Exercise Science Commons^™

Neuromechanical Analysis Of Anterior Cruciate Ligament Risk Factors In Female Collegiate Soccer Athletes, Nelson Cortes

Human Movement Studies & Special Education Theses & Dissertations

The anterior cruciate ligament (ACL) acts in an essential role to prevent anterior tibial displacement when experiencing jump-landing forces that are applied to the lower extremity; more than 100,000 injuries per year in the United States in sport activities that often require landing, deceleration-acceleration, cutting and pivoting actions have been reported. The aim of this study was to examine the nature of any lower limb coupling differences between a drop-jump and a side-step cutting actions, assess kinematic and kinetic differences between three tasks, and evaluate the effects of two landing techniques in biomechanical risk factors while performing two unanticipated tasks. …

A Comparison Of Three Computer-Based Methods Used To Determine Emg Signal Amplitude, Doug Renshaw

Doug Renshaw

No abstract provided.

Fat-Free Mass And Gender Influences The Rapid-Phase Excess Postexercise Oxygen Consumption, Linda S. Lamont Ph.D.

Linda S. Lamont Ph.D.

The purpose of this study was to determine the influence of gender dimorphism and body composition on post-exercise oxygen consumption during the rapid recovery phase.

Ground Reaction Forces Generated By Twenty-Eight Common Hatha Yoga Postures, Sylvia Joan Wilcox

Theses and Dissertations

Yoga adherents claim many benefits of the practice, including promotion of bone health and prevention of osteoporosis. However, few, if any, studies have investigated whether yoga enhances bone mineral density. Furthermore, none have identified force generation in yoga. The purpose of this study is to collect ground reaction force (GRF) data on a variety of common hatha yoga postures that would be practiced in fitness centers or private studios. Twelve female and eight male volunteers performed a sequence of 28 common hatha yoga postures while ground reaction force data were collected with an AMTI strain-gauge force plate. The sequence was …

The Effect Of Family Home Evening Nutrition Lessons On Nutritional Behavior In Latter-Day Saint Families, Jacquelyn Hansen Packard

Theses and Dissertations

Latter-day Saint (LDS) families with two parents and two children between the ages of 6-16 were recruited to participate in a weekly nutrition Family Home Evening (FHE) study and randomized into either a control group or an intervention group. Each family had to complete a nutrition screener prior to and after completing 6 weekly FHE lessons in the family's home environment. Online nutritional instruction was given to the intervention group for their FHE lessons, while the control group studied typical religious topics. Data taken from the nutrition screener were collapsed into a healthy or unhealthy diet score by averaging scores …

A Comparison Of The Traditional, Swing, And Chicken Wing Arm Movements On Volleyball Blocking In Ncaa Division 1 Female Athletes, Taubi J. Neves

Theses and Dissertations

Blocking is highly correlated with team success. The identification of specific techniques that produce a more successful block would be helpful knowledge for coaches and players. This study compared the traditional, swing, and chicken wing arm swings in combination with the running step footwork pattern in order to determine which arm swing enabled athletes to perform a more effective block. The time it took the athletes to get off the ground and get their hands above (vertically) the net was calculated. The distance the hand reached over the net or hand penetration (displacement between the net and finger in the …

Human Performance Lab Newsletter, March 2010, St. Cloud State University

Human Performance Lab Newsletter

Contents of this issue include:

• Kelly's Corner by David Bacharach
• Evolution of an Ergometer by Eric Wright and Dennis Madden
• Physical Attributes of Youth in an Urban Tennis Program by Kate Kaufmann
• Stress and your Health by Ashlee Ford
• Fluid Intake and Athletic Performance by Ashley Davenport and Chad Johnson
• Improving Sudden Cardiac Arrest Survival Rate by April Kuschke

Endurance Exercise Training Effects On Body Fatness, Vo2max Hdl-C Subfractions, And Glucose Tolerance Are Influenced By A Plin Haplotype In Older Caucasians, Nathan T. Jenkins, Jennifer A. Mckenzie, Coleen M. Damcott, Sarah Witkowski, James M. Hagberg

Exercise and Sport Studies: Faculty Publications

Perilipins are lipid droplet-coating proteins that regulate intracellular lipolysis in adipocytes. A haplotype of two perilipin gene (PLIN) single nucleotide polymorphisms, 13041A>G and 14995A>>T, has been previously associated with obesity risk. Furthermore, the available data indicate that this association may be modified by sex. We hypothesized that this haplotype would associate with body fatness, aerobic fitness, and a number of cardiovascular (CV) risk factor phenotypes before and after a 6-mo endurance exercise training program in sedentary older Caucasians. The major haplotype group (13041A/14995A; n = 57) had significantly lower body mass index (BMI) and body fatness compared with …

Electromyographical Analysis Of Double Pole Ergometry: Standing Vs. Sitting, Phillip B. Watts, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

Relationship Of Ground Reaction And Knee Joint Reaction Forces In Plyometric Exercises, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

The Effects Of A Cloth Wrap In Stabilization Of The Ankle, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

Ground Reaction Forces Of Variations Of Plyometric Exercises On Hard Surfaces, Padded Surfaces And Water, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

Hamstring Muscle Activation Differences Between Genders While Performing Single Leg Landings, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

Differences In Rsi And Peak Ground Reaction Force For Drop Rebound Jumps From A Hang And Box For Female Subjects, Randall L. Jensen

Conference Papers in Published Proceedings

No abstract provided.

