Impact Of Occupational Footwear And Workload On Lower Extremity Muscular Exertion,
2018
Mississippi State University
Impact Of Occupational Footwear And Workload On Lower Extremity Muscular Exertion, Alana J. Turner, Jonathan C. Swain, Katherine L. Mcwhirter, Adam C. Knight, Daniel W. Carruth, Harish Chander
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 331-341, 2018. Footwear worn and workload performed can influence muscular exertion, which is critical in occupational environments. The purpose of the study was to assess the impact of two occupational footwear, steel-toed (SWB) and tactical (TWB) work boots, on muscular exertion when exposed to a physical workload. Eighteen healthy male participants (age: 21.27 ± 1.7 years; height: 177.67 ± 6.0 cm; mass: 87.95 ± 13.8 kg) were tested for maximal voluntary isometric contraction (MVIC) using electromyography (EMG) and pressure pain threshold (PPT) using an algometer for four lower extremity muscles prior to (pre-test) and …
Does Body Mass Index Influence The Physiological And Perceptual Demands Associated With Defensive Tactics Training In State Patrol Officers?,
2018
University of Colorado at Colorado Springs
Does Body Mass Index Influence The Physiological And Perceptual Demands Associated With Defensive Tactics Training In State Patrol Officers?, J. Jay Dawes, Charles Kornhauser, Diana Crespo, Craig L. Elder, Keston Lindsay, Ryan J. Holmes
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 319-330, 2018. The purpose of this investigation was to determine the physiological and perceptual demands associated with defensive tactics (DEFTAC) training among state patrol officers of different BMI (body mass index) categories. Twenty-four male state patrol officers (n = 24, age 36.00 + 7.86 yrs) voluntarily agreed to participate in data collection during a DEFTAC gauntlet. Anthropometric information (height (HT) 182.19 + 7.43 cm and weight (WT) 96.31 + 17.45 kg), body mass index (BMI), peak and average heart rates, duty weight, BLa, and RPE, were recorded. Officers were then divided into two-groups (Healthy …
Rate Of Performance Change In American Female Weightlifters Over Ten Years Of Competition,
2018
Oklahoma City University
Rate Of Performance Change In American Female Weightlifters Over Ten Years Of Competition, Jason Miller, Heidi Ventresca, Lindsay Bracken
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 290-307, 2018. The purpose of this study was to evaluate the rates of performance change for American female weightlifters over 10 years of competition. Athlete performance results were gathered from the United States Weightlifting open access, results archive, database. Data was delimited to athletes (N ≥ 750) that competed in Youth or Junior Nationals to ensure athletes were <21yrs old at the first recorded competition. Competition results were converted to strength to mass (SM) ratios to control for the effect of bodyweight on performance. Starting with the first competition date, the highest SM for the snatch (SNT), clean and jerk (CJ) and combined total (T), in three month segments for three years, and six month segments over 10 years, were recorded. Observed percentage change in SM and Cohen’s d effect size (ES) between each 3- and 6-month segment and the first competition (baseline), for the SNT, CJ and T, was determined. Positive change in rate of …
Sex And Age Differences In Trail Half Marathon Running,
2018
University of Nevada, Las Vegas
Sex And Age Differences In Trail Half Marathon Running, James W. Navalta, Jeffrey Montes, Elizabeth A. Tanner, Nathaniel Bodell, John C. Young
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 281-289, 2018. Female participation is growing in trail running races. The purpose was to evaluate sex and age differences in top finishers of a trail running half marathon. Velocity differences between males (M) and females (F) were determined for the top 10 finishers of the Moab Trail Half Marathon from 2012 - 2015 across age, and by finishing place. Differences between age category and between sexes were determined through ANOVA with significance accepted at P < 0.05. A significant difference for running velocity was present between sexes at each age category (20-29 yr F = 2.9±0.3, M = 3.4±0.4 m·sec-1; 30-39 yr F = 2.8±0.3, M = 3.3±0.3; 40-49 yr F = 2.7±0.3, M = 3.0±0.5; 50-59 …
Simulated Altitude Via Re-Breathing Creates Arterial Hypoxemia But Fails To Improve Elements Of Running Performance,
2018
University of Central Missouri
Simulated Altitude Via Re-Breathing Creates Arterial Hypoxemia But Fails To Improve Elements Of Running Performance, Matthew J. Garver, Cory M. Scheadler, Logan M. Smith, Sarah J. Taylor, Chase M. Harbach
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 187-197, 2018. Acclimatization to altitude has been shown to improve elements of performance. Use of simulated altitude is popular among athletes across the sports spectrum. This work was on a handheld, re-breathing device touted to enhance performance. Seven recreationally-trained athletes used the device for 18 hours over the course of the 37-day intervention trial. The elevations simulated were progressively increased from 1,524m to 6,096m. To ascertain potential efficacy, four performance trials were included (familiarization, baseline, and 2 follow-ups). Hematological (hematocrit, hemoglobin, and lactate), physiological (respiratory exchange ratio, heart rate, and oxygen consumption), and perceptual …
