返回Google圖書搜尋

Lifting With A Round-Back Is Dangerous!

其他書名	How Beliefs Might Affect Lumbar Spine Motion During Object Lifting In Pain-Free Individuals
出版	Morressier, 2017
URL	http://books.google.com.hk/books?id=dPe1zQEACAAJ&hl=&source=gbs_api

註釋Background and aimsu201cLifting an object with a round back is dangerous!u201d This is a widespread belief among the general public, which might influence an individualu2019s lifting technique. We therefore aimed at investigating the relationship between the perceived threat value of lifting with a round back and lumbar spine motion during repetitive lifting maneuvers. MethodsTwenty pain-free adults (mean age=32.4y, 12 females) completed the Photograph-Daily-Activities-Series-Short-Electronic-Version (PHODA-total), including pictures showing a person lifting a flowerpot with a round- and straight back (PHODA-round-back and PHODA-straight-back, respectively). Subsequently, participants were equipped with 58 retro-reflective markers and asked to lift a 5kg-box. Marker data were collected with a 20-camera optical-motion-capture system and used to calculate sagittal spinal curvature angles. To investigate the relationship between PHODA scores (0 u2018Not harmful at allu2019,100 u2018Extremely harmfulu2019) and kinematics, linear regression analyses were carried out using one-dimensional Statistical-Parametric-Mapping (alpha-level=0.05).ResultsMean scores were 20.68(SD=u00b113.87) for PHODA-total, 13.95(SD=u00b111.39) for PHODA-straight-back and 43.1(SD=u00b127.21) for PHODA-round-back, respectively. Linear regression analysis revealed a negative relationship between the PHODA-round-back score and lumbar curvature angles during 0-72% of the lifting-up (-0.53u2264ru2265-0.57,p=0.010) and 28-73% of the putting-down cycles (-0.52u2264ru2265-0.54,p=0.026). No relationships were found for PHODA-total and PHODA-straight-back scores. ConclusionsHealthy adults with u201cround back dangeru201d beliefs demonstrated less lumbar spine flexion during distinct time periods of the lifting maneuver, potentially driven by lumbar stiffening. This might predispose these individuals for a lumbar stiffening strategy when they experience low back pain, potentially aggravating symptoms through pronociceptive triggers such as increased paraspinal tissue loading and muscle fatigue.