Effect of the Fastskin[registered trademark symbol] swimsuit on physiological and biomechanical responses of freestyle swimming

2001 ◽  
Author(s):  
Benjamin Scott Roberts
Keyword(s):  
Registered Trademark ◽  
Biomechanical Responses

scholarly journals Male and Female Cervical Spine Biomechanics and Anatomy: Implication for Scaling Injury Criteria

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Narayan Yoganandan ◽  
Cameron R. Bass ◽  
Liming Voo ◽  
Frank A. Pintar
Keyword(s):  
Cervical Spine ◽  
Female Population ◽  
Male And Female ◽  
Injury Criteria ◽  
Motion Responses ◽  
Geometric Scaling ◽  
Biomechanical Responses ◽  
The Difference ◽  
Female Specific ◽  
The Military

There is an increased need to develop female-specific injury criteria and anthropomorphic test devices (dummies) for military and automotive environments, especially as women take occupational roles traditionally reserved for men. Although some exhaustive reviews on the biomechanics and injuries of the human spine have appeared in clinical and bioengineering literatures, focus has been largely ignored on the difference between male and female cervical spine responses and characteristics. Current neck injury criteria for automotive dummies for assessing crashworthiness and occupant safety are obtained from animal and human cadaver experiments, computational modeling, and human volunteer studies. They are also used in the military. Since the average human female spines are smaller than average male spines, metrics specific to the female population may be derived using simple geometric scaling, based on the assumption that male and female spines are geometrically scalable. However, as described in this technical brief, studies have shown that the biomechanical responses between males and females do not obey strict geometric similitude. Anatomical differences in terms of the structural component geometry are also different between the two cervical spines. Postural, physiological, and motion responses under automotive scenarios are also different. This technical brief, focused on such nonuniform differences, underscores the need to conduct female spine-specific evaluations/experiments to derive injury criteria for this important group of the population.

scholarly journals Frequency spectrum of the human head–neck to mechanical vibrations

2017 ◽  
Vol 37 (3) ◽  
pp. 611-618 ◽  
Author(s):  
Bin Yang ◽  
Zheng Shi ◽  
Qun Wang ◽  
Feng Xiao ◽  
Tong-Tong Gu ◽  
...  
Keyword(s):  
Finite Element ◽  
Frequency Spectrum ◽  
Mechanical Vibration ◽  
Three Dimensional ◽  
Human Head ◽  
Element Model ◽  
Mode Shapes ◽  
Joint Disorder ◽  
Biomechanical Responses ◽  
Head Neck

This study is based on a real finite element human head–neck model and concentrates on its numerical vibration characteristic. Frequency spectrum and mode shapes of the finite element model of human head–neck under mechanical vibration have been calculated. These vibration characteristics are in good agreement with the previous studies. The simulated fundamental frequency of 35.25 Hz is fairly similar to the published documents, and rarely reported modal responses such as “mastication” and flipping of nasal lateral cartilages modes, however, are introduced by our three-dimensional modal analysis. These additional modes may be of interest to surgeons or clinicians who are specialized in temporomandibular or rhinoplasty joint disorder. Modal validation in terms of modal shapes proposes a necessity for elaborate modeling to identify each individual part’s extra frequencies. Furthermore, it also studies the influence of damping on resonant frequencies and biomechanical responses. It is discovered that damping has an inverse proportionality between damping effect on natural frequency and that on biomechanical responses.

scholarly journals Effects of Running Surface Stiffness on Three-Segment Foot Kinematics Responses with Different Shod Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Noor Arifah Azwani Abdul Yamin ◽  
Khairul Salleh Basaruddin ◽  
Ahmad Faizal Salleh ◽  
Mohammad Shahril Salim ◽  
Wan Zuki Azman Wan Muhamad
Keyword(s):  
Plantar Fascia ◽  
Joint Rotation ◽  
Foot Kinematics ◽  
Surface Stiffness ◽  
Flat Base ◽  
Running Shoes ◽  
Stance Time ◽  
Biomechanical Responses ◽  
Artificial Grass ◽  
Male Subjects

Objective. The aim of this study was to investigate the effects of surface stiffness on multisegment foot kinematics and temporal parameters during running. Methods. Eighteen male subjects ran on three different surfaces (i.e., concrete, artificial grass, and rubber) in both heeled running shoes (HS) and minimal running shoes (MS). Both these shoes had dissimilar sole profiles. The heeled shoes had a higher sole at the heel, a thick base, and arch support, whereas the minimal shoes had a flat base sole. Indeed, the studied biomechanical parameters responded differently in the different footwear during running. Subjects ran in recreational mode speed while 3D foot kinematics (i.e., joint rotation and peak medial longitudinal arch (MLA) angle) were determined using a motion capture system (Qualysis, Gothenburg, Sweden). Information on stance time and plantar fascia strain (PFS) was also collected. Results. Running on different surface stiffness was found to significantly affect the peak MLA angles and stance times for both HS and MS conditions. However, the results showed that the joint rotation angles were not sensitive to surface stiffness. Also, PFS showed no relationship with surface stiffness, as the results were varied as the surface stiffness was changed. Conclusion. The surface stiffness significantly contributed towards the effects of peak MLA angle and stance time. These findings may enhance the understanding of biomechanical responses on various running surfaces stiffness in different shoe conditions.

scholarly journals REGISTERED TRADEMARK OF FORENSIC MEDICINE

2020 ◽  
Vol 6 (1) ◽  
pp. 60-62
Author(s):  
V. A. Klevno ◽  
N. V. Tarasova ◽  
E. V. Kononov ◽  
A. V. Goryachev
Keyword(s):  
Intellectual Property ◽  
Forensic Medicine ◽  
Registered Trademark ◽  
Frontiers Of Science

The Federal Service for Intellectual Property (Rospatent) registered a trademark of forensic medicine and issued a nationally recognised certificate to the Association of Forensic Medical Experts. The logo draws on the idea of combining continuity and the desire to develop on the modern frontiers of science and practice, in accordance with existing Requirements and Rules.

scholarly journals Shear-induced endothelial NOS activation and remodeling via heparan sulfate, glypican-1, and syndecan-1

2014 ◽  
Vol 6 (3) ◽  
pp. 338-347 ◽  
Author(s):  
Eno E. Ebong ◽  
Sandra V. Lopez-Quintero ◽  
Victor Rizzo ◽  
David C. Spray ◽  
John M. Tarbell
Keyword(s):  
Endothelial Cell ◽  
Heparan Sulfate ◽  
Fluid Forces ◽  
Cytoskeleton Reorganization ◽  
Biomechanical Responses

This work uncovers new mechanisms of endothelial cell glycocalyx mediated conversion of fluid forces into diverse biomolecular and biomechanical responses, such as caveola associated signaling and cytoskeleton reorganization.

Physiological and biomechanical responses to a prolonged repetitive asymmetric lifting activity

Ergonomics ◽  
2014 ◽  
Vol 57 (4) ◽  
pp. 575-588 ◽  
Author(s):  
Jay P. Mehta ◽  
Steven A. Lavender ◽  
Richard J. Jagacinski
Keyword(s):  
Biomechanical Responses ◽  
Asymmetric Lifting
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