Publications by authors named "Do-Houn Kim"

Vitamin D (VitD) possesses antiadipogenic and ergogenic properties that could be effective to counteract obesity-related adverse health consequences. Therefore, our overall hypothesis was that VitD could ameliorate obesity-induced insulin resistance, systemic inflammation, and loss of skeletal muscle mass and function in an obesity animal model, p62-deficient mice. Furthermore, it was hypothesized that resistance exercise training (RT) could enhance the benefits of VitD by upregulating protein expression of vitamin D receptor in skeletal muscle.

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Creatine is a naturally occurring compound, functioning in conjunction with creatine kinase to play a quintessential role in both cellular energy provision and intracellular energy shuttling. An extensive body of literature solidifies the plethora of ergogenic benefits gained following dietary creatine supplementation; however, recent findings have further indicated a potential therapeutic role for creatine in several pathologies such as myopathies, neurodegenerative disorders, metabolic disturbances, chronic kidney disease and inflammatory diseases. Furthermore, creatine has been found to exhibit non-energy-related properties, such as serving as a potential antioxidant and anti-inflammatory.

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Vitamin D is known to elicit a vasoprotective effect, while vitamin D deficiency is a risk factor for endothelial dysfunction (ED). ED is characterized by reduced bioavailability of a potent endothelium-dependent vasodilator, nitric oxide (NO), and is an early event in the development of atherosclerosis. In endothelial cells, vitamin D regulates NO synthesis by mediating the activity of the endothelial NO synthase (eNOS).

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Article Synopsis
  • NADPH oxidases (NOX) are enzymes that generate reactive oxygen species (ROS), which are crucial in causing vascular dysfunction, particularly in endothelial cells lining blood vessels.* -
  • Endothelial cells produce nitric oxide (NO) for proper blood flow; however, oxidative stress can disrupt this function, leading to conditions like cardiovascular disease and type 2 diabetes.* -
  • The review intends to explain how normal endothelial functions work and emphasize how NOX contributes to endothelial dysfunction, especially in the context of impaired glucose regulation.*
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Background: This investigation evaluated the efficacy by which resistance training enhances body composition, metabolic, and functional outcomes for obese patients undergoing a 12-week medically supervised hypocaloric treatment.

Methods: This was a single-blind, randomized, parallel-group prospective trial. Morbidly obese patients were prescribed a 12-week proprietary very low calorie diet (VLCD) treatment (Optifast) with supplemental protein (1120 kcals/day) and were placed in one of two groups for 14 weeks: 1) Standard Treatment Control (CON) (n = 5) or 2) Resistance Training (RT) (n = 6).

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Introduction: Type 2 diabetes (T2D) in elderly patients is associated with accelerated loss of skeletal muscle mass and strength. However, there are few meta-analysis reviews which investigate the effects of resistance training (RT) on glycemic control and skeletal muscle in the patients.

Methods: Three electronic databases were searched (from the earliest date available to November 2016).

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Purpose: The appropriate mode of exercise training for cancer cachexia is not well-established. Using the colon-26 (C26) mouse model of cancer cachexia, we defined and compared the skeletal muscle responses to aerobic and resistance training.

Methods: Twelve-month old Balb/c mice were initially assigned to control, aerobic training (AT; wheel running), or resistance training (RT; ladder climbing) (n=16-17/group).

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