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首页> 外文期刊>Applied Ergonomics >Effect of time of day on the vertical spinal creep response
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Effect of time of day on the vertical spinal creep response

机译：一天中的时间对垂直脊骨蠕变反应的影响

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Vertical spinal creep (VSC) is height loss during sustained postures over a set period of time. While total stature has been demonstrated to decrease throughout the day, whether a diurnal effect applies to the VSC response has not been reported. The aim of this study was to investigate whether time of day had an effect on the magnitude of the VSC response in young subjects asymptomatic for musculoskeletal pathologies. The VSC response was recorded over 25 min while subjects remained seated on the stadiometer, at three times (morning, midday and afternoon) on the same day, in 48 asymptomatic volunteers aged 20-39 years. While no significant differences were calculated for the magnitude of the VSC responses on the three occasions of testing, differences in magnitude of VSC response may have been confounded by preloading activities. Where magnitude of the VSC response is the primary outcome measure, measurement protocols should control preloading activities and continue to conduct measurements at the same time of day, until further studies conclusively refute the existence of a diurnal effect.
机译：垂直脊柱蠕动（VSC）是在设定的时间段内持续姿势期间的身高下降。虽然已经证明全身矮胖全天都在下降，但尚未报道昼夜效应是否适用于VSC反应。这项研究的目的是调查一天中的时间是否对无症状的肌肉骨骼病变的年轻受试者的VSC反应强度产生影响。在48名20-39岁无症状志愿者中，受试者在同一天分别坐了3次（上午，中午和下午），在25分钟内记录了VSC反应。虽然在三种测试情况下未计算出VSC响应幅度的显着差异，但预加载活动可能会混淆了VSC响应幅度的差异。如果VSC反应的幅度是主要的结局指标，则测量方案应控制预负荷活动并在一天的同一时间继续进行测量，直到进一步的研究最终驳斥了昼夜效应的存在。

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