Digital Commons Network^™

Practical Applications Of Biomechanical Principles In Resistance Training: Neuromuscular Factors And Relationships, Jason Lake, Paul A. Swinton, Justin Keogh

Justin Keogh

This paper is the second in our three part series examining how a variety of biomechanical principles and concepts have direct relevance to the prescription of resistance training for the general and athletic populations as well as for musculoskeletal injury rehabilitation. In this paper, we considered different neuromuscular characteristics of resistance exercise. We started by defining the causes of motion, discussing force and Newton’s second law of linear motion. This led to discussion of impulse, and how its relationship with momentum can be used to study force-time curves recorded from different ground-based resistance exercises. This enables the sports biomechanist to …

Ampk Activation: A Therapeutic Target For Type 2 Diabetes?, Kimberly A. Coughlan, Rudy Valentine, Neil B. Ruderman, Asish K. Saha

Rudy Valentine

Cardiorespiratory Fitness Reduces The Risk Of Incident Hypertension Associated With A Parental History Of Hypertension., Robin Shook, D. C. Lee, X. Sui, V. Prasad, S. P. Hooker, T. S. Church, S. N. Blair

Robin Shook

Family history of hypertension increases the risk of an individual to develop hypertension, whereas moderate-to-high cardiorespiratory fitness has the opposite effect. However, the joint association of each on the development of hypertension is not well understood. We studied fitness and incident hypertension in 6278 participants who were given a preventative medical examination. Thirty-three percent reported a parent with hypertension, and there were 1545 cases of incident hypertension after a mean of 4.7 years. The presence of parental hypertension was associated with a 28% higher risk of developing hypertension after adjustments for age, sex, and examination year. After further adjustments for …

The Independent Association Between Diet Quality And Body Composition, Clemens Drenowatz, Robin Shook, Gregory A. Hand, James R. Hebert, Steven N. Blair

Robin Shook

Excess body weight is associated with an imbalance between energy expenditure and dietary intake but evidence on the association between diet quality and body composition remains equivocal. Rather than relying on differences in diet quality between overweight/obese and normal weight adults, this study examined the association between the Healthy Eating Index 2010 (HEI-2010) and body fatness on a continuous scale, independent of physical activity (PA). Further the association between components of the HEI-2010 and risk for overweight/obesity was explored. 407 adults (27.6 6 3.7 years) provided at least two 24-hour diet recalls over a period of 14 days, which were …

Moderate Cardiorespiratory Fitness Is Positively Associated With Resting Metabolic Rate In Young Adults., Robin Shook, G. A. Hand, A. E. Paluch, X. Wang, R. Moran, J. R. Hebert, C. J. Lavie, S. N. Blair

Robin Shook

OBJECTIVE: To determine whether moderate cardiorespiratory fitness (CRF) or moderate to vigorous physical activity (MVPA) is associated with elevations in resting metabolic rate (RMR) similar to findings previously observed in endurance athletes. PARTICIPANTS AND METHODS: Using a cross-sectional design, we measured CRF, RMR, body composition, energy expenditure, and time in MVPA via an arm-based activity monitor in 423 young adults (mean age, 27.6 years). Based on the results of a fitness test, participants were classified into CRF tertiles (low, moderate, or high) by sex. RESULTS: There were significant differences among the low-, moderate-, and high-CRF groups for mean ± SD …

Exercise Science Students Get First-Hand Experience, Valerie Wherley

Valerie Wherley

Sacred Heart University’s exercise science students have been busy this semester participating in various service-learning initiatives and clinics. During the semester, students are asked to complete 20 hours of service learning work so they get first-hand experience working with children and adolescents, engaging them in physical activity and sports and seeing classroom and textbook concepts come to life.

Top 10 Research Questions Related To Energy Balance, Robin P. Shook, Gregory A. Hand, Steven N. Blair

Robin Shook

Obesity is the result of a mismatch between the amount of calories consumed and the amount of calories expended during an extended period of time. This relationship is described by the energy balance equation, which states the rate of change in energy storage depots in the body are equal to the rate of energy intake minus the rate of energy expenditure. Although this relationship may appear easy to understand based on simple mathematics, in reality, a variety of known and unknown systems influence the components of energy balance (energy storage, energy intake, energy expenditure). Clearly, if a complete understanding of …

Low Fitness Partially Explains Resting Metabolic Rate Differences Between African American And White Women., Robin Shook, G. A. Hand, X. Wang, A. E. Paluch, R. Moran, J. R. Hebert, D. L. Swift, C. J. Lavie, S. N. Blair

Robin Shook

BACKGROUND: High levels of obesity among African American women have been hypothesized to be partially resultant from a lower resting metabolic rate compared with white women. The aim of the current study was to determine if differences in cardiorespiratory fitness and moderate-to-vigorous physical activity are associated with differences in resting metabolic rate among free-living young adult African American women and white women. METHODS: Participants were 179 women (white women n = 141, African American women n = 38, mean age = 27.7 years). Resting metabolic rate was measured using indirect calorimetry, body composition using dual energy x-ray absorptiometry, cardiorespiratory fitness …