Nine-month-old infants were tested at the precipice of safe and risky gaps in the surface of support. Their reaching and avoidance responses were compared in two postures, an experienced sitting posture and a less familiar crawling posture. The babies avoided reaching over risky gaps in the sitting posture but fell into risky gaps while attempting to reach in the crawling posture. This dissocia...

The influence of garment pressure on human physiological activities has attracted researchers from many areas. In this study, to investigate the effect of external pressure on skin blood flow (SBF) at lower limb in different postures, external pressure was exerted on lower limb in supine and sitting postures using sphygmomanometer. Five undergraduate male students volunteered to participate in ...

The effect of sitting posture on human biomechanical response to whole-body vibration (WBV) was investigated in this work. Two popular sitting postures in the construction industry, standard back supported and bent forward (unsupported), were considered in this study (N = 4). A six-degree-of-freedom man-rated vibration platform, a twelve-camera Vicon motion capture system, three AMTI force plat...

Pressure ulcers are a large problem in individuals who use a wheelchair for their mobility and have limited trunk stability and motor function. Because no relation between interface pressure and pressure ulcer development has been established and no clinical threshold for pressure ulcer development can be given, looking at the sitting behavior of nondisabled individuals is important. Nondisable...

BACKGROUND Spinal posture is commonly a focus in the assessment and clinical management of low back pain (LBP) patients. However, the link between spinal posture and LBP is not fully understood. Recent evidence suggests that considering regional, rather than total lumbar spine posture is important. The purpose of this study was to determine; if there are regional differences in habitual lumbar ...

Otolith organs have been shown to activate the sympathetic nervous system in the prone position by head-down rotation (HDR) in humans. To date, otolithic stimulation by HDR has not been comprehensively studied in the upright posture. The purpose of the present study was to determine whether otolithic stimulation increases muscle sympathetic nerve activity (MSNA) in the upright posture. It was h...

INTRODUCTION Adequate working posture is important for overall health. Inappropriate posture may increase fatigue, decrease efficiency, and eventually lead to injuries. OBJECTIVE The purpose was to examine posture positions used during dentistry work. METHODS In order to quantify different posture positions, we recorded muscle activity and positions of body segments. The position (inclinati...