Education Commons^™

Α1-Adrenergic Responsiveness In Human Skeletal Muscle Feed Arteries: The Impact Of Reducing Extracellular Ph, S. J. Ives, R. H. I. Andtbacka, R. D. Noyes, R. Garrett Morgan, J. R. Gifford, Song-Young Park, J. David Symons, Russell S. Richardson

Health and Kinesiology Faculty Publications

• What is the central question of this study?

  In human arteries involved in the regulation of muscle blood flow, there is a lack of data about whether acidosis alters vascular sensitivity to vasoactive agents, as well as altering endothelium dependent vasorelaxation. Little is known about the interaction of metabolites and vascular function in human skeletal muscle feed arteries.

• •

  What is the main finding and its importance?

  Increasing acidosis attenuated the response and sensitivity of the arteries to phenylephrine; this effect was selective to the receptor over smooth muscle.

  Acidosis did not alter endothelium dependent vasorelaxation. Impaired vasoconstriction coupled with …

  ---

  Go to article

Yoga Training Improves Metabolic Parameters In Obese Boys, Dae Yun Seo, Sungryul Lee, Arturo Figueroa, Hyoung Kyu Kim, Yeong Ho Baek, Yi Sub Kwak, Nari Kim, Tae Hoon Choi, Byoung Doo Rhee, Kyung-Soo Kim, Byung Joo Park, Song-Young Park, Jin Han

Health and Kinesiology Faculty Publications

Yoga has been known to have stimulatory or inhibitory effects on the metabolic parameters and to be uncomplicated therapy for obesity. The purpose of the present study was to test the effect of an 8-week of yoga-asana training on body composition, lipid profile, and insulin resistance (IR) in obese adolescent boys. Twenty volunteers with body mass index (BMI) greater than the 95th percentile were randomly assigned to yoga (age 14.7±0.5 years, n=10) and control groups (age 14.6±1.0 years, n=10). The yoga group performed exercises three times per week at 40~60% of heart-rate reserve (HRR) for 8 weeks. IR was determined …

Human Skeletal Muscle Feed Arteries: Evidence Of Regulatory Potential, S. J. Ives, R. H. I. Andtbacka, Song-Young Park, A. J. Donato, J. R. Gifford, R. D. Noyes, L. A. Lesniewski, R. S. Richardson

Health and Kinesiology Faculty Publications

Aim

Recently, it has been recognized that human skeletal muscle feed arteries can be harvested during exploratory surgery for melanoma. This approach provides vessels for in vitro study from a wide spectrum of relatively healthy humans. Although, the regulatory role of skeletal muscle feed arteries in rodent models has been documented, whether such vessels in humans possess this functionality is unknown.

Methods

Therefore, skeletal muscle feed arteries (~950 μm OD) from 10 humans (48 ± 4, 27–64 years) were studied using pressure myography. Vessel function was assessed using potassium chloride (KCl), phenylephrine (PE), acetylcholine (ACh) and sodium nitroprusside (SNP) concentration–response …

Whole-Body Vibration Training Reduces Arterial Stiffness, Blood Pressure And Sympathovagal Balance In Young Overweight/Obese Women, Arturo Figueroa, Ryan Gil, Alexei Wong, Shirin Hooshmand, Song-Young Park, Florence Vicil, Marcos A. Sanchez-Gonzalez

Health and Kinesiology Faculty Publications

Obesity is associated with early cardiovascular dysfunction and reduced muscle strength. Whole-body vibration (WBV) training may improve arterial function and muscle strength. The effects of WBV training on arterial stiffness (brachial-ankle pulse wave velocity, baPWV), wave reflection (augmentation index, AIx), brachial systolic blood pressure (bSBP), aortic systolic blood pressure (aSBP), heart rate variability, and muscle strength (one-repetition maximum, 1RM) were examined in 10 young (21±2 year) overweight/obese women (body mass index, BMI=29.9±0.8 kg m–2). Participants were randomized to a 6-week WBV training or non-exercising control (CON) period in a crossover design. WBV training (3 days × week) consisted of static …