。在脊髓腰骶膨大处取材 ,Niss/法染色 ,光学显微镜观察。结果表明 ,运动组前角细胞的胞核、核仁显著增大 (P <0 0 0 1 ) ;核质比增大 2 5 3 %。     

三通喉罩在无痛纤维支气管镜检查中的应用

目的：探讨三通喉罩在无痛纤维支气管镜检查中的安全性和可行性。方法：选择年龄65岁以下,ASAⅠ～Ⅱ级患者,按照自愿的原则分为静脉全麻组（IA）和局麻组（LA）。局麻组术前30min肌注鲁米那100mg＋阿托品0．5mg,检查前经环甲膜穿刺注射2％利多卡因3mL做表麻。静脉全麻组静脉快速诱导后插入TLMA,插入成功后,TLMA标准端口连接麻醉机,纤支镜从直管带密封口置入进行检查、活检。记录麻醉前（T0）、纤支镜过声门即刻（T1）、纤支镜探查／活检时（T2）、术毕5min（T3）各时间点的SBP、DBP、HR和SPO2;记录检查中发生低氧事件的情况、检查时间、苏醒时间。结果：19例无痛纤支镜顺利完成,患者术中循环平稳,SPO：变化于正常范围内,无呛咳、体动、低氧等不良事件,与局麻组比较差异有统计学意义（P〈0．05）,静脉全麻组患者和内镜医师满意度高。结论：TLMA应用于无痛纤支镜检查安全可靠、效果满意,能同时满足麻醉医师和内镜医师对气道的管理需要,具有临床应用价值。