Effects Of Starting Stance On Base Running Sprint Speed In Softball Players,
2018
California State University, Fullerton
Effects Of Starting Stance On Base Running Sprint Speed In Softball Players, Amy Marquardt, Megan A. Wong, Casey M. Watkins, Saldiam R. Barillas, Andrew J. Galpin, Jared W. Coburn, Lee E. Brown
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 179-186, 2018. Speed is a crucial aspect in softball, and can be the difference between winning and losing. Base stealing is a method used to produce runs. There has been debate over which starting position is the most advantageous to maximize acceleration and speed to reach the next base the fastest. The purpose of this study was to examine the effect of different starting stances on acceleration and speed phases in collegiate softball players. Seventeen healthy NCAA Division I women’s softball players (age = 19.9 ± 1.3yrs, height = 167.0 ± 5.4cm, mass = …
A Cross-Training Program Does Not Alter Self-Reported Physical Activity Levels In Elementary School Children,
2018
Taylor University-Upland
A Cross-Training Program Does Not Alter Self-Reported Physical Activity Levels In Elementary School Children, Melody L. White, Matthew S. Renfrow, Richard S. Farley, Dana K. Fuller, Brandi M. Eveland-Sayers, Jennifer L. Caputo
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 308-318, 2018. The purpose of the study was to examine the effects of a school-based cross-training program on body mass index (BMI), attitudes toward physical activity (ATPA), and physical activity (PA) levels of children in the 4th and 5th grades. Children (N = 118) were divided into control (n = 60) and experimental (n = 58) groups based on class availability. While the control group continued academic classes as usual, the experimental group participated in cross-training involving resistance training (RT), calisthenics, and stretching twice a week for 10 weeks. …
An Analysis Of Collegiate Club-Sport Female Lacrosse Players: Sport-Specific Field Test Performance And The Influence Of Lacrosse Stick Carrying,
2018
California State University, Fullerton
An Analysis Of Collegiate Club-Sport Female Lacrosse Players: Sport-Specific Field Test Performance And The Influence Of Lacrosse Stick Carrying, Robert G. Lockie, Samantha A. Birmingham-Babauta, John J. Stokes, Tricia M. Liu, Fabrice G. Risso, Adrina Lazar, Dominic V. Giuliano, Ashley J. Orjalo, Matthew R. Moreno, Alyssa A. Stage, Deshaun L. Davis
International Journal of Exercise Science
International Journal of Exercise Science 11(4): 269-280, 2018. Lacrosse is a field-based, intermittent sport that requires players to use a stick with a shaft and mesh pocket to manipulate the ball. However, there has been limited analysis of the characteristics of collegiate club-sport players, and whether stick carry influences the sprinting speed of lacrosse players. As a result, this study investigated the field test characteristics of collegiate club-sport female lacrosse players, and the effects of stick carry on linear and change-of-direction speed. Nine players (seven field players, two goalkeepers) volunteered for this study and completed: vertical jump and standing broad …
Acute Specific Effects Of Caffeine-Containing Energy Drink On Different Physical Performances In Resistance-Trained Men,
2018
Londrina State University
Acute Specific Effects Of Caffeine-Containing Energy Drink On Different Physical Performances In Resistance-Trained Men, Camilla Astley, Diego Souza, Marcos Polito
International Journal of Exercise Science
International Journal of Exercise Science 11(4): 260-268, 2018. Caffeine containing energy drink (ED) is frequently used as ergogenic aid, but its effect on performance need more investigation. Thus, the aim of this study was to analyze the effects of acute ingestion of an ED on the physical performance of resistance-trained men subjected to successive tests in the same experimental protocol. Fifteen resistance-trained males (21.0 ± 0.3 yrs; 177.4 ± 1.8 cm; 79.6 ± 1.8 kg) ingested 2.5 mg caffeine per kg of body weight (619.5 ± 14.6 mL of ED) or a placebo in a double-blind randomized cross-over design. Physical …
Thirty-Year Trends Of Study Design And Statistics In Applied Sports And Exercise Biomechanics Research,
2018
Faculty of Physical Education and Sport Science, National and Kapodistrian University of Athens
Thirty-Year Trends Of Study Design And Statistics In Applied Sports And Exercise Biomechanics Research, George Vagenas, Dimitria Palaiothodorou, Duane Knudson
International Journal of Exercise Science
International Journal of Exercise Science 11(1): 239-259, 2018. This study documented the change in study design and statistics employed in applied sports and exercise biomechanics research from 1985 to 2014. The sample comprised 676 data based original research reports published in the Journal of Applied Biomechanics (JAB) from 1985 to 2014. Eight design and 10 statistical criteria were extracted from each study. Descriptive statistics were calculated and change in study criteria over time were documented. Design criteria that did not change over time, remaining at relatively low levels of rigor, were widespread (71%) use of small (2-20) sample sizes and …
