Medicine and Health Sciences Commons^™

Responsiveness Of The Sit-To-Stand Test To Measure Lower Body Power, Jose Antonio Tan

International Journal of Exercise Science: Conference Proceedings

Muscle power declines at a faster rate and demonstrates a stronger association with physical function than strength, emphasizing the growing importance of assessing muscle power. The Sit-to-Stand (STS) test is a novel test to measure lower body power that is valid and reliable, while also being portable and affordable. However, its responsiveness to change or longitudinal validity is unknown. PURPOSE: To examine the responsiveness to change of the Sit-to-Stand test in comparison to the pneumatic leg press in measuring lower body power. METHOD: 23 community-living adults, aged 50-80, were recruited. Participants underwent a full body strength training workout twice a …

The Effects Of Liftng Belts On Power Output, Julio Aguilar, Benjamin Coldwell, Patrick Jackson, Cade Pippen, Zane Thornton

International Journal of Exercise Science: Conference Proceedings

JULIO AGUILAR, BENJAMIN COLDWELL, PATRICK JACKSON, CADE PIPPEN, ZANE THORTON.

Kinesiology & Health Science; Stephen F. Austin State University; Nacogdoches, TX

Category: Undergraduate

Advisor: Chelette, Amber, amber.chelette@sfasu.edu

Lifting belts, when lifting heavy weights, are purportedly used to support, stabilize, and attenuate the load on the spine. With the additional support, potential questions arise about whether weightlifting belts affect the power performed when squatting. This study aimed to examine the power produced during a squat with a weightlifting belt compared to a squat performed without one. Ten subjects, five male and five female, performed squats of two sets of 3 repetitions, …

The Effectiveness Of Running Power As A Metric Of Exercise Intensity During Running Interval Training, Eric A. Lambert, Dustin W. Davis, Matahn Blank, Tashari A. Carballo, Elias M. Malek, Kathryn Lei A. Lavin, Thea Sweder, Nicole Argueta, Marcus M. Lawrence, James W. Navalta, Jeffrey Cowley

International Journal of Exercise Science: Conference Proceedings

Wearable power meters are increasingly popular among runners with Coros and Stryd offering running power as a real-time, trackable of a metric. PURPOSE: This study compared running power (RP) to physiological measures, heart rate (HR) and oxygen consumption (VO₂), across high and low intensity running intervals. METHODS: Thirteen adult participants (n = 6 male; height = 174.9 ± 6.9 cm; mass = 72.5 ± 12.0 kg) were equipped with a Stryd 27 RP meter, a Polar H10 HR monitor, and a Cosmed K5 portable metabolic unit. Participants’ self-selected RP was obtained during a 10-min run on …

Impacts Of Creatine Supplementation On Running Anaerobic Sprint Performance Test (Rast) Power And Velocity In Youth Soccer Players, Nia Howard, Citlaly Jauregui, Heitor P N Amorim, Sullen B. Sant'ana, Juan Mielgo Ayuso, Dailson Paulucio, Marco Machado, Steven B. Machek

International Journal of Exercise Science: Conference Proceedings

Creatine supplementation commonly enhances short-term, high-intensity effort performance such the soccer-specific ability to perform repeated sprints. Research in this regard is both generally sparse but specifically more so in youth athletes. PURPOSE: to determine the effect of 28 days of creatine monohydrate supplementation on running anaerobic sprint performance (RAST) power and velocity in youth soccer players. METHODS: Sixteen male youth soccer players were randomized in double-blinded, parallel-group fashion to either 28 days of creatine supplementation (CRE; 15.9±0.35y) or an equivalently-dosed dextrose (PLA; 15.5±0.54y; 0.3g/kg/d loading dose for the first seven days, followed by 0.03g/kg/d for the remaining period), whereby they …

Peak Power Changes During A Countermovement Jump Following Treadmill And Cycling High-Intensity Interval Training, Michael G. Maregne, Juliet Moore, E Todd Schroeder

