title: Analysis of the strain of the great saphenous vein in motion.
abstract: This research probes into the strain changes of the great saphenous vein (GSV) during step exercises. Microelectromechanical Systems (MEMS) were used to process and develop Gauge Factors (GF=4.79 ± 0.247), 5 males and 5 females with an average age of 20 ± 0.6 years were asked to engage in step exercises (with step height of 25 cm), and the strain changes of the GSV in the lower limbs of the dorsal venous arch were measured. The results show that the effect the exercise has on the vein vessel is not prominent within 0.87 min; between 0.87 and 13.71 min, the average rates of the strain changes in the GSV show a linear increase; after 13.4 ± 0.31 min, the linear curve of the increase rate is alleviated. This shows that to prevent varicose veins in the lower limbs, continuous exercise between 0.87 to 13.71 minutes has better effects in training. Exercising for over 13.71 minutes has its beneficial effects, but the effects are considerably less obvious than exercising for 0.87~13.71 min.
authors.affiliation: Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, 415, Chien Kung Road, Sanmin Dist., Kaohsiung 80778, Taiwan, R.O.C.
authors.forename: Ming-Chang
authors.initials: MC
authors.lastname: Tsai
authors.forename: Shyh-Chour
authors.initials: SC
authors.lastname: Huang
mesh_terms: D002138:Calibration; D002244:Carbon / Q000737:chemistry; D017097:Electric Impedance; D004867:Equipment Design; D015444:Exercise; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008855:Microscopy, Electron, Scanning; D009068:Movement; D053758:Nanoparticles / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D012501:Saphenous Vein; D013314:Stress, Mechanical; D013997:Time Factors; D014648:Varicose Veins / Q000517:prevention & control; D014992:Xylenes / Q000737:chemistry; D055815:Young Adult
chemical_list: D011108:Polymers; D014992:Xylenes; C011055:parylene; D002244:Carbon
keywords: Great saphenous vein; carbon nanonets; gauge factor; strain