Physiology Commons^™

The Effects Of Eccentric, Velocity-Based Training On Strength And Power In Collegiate Athletes, Samantha M. Dolezal, Tamra L. Llewellyn, Derek L. Frese

International Journal of Exercise Science

International Journal of Exercise Science 9(5): 657-666, 2016. The purpose of this study was to determine if combining velocity-based training with eccentric focus (VEB) and velocity-based training (VBT) results in power and strength gains. Nineteen men and women collegiate track and field athletes participated in this study. The subjects completed a 12-week intervention with either a VEB program or a VBT program. To determine the effectiveness of each program, the subjects completed four exercise tests before and after the training period: vertical jump, medicine ball put test, 1RM projected bench press and 1RM projected squat. There were no significant differences …

Effects Of Static Stretching On Squat Performance In Division I Female Athletes, Clare F. Heisey, J. Derek Kingsley

International Journal of Exercise Science

International Journal of Exercise Science 9(3): 359-367, 2016. Static stretching was once recognized as a method of preparation for physical activity that would inhibit performance and increase risk of injury. However, a growing body of research suggests that static stretching may not have an inhibitory effect. Regardless, the data have not examined gender differences or the fatigue index (FI) and flexibility effects of static stretching on the back squat over multiple sets. Therefore, the purpose of this study was to examine the relationship between a static-stretch condition (SC) and control condition (CC) on flexibility and the FI of Division I …

The Effects Of Two Different Resistance Training Protocols With Similar Volume On Muscular Strength, Muscle Thickness, And Fat-Free Mass, Cory Worthey

Theses and Dissertations

The manipulation of exercise volume, intensity, and order is associated with producing different musculoskeletal changes. These resistance training program variables affect mechanical tension and metabolic stress associated with resistance training, therefore affecting strength and hypertrophic outcomes. PURPOSE: The purpose of this study was to examine the effects of two different volume-equated total body exercise protocols over 9 weeks using compound exercises on muscular strength, muscle thickness, and fat-free mass. METHODS: Eight well-trained men were randomly assigned to a hypertrophy-style protocol (HG) performing 3 sets of 10 repetitions with 90 seconds rest between sets (n = 4) or a strength-style protocol …

Does Blood Flow Restriction Applied Post High-Load Exercise Augment Skeletal Muscle Growth Following Eight Weeks Of Training?, Scott Justin Dankel

Electronic Theses and Dissertations

The application of blood flow restriction during low load exercise has consistently been shown to augment muscle hypertrophy which has been attributed to metabolic accumulation. It remains unknown, however, whether metabolites can augment muscle growth independent of further mechanical tension, specifically when maintained post high-load training. Thirteen untrained individuals performed 24 training sessions. The control arm performed one set of elbow flexion (70% 1RM) exercise to volitional fatigue, while the experimental arm performed the same protocol immediately folloby 3 min of blood flow restriction (70% arterial occlusion). Both conditions completed the same volume (3687 vs. 3638 kg) of exercise. There …

Lifestyle Contributors To Cardiovascular Disease Risk, Adam J. Berrones

Theses and Dissertations--Kinesiology and Health Promotion

Aortic stiffness is an independent risk factor that has prognostic value regarding future cardiovascular disease (CVD) events such as myocardial infarction, strokes, and heart failure. Although death rates due to coronary heart disease have declined in recent years, the leading global killer remains CVD and prevalence is still high. Understanding lifestyle contributors associated with aortic stiffness would provide the public with insight into targeting key health-related behaviors.

The purpose of this observational study was to examine the association of physical activity, physical function, and dietary quality as independent factors contributing to aortic stiffness in apparently healthy middle aged men. Fifty-two …

Analysis Of Changes In Strength, Explosiveness, And Agility Performance Over An Ncaa Division I Tennis Career: A Case Study, Caleb D. Bazyler, Jacob R. Goodin, George Beckham, H. Santana, M. Swartz, Ashley A. Kavanaugh

ETSU Faculty Works

Abstract available in the 9th Annual Coaches and Sport Science College .