Practices, Perceived Benefits, And Barriers To Strength Training Among Women Enrolled In College,
2018
University of Northern Iowa
Practices, Perceived Benefits, And Barriers To Strength Training Among Women Enrolled In College, Kimberly S. Hurley, Kaleigh J. Flippin, Lindsey C. Blom, Jocelyn E. Bolin, Donald L. Hoover, Lawrence W. Judge
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 226-238, 2018. The American College of Sports Medicine (ACSM) has recommended that resistance training be performed at least twice per week, with 8-12 repetitions of 8-10 exercises targeting all major muscle groups (1). However, Kruger, Carlson, and Kohl (18) reported that women were participating less than the U.S. population on the whole, as only 20% of women were engaging in resistance training two or more times per week. In order to better understand why only 1 in 5 women participate regularly in this form of physical activity, this study investigated current resistance training practices, …
Effects Of Single-Dose Dietary Nitrate On Oxygen Consumption During And After Maximal And Submaximal Exercise In Healthy Humans,
2018
University of Dayton
Effects Of Single-Dose Dietary Nitrate On Oxygen Consumption During And After Maximal And Submaximal Exercise In Healthy Humans, Genevieve M. Kocoloski, Anne R. Crecelius
International Journal of Exercise Science
International Journal of Exercise Science 11(3): 214-225, 2018. Dietary nitrate (NO3-) has been shown to reduce oxygen consumption (VO2) during moderate to high-intensity (e.g. time to fatigue, time trials) exercise and often in trained athletes. However, less is known regarding prolonged exercise and the potential impact of NO3- on post-exercise excess oxygen consumption (EPOC), particularly in untrained individuals, who may have different metabolic goals during exercise than trained individuals. We tested the hypothesis that acute nitrate supplementation in the form of beet root juice will significantly decrease both VO2 during maximal exercise …
Influence Of Baseline Muscle Strength And Size Measures On Training Adaptations In Resistance-Trained Men,
2018
Kennesaw State University
Influence Of Baseline Muscle Strength And Size Measures On Training Adaptations In Resistance-Trained Men, Gerald T. Mangine, Adam M. Gonzalez, Jeremy R. Townsend, Adam J. Wells, Kyle S. Beyer, Amelia A. Miramonti, Nicholas A. Ratamess, Jeffrey R. Stout, Jay R. Hoffman
International Journal of Exercise Science
International Journal of Exercise Science 11(4): 198-213, 2018. The influence of baseline strength or muscle size on adaptations to training is not well-understood. Comparisons between novice and advanced lifters, and between stronger and weaker experienced-lifters, have produced conflicting results. This study examined the effect of baseline muscle strength and size on subsequent adaptations in resistance-trained individuals following a traditional high-volume, short-rest resistance training protocol. Fourteen resistance-trained men (24.0±2.7 y; 90.1±11.7 kg; 169.9±29.0 cm) completed pre-training (PRE) ultrasound measurements of muscle cross-sectional area (CSA) in the rectus femoris (RF), vastus lateralis (VL), pectoralis major, and triceps brachii (TRI) prior to strength …
Effect Of A School-Based Physical Activity Intervention On Number And Letter Recognition In Preschoolers,
2018
University of Massachusetts Amherst
Effect Of A School-Based Physical Activity Intervention On Number And Letter Recognition In Preschoolers, Christine W. St. Laurent, Sarah Burkart, Sofiya Alhassan
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 168-178, 2018. The aims of this study were to determine if physical activity (PA) and sedentary behaviors were correlated to components of school readiness skills (i.e., symbol recognition – numbers and letters) in preschoolers and to evaluate the efficacy of a 12-week, academically connected PA intervention on letter and number recognition in preschoolers. Two preschool centers were randomized to a 12-week preschool-based PA intervention (INT) that incorporated short-bout PA lessons embedded into the Massachusetts Early Learning Standards or a health-tracking control group (CON). INT preschoolers completed two 10-minute (as part of morning circle time) …
Brief, High-Intensity Interval Exercise Improves Selective Attention In University Students,
2018
Queen's University
Brief, High-Intensity Interval Exercise Improves Selective Attention In University Students, Jeremy J. Walsh, Charlotte Dunlap, Jonathan Miranda, David B. Thorp, Derek S. Kimmerly, Michael Tschakovsky, B J. Gurd
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 152-167, 2018. This study aimed to investigate the effect of very brief, high-intensity interval exercise (HIIE) on selective attention in university students. As a follow-up, we investigated whether HIIE performed prior to a university lecture improves retention of lecture material. A single-group counterbalanced post-test only design was used for this study. 22 university students (19 females; age = 20.0 ±1.0 years) performed a HIIE and control visit on separate days. During the HIIE session, participants performed 4 separate body-weight exercises for 1 set each, consisting of eight 20 s intervals interspersed with 10 s …
