Ligament-Inspired Tough and Anisotropic Fibrous Gel Belt with Programed Shape Deformations via Dynamic Stretching

2021 ◽  
Vol 13 (16) ◽  
pp. 19291-19300
Author(s):  
Peiling Wei ◽  
Tao Chen ◽  
Guoyin Chen ◽  
Kai Hou ◽  
Meifang Zhu
Keyword(s):  
Dynamic Stretching ◽  
Shape Deformations

Acute effect of dynamic stretching or running on endurance running performance in well-trained male runners

2020 ◽  
Vol 179 (1-2) ◽  
Author(s):  
Taichi Yamaguchi ◽  
Kazuki Takizawa ◽  
Keisuke Shibata ◽  
Nobuyasu Tomabechi ◽  
Mina Samukawa ◽  
...  
Keyword(s):  
Acute Effect ◽  
Endurance Running ◽  
Running Performance ◽  
Dynamic Stretching ◽  
Endurance Running Performance

scholarly journals Analysis of Composite Structures in Curing Process for Shape Deformations and Shear Stress: Basis for Advanced Optimization

2021 ◽  
Vol 5 (2) ◽  
pp. 63
Author(s):  
Niraj Kumbhare ◽  
Reza Moheimani ◽  
Hamid Dalir
Keyword(s):  
Composite Structures ◽  
Latin Hypercube Sampling ◽  
Vital Role ◽  
Optimization Techniques ◽  
Design Parameters ◽  
Curing Process ◽  
Input Variables ◽  
Transient Thermal ◽  
Prototype Design ◽  
Shape Deformations

Identifying residual stresses and the distortions in composite structures during the curing process plays a vital role in coming up with necessary compensations in the dimensions of mold or prototypes and having precise and optimized parts for the manufacturing and assembly of composite structures. This paper presents an investigation into process-induced shape deformations in composite parts and structures, as well as a comparison of the analysis results to finalize design parameters with a minimum of deformation. A Latin hypercube sampling (LHS) method was used to generate the required random points of the input variables. These variables were then executed with the Ansys Composite Cure Simulation (ACCS) tool, which is an advanced tool used to find stress and distortion values using a three-step analysis, including Ansys Composite PrepPost, transient thermal analysis, and static structural analysis. The deformation results were further utilized to find an optimum design to manufacture a complex composite structure with the compensated dimensions. The simulation results of the ACCS tool are expected to be used by common optimization techniques to finalize a prototype design so that it can reduce common manufacturing errors like warpage, spring-in, and distortion.

scholarly journals Acute effect of static and dynamic stretching on tone and elasticity of hamstring muscle and on vertical jump performance in track-and-field athletes

2014 ◽  
Vol 20 (0) ◽  
pp. 48 ◽  
Author(s):  
Teet Meerits ◽  
Sebastian Bacchieri ◽  
Mati Pääsuke ◽  
Jaan Ereline ◽  
Antonio Cicchella ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Acute Effect ◽  
Track And Field ◽  
Hamstring Muscle ◽  
Jump Performance ◽  
Dynamic Stretching

scholarly journals Effect of Static and Dynamic Stretching on the Diurnal Variations of Jump Performance in Soccer Players

PLoS ONE ◽  
2013 ◽  
Vol 8 (8) ◽  
pp. e70534 ◽  
Author(s):  
Hamdi Chtourou ◽  
Asma Aloui ◽  
Omar Hammouda ◽  
Anis Chaouachi ◽  
Karim Chamari ◽  
...  
Keyword(s):  
Diurnal Variations ◽  
Soccer Players ◽  
Jump Performance ◽  
Dynamic Stretching

scholarly journals Vliv statických a dynamických protahovacích cvičení na rozsah kloubní pohyblivosti

2015 ◽  
Vol 9 (1) ◽  
pp. 25-31
Author(s):  
Hana Kabešová ◽  
Štefan Balkó
Keyword(s):  
Physical Education ◽  
Data Collection ◽  
Lower Limb ◽  
Dynamic Stretching ◽  
Before And After ◽  
Stretching Exercises

The aim of the study was to assess the effect of static and dynamic way of stretching the hamstrings in probands studying physical education and sport at UJEP. Flexibility was diagnosed through a modified Lassegueovy test (SLR). In the present study, we evaluated the differences between the angles of the back of the thigh in the dominant lower limb before and after the application of static and dynamic stretching exercises performed using SLR push or pull. For data collection were used video (2D), which was developed software Dartfish Team Pro Data. With this program were converted to values of the angle distance in centimeters and evaluated. The results showed that there were no significant differences in ROM when exposed to static and dynamic stretching method. Significant differences, however, showed between the initial and final angle dominant lower limb when exposed to dynamic stretching, where the movement was executed swing.

scholarly journals The Acute Effects of Dynamic and Static Stretching on Tennis Serve Targeting Performance

2019 ◽  
Vol 7 (4) ◽  
pp. 123
Author(s):  
Bulent Turna ◽  
Asuman Sahan ◽  
Bahar Yilmaz
Keyword(s):  
Wilcoxon Test ◽  
Static Stretching ◽  
Acute Effects ◽  
Warm Up ◽  
Dynamic Stretching ◽  
Paired Samples ◽  
Tennis Serve ◽  
Playing Time ◽  
Homogeneous Data ◽  
Stretching Exercises

The study investigates the acute effects of dynamic and static stretching on the tennis serve targeting performance of amateur tennis players. Twenty male athletes who were between the ages of 16-24 years and played tennis for at least 1 year (21.40±2.16 years, 181±0.06 cm, 71.85±7.42 kg, tennis playing time 1.55±0.88 years) voluntarily participated in the study.Prior to the pre-tests and after applying the traditional warm-up protocol, serve targeting test (STT) was applied to all participants. In the post-tests, STT was used after applying three different warm-up methods on three different days (48-hour rest interval). The warm-up stages included No Treatment (NT) (jogging, rally), Static Stretching (SS) and Dynamic Stretching (DS).In the statistical analysis, the homogeneity of the data was investigated using the Shapiro Wilk test. The Wilcoxon test was used to compare the pre-test and post-test results of the non-homogeneous data; Friedman test was used to compare the three different stretching methods with each other; in the paired comparisons of the groups, the paired samples t-test was used for the homogenous data and Wilcoxon test was used for the non-homogeneous data. In conclusion, stretching exercises before serving increased the serve targeting performance and the increase in the dynamic stretching exercises was higher than that in static stretching exercises.

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