GROUND REACTION FORCE AND KINEMATIC CHARACTERISTICS OF PIROUETTE IN BALLET IN FLAT SHOES VERSUS POINTE SHOES

The purpose of this study was to investigate the ground reaction force and kinematic variables in the ballet single turn called pirouette in both flat shoes and pointe shoes by skilled professional ballet dancers. Kinematic parameters of both legs and ground reaction force were obtained from eight skilled ballet dancers through a threedimensional motion analysis. We found significant increased ground reaction force and significant increased range of motion for both legs only for hip joint in pointe shoes, while angular velocity of hip, knee and ankle joint in pointe shoes were significantly greater in pointe shoes than those in flat shoes. From the results of this study, it is indicated that performing a single pirouette in pointe shoes would increase in ground reaction force associated with greater joint range of motion and angular velocity of lower extremity

生医学的応用を目指した温度応答型生分解性インジェクタブルポリマーの設計

関西大

THE EFFECT OF FATIGUE ON PEAK GROUND REACTION FORCE AND LOWER EXTREMITY KINEMATICS DURING SINGLE-LEG LANDING IN DANCERS

The purpose of this study was to examine the effect of fatigue on peak vertical ground reaction force and lower extremity kinematics during single-leg landing in dancers and non-dancers. Subjects (n=20) were divided into two groups; Dance group (n=10) and Control group (n=10). Subjects performed single-leg drop landing from a 30 cm platform before and after fatigue protocol. Before fatigue protocol, dancers showed significant longer time between initial contact and the maximum ground reaction force achieved compared with the controls. After fatigue protocol, there was significant increase in peak ground reaction force during landing for both dancers and controls. Both groups also showed significant increase in hip and knee flexion after fatigue protocol

Archaeological Practice and Social Movements : Ethnography of Jomon Archaeology and the Public

This article examines the relationship between archaeological practices and the public , focusing on the interaction of prehistoric Jomon archaeology and present-day social movements in Japan. Where previous studies have emphasized the social influences upon archaeological practices and interpretations, this article seeks to understand how archaeology shapes ideological discourses, stimulates cultural activities, and builds new landscapes in the present. Three case studies are presented that show how “the Jomon” has become a flexible symbol that supports left-wing ideologies and associated environmental and anti-nuclear activism, inspires discursive art-based social movements that look to the Jomon as a source of cultural “roots,” and helps accelerate existing social movements such as rural revitalization and environmental conservation movements. Broadening the attempts in this article to diverse research subjects contributes to establishing a model for anthropological approaches to the study of archaeology as cultural resources