Determinants Of Attendance At A Physical Activity Focused Afterschool Program In Elementary School Children,
2018
University of South Carolina, Arnold School of Public Health
Determinants Of Attendance At A Physical Activity Focused Afterschool Program In Elementary School Children, Anthony E. Crimarco, Carlene Mayfield, Nathanael G. Mitchell, Michael W. Beets, Zenong Yin, Justin B. Moore
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 137-151, 2018. Afterschool youth physical activity (PA) programs provide opportunities for increasing children’s time engaged in moderate-to-vigorous physical activity (MVPA). However, low program attendance reduces the benefits of participating in these programs. The purpose of this study was to determine if enjoyment, athletic competence and motivation for PA predict youth attendance at a free afterschool PA program from 3rd to 5th grade. Data were collected from a larger randomized community trial examining the effectiveness of an afterschool program for increasing opportunities to engage in MVPA. Data were collected twice annually (fall/spring) over 3 school …
Discrimination Against Obese Exercise Clients: An Experimental Study Of Personal Trainers,
2018
University of Northern Iowa
Discrimination Against Obese Exercise Clients: An Experimental Study Of Personal Trainers, Fabio Fontana, Jonathan Bopes, Seth Bendixen, Tyler Speed, Megan George, Mickey Mack
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 116-128, 2018. The aim of the study was to compare exercise recommendations, attitudes, and behaviors of personal trainers toward clients of different weight statuses. Fifty-two personal trainers participated in the study. The data collection was organized into two phases. In phase one, trainers read a profile and watched the video displaying an interview of either an obese or an average-weight client. Profiles and video interviews were identical except for weight status. Then, trainers provided exercise recommendations and rated their attitude toward the client. In phase two, trainers personally met an obese or an average-weight …
Are Children And Their Parents More Active When Children Engage In More Structured Activities?,
2018
McGill University
Are Children And Their Parents More Active When Children Engage In More Structured Activities?, Nathan A. Chiarlitti, Angela M. Kolen
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 106-115, 2018. Children’s participation in sport/physical activity programs (structured activity) may play a critical role in promoting (or hindering) activity in children and their parents. The purpose of this pilot study was to determine if the amount of time children spend participating in structured activity correlates with physical activity levels (moderate to vigorous physical activity (MVPA)/day and steps/day) in children and their parents. Convenience sampling was used to collect data from 14 parent-child pairs with children ranging from ages 7-10 years. Parental and children’s daily physical activity levels (MVPA/day and steps/day) were determined from …
An External Focus Of Attention Is Effective For Balance Control When Sleep-Deprived,
2018
Cincinnati Children's Hospital Medical Center
An External Focus Of Attention Is Effective For Balance Control When Sleep-Deprived, Jed A. Diekfuss, James A. Janssen, Alexis B. Slutsky, Nathaniel T. Berry, Jennifer L. Etnier, Laurie Wideman, Louisa D. Raisbeck
International Journal of Exercise Science
International Journal of Exercise Science 11(5): 84-94, 2018. The purpose of our study was to examine if the beneficial effects of an external focus are effective for balance control when sleep-deprived. Sleep-deprived participants (27 hours awake) completed three blocks of five separate 30 second trials on a dynamic balance board. All participants were given internal, external, and control instruction. For the internal focus trials, participants focused on their feet; whereas, for the external focus trials, participants focused on the balance board. Participants’ time in balance was significantly greater during the external focus compared to the internal focus and control. These …
The Effects Of Medicine Ball Training On Bat Swing Velocity In Prepubescent Softball Players,
2018
The University of Akron
The Effects Of Medicine Ball Training On Bat Swing Velocity In Prepubescent Softball Players, Mallory S. Kobak, Michael J. Rebold, Stacey L. Buser, Rachele M. Kappler, Ronald Otterstetter
International Journal of Exercise Science
International Journal of Exercise Science 11(4): 75-83, 2018. The purpose of this study was to assess the effects of an 8-week medicine ball training program on bat swing velocity in prepubescent softball players. Twenty-seven female prepubescent softball players (age = 10.2 ± 1.2) participated in this study. Participants were randomly assigned to either a medicine ball training (MB = 13) or control (CON = 14) group. Pre- and post-testing consisted of 10 dry swings using the bat that the participants would normally use during competition, which was then followed by 10 hits off of a pitching machine with …