An Acute Bout Of Self-Myofascial Release In The Form Of Foam Rolling Improves Performance Testing, Corey A. Peacock, Darren D. Krein, Tobin A. Silver, Gabriel J. Sanders, Kyle-Patrick A. Von Carlowitz

International Journal of Exercise Science

International Journal of Exercise Science 7(3) : 202-211, 2014. Recent developments in the strength and conditioning field have shown the incorporation of foam rolling self-myofascial release in adjunct with a dynamic warm-up. This is thought to improve overall training performance; however, minimal research exists supporting this theory. Therefore, determining if an acute bout of foam rolling self-myofascial release in addition to a dynamic warm-up could influence performance is of importance. In order to do so, eleven athletically trained male subjects participated in a two condition, counterbalanced, crossover within-subjects study comparing two particular warm-up routines. The two warm-up routines compared were …

Relationships Between Anthropometric And Performance Variables In Youth: Predictors Of Lower-Body Vertical Jump Peak Power, Alexander S. Drusch, Elias M. Carrillo, Jacob Adam Mota, Kendra D. Olinghouse, Matt S. Stock, Marc Lochbaum, Brennan J. Thompson

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Anthropometric and physical performance measurements are commonly used for identifying specific physical traits in youth. Laboratory-based tests (e.g., linear velocity transducers), while accurate, provide practical limitations due to high costs and technical necessities. Thus, commonly used field tests may be useful alternatives for assessing fitness/performance characteristics of youth. The purpose of this study was to examine the relationships between anthropometric measures and lower-and upper-body power and strength measures; and to assess the predictive ability of these measures for lower-body vertical jump peak power (PP) output in youth. Thirty-nine pre-adolescent (mean±SD, range: age=7.8±1.7, 5-12 years) children volunteered to participate in …

The Efficacy Of Partial Squats On Measures Of Strength And Explosiveness: An Exploratory Study, Caleb D. Bazyler, Kimitake Sato, Craig A. Wassinger, Hugh S. Lamont, Michael H. Stone

ETSU Faculty Works

Abstract available in the 8th Annual Coaches and Sport Science College.

Attitudes Toward And Preferences For Male And Female Personal Trainers, James P. Fisher, Catherine Platts, Marie Stopforth

International Journal of Exercise Science

International Journal of Exercise Science 6(4) : 256-268, 2013. Previous research has considered the perceptions of athletes towards gender of coach and strength and conditioning coach. However, to date there appears little research considering the perceptions of clients towards gender of personal trainer. The purpose of this study was to investigate male and females perceptions of same- or opposite-gender personal trainers. Four hundred and two (male = 201, female = 201) undergraduate University student participants completed an adapted version of the Attitudes of Athletes toward Male versus Female Coaches Questionnaire (AAMFC-Q; 23). A 2 x 2 multivariate analysis of variance …

Prediction Of Total Body And Regional Strength Using Dexa Body Composition Measurements, Alex T. Carradine, Brad S. Lambert, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

ABSTRACT Resistance training is a valuable exercise modality but few tools exist to aid practitioners in refining resistance exercise prescriptions. PURPOSE: To determine if a relationship exists between strength and selected body composition variables measured by DEXA; and if so, develop equations which predict total body and regional strength. METHODS: Sixty-eight subjects (Male n = 34, Age = 35±11.96yrs, Height = 181.54±6.76cm, Weight = 97.82±16.68kg, Body Fat = 31.24±8.12% | Female n = 34, Age = 37±12.6yrs, Height = 165.41±5.64cm, Weight = 80.55±18.48kg, Body Fat = 43.00±10.16%) underwent DEXA body composition testing and maximal strength testing utilizing Keiser® pneumatic resistance …

Ground Reaction Forces Generated By Twenty-Eight Hatha Yoga Postures, Sylvia J. Wilcox, Ron Hager, Barbara Lockhart, Matthew K. Seeley

International Journal of Exercise Science

Int J Exerc Sci 5(2) : 114-126, 2012. Adherents claim many benefits from the practice of yoga, including promotion of bone health and prevention of osteoporosis. However, no known studies have investigated whether yoga enhances bone mineral density. Furthermore, none have estimated reaction forces applied by yoga practitioners. The purpose of this study was to collect ground reaction force (GRF) data on a variety of hatha yoga postures that would commonly be practiced in fitness centers or private studios. Twelve female and eight male volunteers performed a sequence of 28 hatha yoga postures while GRF data were collected with an …