International Journal of Exercise Science: Conference Proceedings

Within activities involving jumping, peak power can be a significant factor to consider when assessing an athlete’s overall physical performance. By investigating different modalities of exercise, it is possible to discover potential benefits or flaws in certain workout regimens that may influence jump performance. In turn, this could influence how physical trainers, athletes, and recreationally active people approach their exercise routine to maximize performance. PURPOSE: The purpose of this study was to investigate the changes in peak jump power during a countermovement jump (CMJ) immediately following and 1-hour post high-intensity interval training (HIIT) using high-impact (running) and low-impact (cycling) …

The Performance Profile Of A Division I Football Team, Seth B. Long, Tyler Shumate, Dierdra K. Bycura, Scott N. Drum

International Journal of Exercise Science: Conference Proceedings

Reporting athletic performance characteristics of a Division I collegiate football team may serve to inform coaching personnel and sports performance staff about the most versatile players to utilize for various competitions. Performance data may also help guide developing athletes about benchmarks to achieve for optimal competitiveness. PURPOSE: Our aim was to observe athletic performance characteristics of and differences between designated starters (ST) vs non-starters (NST). METHODS: 44 athletes – ST (n=22) vs NST (n=22) – were selected using a convenience sample and equally distributed between offense and defense positions. Preseason performance data were analyzed related to select power, including …

Firefighter Trainee Fitness, Reasons For Academy Release, And Predictive Capabilities Of Fitness Tests, Robert G. Lockie, Fernando Montes, Robin (Rob) Marc Orr, J. Jay Dawes

International Journal of Exercise Science: Conference Proceedings

Firefighter trainees need a level of fitness to be admitted to and complete a training academy. Fitness could indicate a trainee’s likelihood of graduation. PURPOSE: Determine fitness differences between trainees who graduated (GRAD) or were released due to a) injury (RELI), b) skills test performance failures (RELP), or c) resignation (RELR); and whether fitness predicted graduation or academy release. METHODS: Data from an occupational physical ability test (OPAT) for 686 trainees were analyzed, including: Illinois agility test; push-ups; pull-ups; leg tucks; estimated maximal aerobic capacity (V̇O_2max) from the multistage fitness test; backwards overhead 4.54-kg medicine ball …

The Effects Of Acute Beetroot Juice Ingestion On Exercise And Cognitive Performance In Female Athletes, Isabella G. Lincoln, Courtney Merrill, Katherine M. Price, Sean T. Karl, Ryan T. Kenney, Alyssa A. Riley, Chandler F. Riley, Maya A. Hammer, Adam Pennell, Rachel Tan

International Journal of Exercise Science: Conference Proceedings

Nitrate-rich beetroot juice can enhance intense exercise performance which is attributed to enhanced skeletal muscle contractility. However, limited data exist in females and it is unknown whether dietary nitrate has an ergogenic effect in this population. PURPOSE: To investigate the potential effects of acute nitrate ingestion on a battery of exercise performance and cognitive tests before and after fatiguing intermittent running exercise. METHODS: Fifteen female team-sport athletes were assigned in a randomized, double-blind, crossover design to consume nitrate-rich beetroot juice (BR; 12 mmol of nitrate) and nitrate-depleted beetroot juice (PL; 0.10 mmol of nitrate) 2.5 h prior to …

The Impact Of Squat Velocity On Force, Power, And Muscle Activity, Kyle D. Puccini, James Baldonado, Bonnie Yee, Christie R. O'Hara

International Journal of Exercise Science: Conference Proceedings

The squat is a thoroughly examined movement pattern and commonly used in sport performance training protocols, rehabilitation programs, and recreational exercise. Previous research measuring absolute strength has shown hamstring muscle activity in a six-repetition max barbell back squats. PURPOSE: The purpose of this study is to examine the effects of varying squat velocities (25, 50, 75 deg/s) on force, power, and the activation of the quadricep and hamstring muscles. Using a single-blind randomized research design, we hypothesized that hamstring muscle activity will increase at faster squat velocities. Our secondary hypothesis is that peak power will occur at 50 deg/s and …