Application of the gyrokinetic velocity moment theory in finite beta plasma

2020 ◽  
Vol 27 (10) ◽  
pp. 102307
Author(s):  
Debing Zhang ◽  
Yingfeng Xu ◽  
Limin Yu ◽  
Erbing Xue ◽  
Shuyu Zheng ◽  
...  
Keyword(s):  
Moment Theory ◽  
Velocity Moment

Comparison and Association of Neck Extensor Muscles’ Endurance and Postural Function in Subjects with and without Chronic Neck Pain – A Cross-Sectional Study

2021 ◽  
Author(s):  
Praveen Kumar Kandakurti ◽  
Ravi Shankar Reddy ◽  
Venkata Nagaraj Kakarparthy ◽  
Kanagaraj Rengaramanujam ◽  
Jaya Shanker Tedla ◽  
...  
Keyword(s):  
Neck Pain ◽  
Postural Control ◽  
Chronic Neck Pain ◽  
Cross Sectional Study ◽  
Control Measures ◽  
Endurance Capacity ◽  
Control Parameters ◽  
Sectional Study ◽  
Cross Sectional ◽  
Velocity Moment

Abstract Purpose Neck extensor endurance (NEE) and position sense are vital for maintaining cervical spine function and defects in these processes may be associated with impaired postural control in chronic neck pain (CNP) subjects. The study’s objectives are 1) to compare the cervical extensor endurance capability and postural control of CNP subjects with those of asymptomatic controls; 2) to investigate the association between NEE and postural control. Materials and Methods Sixty-four participants (38 asymptomatic, 38 with CNP) participated in this cross-sectional study. NEE was assessed using a clinical extensor endurance test. Under open and closed eyes conditions, postural control measures were tested with the Good Balance system. The postural control parameters were AP-velocity (mm/s), ML-velocity (mm/s) and Velocity moment (mm2). NEE capacity and postural control parameters were compared and correlated between asymptomatic and CNP subjects. Results and Discussion CNP subjects showed lower NEE capacity (p<0.001) and significantly larger AP-velocity (p<0.001), ML-velocity (p<0.001) and Velocity moment (p<0.001) than asymptomatic participants. NEE negatively correlated with AP-velocity (r=−0.51, p=0.001), ML-velocity (r=0.46, p=0.003) and velocity moment (r=0.38, p=0.020) in asymptomatic subjects in eyes open condition and no correlations in subjects with CNP. CNP subjects showed increased postural sway velocities and lowered extensor endurance capacity compared to asymptomatic participants. No correlations existed between NEE and postural control parameters in CNP subjects.

scholarly journals Reinforced (fibrous) bodies and moment theory of elasticity

2018 ◽  
Vol 71 (4) ◽  
pp. 69-79
Author(s):  
Самвел Оганесович Саркисян
Keyword(s):  
Theory Of Elasticity ◽  
Moment Theory
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