Impact of postural variation on hand measurements: three-dimensional anatomical analysis (Laboratory Protocol) v1 (protocols.io.btpfnmjn)

protocols.io ◽  
2021 ◽  
Author(s):  
Mei-ying Kwan ◽  
Kit Lun ◽  
Lung Chow ◽  
Annie Yu ◽  
Sun-pui Ng ◽  
...  
2021 ◽  
Vol 12 (3) ◽  
pp. 78-83
Author(s):  
Abuselim Zagidovich Vezirkhanov ◽  
Petr Alexandrovich Sysoev ◽  
Edgar Sabirovich Kafarov

2021 ◽  
Vol 11 (11) ◽  
pp. 1497
Author(s):  
Tahere Reha ◽  
Colm McNabb ◽  
Kevin Netto ◽  
Paul Davey ◽  
Andrew P. Lavender

Rugby Union is a popular sport played by males and females worldwide, from junior to elite levels. The highly physical skill of tackling occurs every few seconds throughout a match and various injuries associated with tackling are relatively common. Of particular interest are head injuries that result in a concussion. Recently, repeated non-injurious head impacts in sport have attracted the attention of researchers interested in brain health. Therefore, this study assessed head movement during repeated rugby tackle drills among experienced Rugby Union players. Experienced male and female participants performed 15 1-on-1 tackles in a motion analysis laboratory to measure the head movements of the ball carrier and tackler during each tackle, using three-dimensional motion capture. The average peak acceleration of the head for ball carriers was 28.9 ± 24.08 g and 36.67 ± 28.91 g for the tacklers. This study found that the type of head impacts common while performing a tackle in Rugby Union are similar to those experienced by soccer players during heading, which has been found to alter brain function that lasts hours after the event. This has important implications for player health and suggests that mitigation strategies should be considered for Rugby Union.


2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Mahvash Jebeli ◽  
Alireza Bilesan ◽  
Ahmadreza Arshi

AbstractThe currently available commercial motion capture systems are constrained by space requirement and thus pose difficulties when used in developing kinematic description of human movements within the existing manufacturing and production cells. The Kinect sensor does not share similar limitations but it is not as accurate. The proposition made in this article is to adopt the Kinect sensor in to facilitate implementation of Health Engineering concepts to industrial environments. This article is an evaluation of the Kinect sensor accuracy when providing three dimensional kinematic data. The sensor is thus utilized to assist in modeling and simulation of worker performance within an industrial cell. For this purpose, Kinect 3D data was compared to that of Vicon motion capture system in a gait analysis laboratory. Results indicated that the Kinect sensor exhibited a coefficient of determination of 0.9996 on the depth axis and 0.9849 along the horizontal axis and 0.2767 on vertical axis. The results prove the competency of the Kinect sensor to be used in the industrial environments.


1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.


Sign in / Sign up

Export Citation Format

Share Document