Phosphatidic Acid Increases Lean Body Tissue And Strength In Resistance Trained Men, David Williams

Electronic Theses and Dissertations

Phosphatidic Acid (PA) is a natural phospholipid compound derived from lecithin which is commonly found in egg yolk, grains, fish, soybeans, peanuts and yeast. It has been suggested that PA is involved in several intracellular processes associated with muscle hypertrophy. Specifically, PA has been reported to activate protein synthesis through the mammalian target of rapamycin (mTOR) signaling pathway and thereby may enhance the anabolic effects of resistance training. To our knowledge, no one has examined the effect of PA supplementation in humans while undergoing a progressive resistance training program. To examine the effect of PA supplementation on lean soft tissue …

Harvest Of The Ipsilateral Hamstrings Does Not Result In Tibial Internal Rotation Strength And Endurance Insufficiencies For Patients 12 To 36 Months Post-Anterior Cruciate Ligament Reconstruction, Giampietro L. Vairo

International Journal of Exercise Science: Conference Proceedings

Ipsilateral hamstrings tendons harvest as a primary autograft for anterior cruciate ligament (ACL) reconstruction has become increasingly prevalent among orthopaedic surgeons. Though, limited evidence exists detailing ensuing knee joint performance capacity. Previous authors have reported that ipsilateral semitendinosus and gracilis (STG) harvest results in significant tibial internal rotation strength deficiencies for related patients (1,2). However, prior data in regards to this measure have been reported as absolute as opposed to relative indices of strength and have not produced endurance results. Therefore, our objective was to profile relative tibial internal rotation strength and endurance responses to STG harvest in ACL reconstructed …

The Female Athlete, Dilip R. Patel, Donald E. Greydanus, Hatim A. Omar

Pediatrics Faculty Publications

The female athlete has today became an accepted part of sports in elementary school, junior high, senior high, and college. This chapter covers various aspects of the prepubertal and pubertal female athlete. An historical perspective will be presented and selected comments provided on psychological and physiologic aspects of the female athlete. Concepts of adolescent gynecology are reviewed, including breast concerns and menstrual dilemmas in relation to sports activity. Exercise during pregnancy is also considered. Iron deficiency anemia and stress urinary incontinence

The Effects Of A Proprietary Fenugreek Extract On Strength & Body Composition, Eric J. Constancio, Colin Wilborn, Lem Taylor, Cliffa Foster, Brandon Bushey, Chris Poole, Earnest Pena, Tyler Jones, Richard Kreider

International Journal of Exercise Science: Conference Proceedings

Fenugreek extract has been marketed in dozens of dietary products as having performance enhancing potential for resistance trained athletes. PURPOSE: The purpose of this study was to investigate the potential performance enhancing effects of a proprietary fenugreek extract in conjunction with a controlled resistance training program. METHODS: Thirty resistance trained male subjects were matched according to fat free mass and randomly assigned to ingest in a double-blind manner capsules containing 500mg of a placebo or fenugreek (Trigonella Foenun greacum) once per day for 8-weeks (Active: N = 17, 21 ± 2.8 yrs, 178 ± 5.8 cm, 85 ± 9.6 kg, …

Forearm Emg During Rock Climbing Differs From Emg During Handgrip Dynamometry, Phillip B. Watts, Randall L. Jensen, Edward Gannon, Randy Kobeinia, Jeremy Maynard, Jennifer Sansom

International Journal of Exercise Science

Grip force, as measured via handgrip dynamometry, is often given importance in the study of rock climbing performance. Whether handgrip dynamometry produces a degree of muscle activation comparable to actual climbing has not been reported. Furthermore, the degree and variability of muscle activation for various configurations during climbing are unknown. The purpose of this study was to record forearm EMG responses for six hand configurations during climbing and to compare these responses to a maximum handgrip test. Five experienced climbers signed informed consent to participate in the study. Subjects performed four moves up (UP) and down (DN) on an overhanging …