Different Training Volumes Yield Equivalent Increases In Bmd, R. A. Pierce, L. C. Lee, C. P. Ahles, S. M. Shdo, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The purpose of this study was to determine if an exercise threshold existed in stimulating an elevation in bone mineral density (BMD), via resistance training, during the growth period in male rats. 27 male rats were randomly divided into Control (Con, n = 9), 3 ladder climb resistance trained group (3LC, n = 9), and 6 ladder climb resistance trained group (6LC, n = 9). The 3LC and 6LC groups were conditioned to climb a vertical ladder with weights appended to their tail 3 days/wk for a total of 6 wks, but the 6LC group performed significantly more work than …

The Influence Of Elliptical Chainrings On 10 Km Cycling Time Trial Performance, Jeremiah Peiffer, Chris Abbiss

Research outputs pre 2011

The use of elliptical chainrings (also called chainwheels or sprockets) has gained considerable interest in the amateur and professional cycling community. evertheless, we are unaware of any scientific studies that have examined the performancebenefits of using elliptical chainrings during an actual performance trial. Therefore, this study examined the influence of elliptical chainring use on physiological and performance parameters during a 10 km cycling time trial. Nine male cyclistscompleted, in a counterbalanced order, three 10 km cycling time trials using either a standard chainring or an elliptical chainring at two distinct settings. An attempt was made to blind the cyclists to …

Relationship Between Circulating Progenitor Cells, Vascular Function And Oxidative Stress With Long-Term Training And Short-Term Detraining In Older Men, Sarah Witkowski, Michael M. Lockard, Nathan T. Jenkins, Thomas O. Obisesan, Espen E. Spangenburg, James M. Hagberg

Exercise and Sport Studies: Faculty Publications

Exercise may contribute to the maintenance of vascular function via enhanced liberation and action of bone-marrow-derived progenitor cells. Activity related changes in oxidative stress may also influence the number and function of these cells. In the present study, we sought to determine (i) whether adaptations in reactive hyperaemic FBF (forearm blood flow) response associated with long-term endurance exercise and short-term detraining were related to resting putative progenitor cell number and function, and (ii) whether oxidative stress affected these factors. Participants included men with a history of more than 30 years of moderate-to-high-intensity exercise (HI group) and healthy low-active age- and …

Equal Bmd After Daily Or Triweekly Exercise In Growing Rats, B. D. Kayser, J. K. Godfrey, R. M. Cunningham, R. A. Pierce, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The purpose of this study was to examine the efficacy of continuous resistance training (3 days/wk) compared to interrupted resistance training where 20-24 h separated an exercise bout (i.e. 6 days/wk) for enhancing bone mineral density (BMD) in growing male rats. The total volume of work performed per week between the two resistance training programs was equivalent by design. Young male rats were randomly divided into Control (Con, n = 9), 3 days/wk resistance trained group (RT3, n = 9), and 6 days/wk resistance trained group (RT6, n = 9). The RT3 and RT6 groups were conditioned to climb a …

Antagonist Conditioning Contractions Impair Agonist Functioning, Luke Garceau, Aaron Gray, Mckenzie Fauth, Phillip Hanson, Brittni Hsu, Tejin Yoon, Chris Szalkowski, Brittney Lutsch, William Ebben

Exercise Science Faculty Research and Publications

This study assessed the effect of antagonist conditioning contractions (ACC) on the subsequent force and electromyography of an agonist. Twelve subjects performed isokinetic elbow flexion on a dynamometer in 4 test conditions including a baseline condition without, and 1, 3 and 6 seconds after, isometric triceps extension. Average peak torque (T), peak torque/body weight (T:BW), average power (P), and rate of torque development (RTD) were assessed. Electromyographic data were obtained from elbow extensors and flexors. A repeated measures ANOVA with post hoc analysis demonstrated that T, T:BW, P, and RTD were higher in the baseline, compared to the post ACC …

The Acute Time Course Of Concurrent Activation Potentiation, Luke Garceau, Erich Petushek, Mckenzie Fauth, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the acute time course of the ergogenic effect of concurrent activation potentiation (CAP). Forty-two men and women, including CAP non-responders and responders, performed a 5 second isometric knee extension on a dynamometer with the use of remote voluntary contractions (RVC). Mean torque was assessed in seven 500 millisecond (ms) time periods. A two-way repeated measures ANOVA revealed significant main effects for time period (p ≤ 0.001), but no significant interaction between time period and CAP non-responders and responders (p > 0.05). The ergogenic effects of CAP are accrued during the first 1000ms. Concurrent activation potentiation responders produce greater …