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Full-Text Articles in Physiology
A Critical Evaluation Of The Biological Construct Skeletal Muscle Hypertrophy: Size Matters But So Does The Measurement, Cody T. Haun, Christopher G. Vann, Brandon M. Roberts, Andrew D. Vigotsky, Brad J. Schoenfeld, Michael D. Roberts
A Critical Evaluation Of The Biological Construct Skeletal Muscle Hypertrophy: Size Matters But So Does The Measurement, Cody T. Haun, Christopher G. Vann, Brandon M. Roberts, Andrew D. Vigotsky, Brad J. Schoenfeld, Michael D. Roberts
Publications and Research
Skeletal muscle is highly adaptable and has consistently been shown to morphologically respond to exercise training. Skeletal muscle growth during periods of resistance training has traditionally been referred to as skeletal muscle hypertrophy, and this manifests as increases in muscle mass, muscle thickness, muscle area, muscle volume, and muscle fiber cross-sectional area (fCSA). Delicate electron microscopy and biochemical techniques have also been used to demonstrate that resistance exercise promotes ultrastructural adaptations within muscle fibers. Decades of research in this area of exercise physiology have promulgated a widespread hypothetical model of training-induced skeletal muscle hypertrophy; specifically, fCSA increases are accompanied by …
Physiological Differences Between Low Versus High Skeletal Muscle Hypertrophic Responders To Resistance Exercise Training: Current Perspectives And Future Research Directions, Michael D. Roberts, Cody T. Haun, Christopher B. Mobley, Petey W. Mumford, Matthew A. Romero, Paul A. Roberson, Christopher G. Vann, John J. Mccarthy
Physiological Differences Between Low Versus High Skeletal Muscle Hypertrophic Responders To Resistance Exercise Training: Current Perspectives And Future Research Directions, Michael D. Roberts, Cody T. Haun, Christopher B. Mobley, Petey W. Mumford, Matthew A. Romero, Paul A. Roberson, Christopher G. Vann, John J. Mccarthy
Physiology Faculty Publications
Numerous reports suggest there are low and high skeletal muscle hypertrophic responders following weeks to months of structured resistance exercise training (referred to as low and high responders herein). Specifically, divergent alterations in muscle fiber cross sectional area (fCSA), vastus lateralis thickness, and whole body lean tissue mass have been shown to occur in high versus low responders. Differential responses in ribosome biogenesis and subsequent protein synthetic rates during training seemingly explain some of this individual variation in humans, and mechanistic in vitro and rodent studies provide further evidence that ribosome biogenesis is critical for muscle hypertrophy. High responders may …
Biology Of Exosomes And Their Microrna Cargos In Human And Bovine Milk, Amy Lynn Leiferman
Biology Of Exosomes And Their Microrna Cargos In Human And Bovine Milk, Amy Lynn Leiferman
College of Education and Human Sciences: Dissertations, Theses, and Student Research
Exosomes are small, cargo-containing vesicles secreted by cells to facilitate intercellular communication. Of exosome cargos, microRNAs are especially interesting because of their involvement in gene regulation. Recently, our lab has shown that exosomes and their microRNA cargo are absorbed through the diet and elicit effects exogenously. Human and animal milk contain exosomes, which may have implications in infant and adult nutrition. There is evidence that bovine milk exosomes enhance growth of murine C2C12 myotube cell cultures, but whether this translates to muscle in vivo is unknown. The USDA National Nutrient Database for Standard Reference is lacking up-to-date information about human …
The Role Of Mmp-2, 9, And 13, In The Regulation Of Skeltal Muscle Hypertrophy Following Functional Overload, Reilly Fitzpatrick
The Role Of Mmp-2, 9, And 13, In The Regulation Of Skeltal Muscle Hypertrophy Following Functional Overload, Reilly Fitzpatrick
Summer Research
PURPOSE: Skeletal muscle is the most abundant tissue in vertebrates that functions primarily to generate locomotion, and exhibits a high degree of structural and functional plasticity that is largely dependent on the level of activity placed on it. Recent studies have shown that a family of enzymes known as matrix metalloproteinases (MMPs) play an important role in regulating this plasticity. Specifically, MMP-2 and MMP-9 degrade components of the extracellular matrix (ECM) surrounding muscle fiber during periods of growth and repair. However, the mechanisms by which these MMPs mediate this response and how each contributes to muscle repair and remodeling remains …