In this paper, a dynamic humanoid with a stair case model is designed to achieve a dynamically stable stair climbing gait pattern, and sequences of stair climbing locomotion analysis (weight acceptance, pull up, forward continuance, foot clearance and foot placement) are presented. A suitable trajectory control strategy is developed for the lower limb’s joints (hips, knees, ankles) during stair...

BACKGROUND Stair climbing is an accessible activity with proven health benefits. This article summarizes the effectiveness of mall-based stair-climbing interventions, while controlling for, and examining, potential moderators of stair/escalator choice. METHODS Six comparable studies were identified, which used poster/ banner prompts to promote stair choice. Original data were combined and ana...

Recently, new approach called Stair-Diagonal used for solving a tridiagonal system by Jawad[A. J. Jawad and et.al., Solving a Tri-Diagonal System of Size N Equations by Stair-Diagonal Approach, Adv. Sci. Eng. Med. , 4(2012) 171-175]. In this paper, we developed a Stair-Diagonal Approach in order to remove the cases where the Stair-Diagonal Approach fails. Also, we describe a symbolic computatio...

In this paper we examine whether a common perceptual parameter is available for guiding old adults, young adults and children in climbing the highest stair mountable in a bipedal fashion. Previous works have shown that the ratio between the height of the stair and the hip height was the body-scaled invariance adopted as information for selecting the highest stair by young adults [Journal of Exp...

OBJECTIVES To demonstrate the usefulness of computer simulation techniques in the investigation of pediatric stair falls. Since stair falls are a common falsely reported injury scenario in child abuse, our specific aim was to investigate the influence of stair characteristics on injury biomechanics of pediatric stair falls by using a computer simulation model. Our long-term goal is to use knowl...

Previous interventions have successfully increased levels of stair climbing in publicaccess settings (e.g. malls). This study used robust methods to establish the magnitude of intervention effects amongst a specific target group – the overweight. Ascending stair/escalator users (N=20,807) were observed in a mall. A two-week baseline was followed by a five-week intervention in which message bann...

OBJECTIVES To examine specific behaviors used by older adults while ascending and descending stairs and to assess the relationships between confidence and stair performance. DESIGN Cross-sectional. SETTING Center for Locomotion Studies, The Pennsylvania State University. PARTICIPANTS Sixteen male (mean age=82.7, range= 77-89) and 16 female (mean age=82.2, range=77-87) community-dwelling a...

Since the discovery of pregnancy reversal by Dale) and Cushny,2) it is widely believed that progesterone plays a cardinal role for the maintenance of pregnancy in mammals by keeping the estrogen-dominated uterus quiescent and hyposensi tive to any given stimulation till term. If so, what is the mode of action of pro gesterone on the uterine muscle? Taking advantage of findings and methods used ...

OBJECTIVE Posttraumatic stress disorder (PTSD) related to childhood abuse is associated with features of affect regulation and interpersonal disturbances that substantially contribute to impairment. Existing treatments do not address these problems or the difficulties they may pose in the exploration of trauma memories, an efficacious and frequently recommended approach to resolving PTSD. The a...