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International Journal of Exercise Science

Zack Papalia, Oliver Wilson, Melissa Bopp, Michele Duffey
Understanding the relationship between college students' physical activity (PA) self-monitoring and PA levels has the potential to inform initiatives to promote PA. This study's purpose was to examine the prevalence of technology-based self-monitoring among college students the potential relationship between device usage, goal setting behaviors, PA enjoyment, and PA levels. An online survey assessed students' demographics, current PA level, technology-based PA self-monitoring, and psychosocial outcomes. Independent t-tests examined differences in PA level and psychosocial outcomes by device use...
2018: International Journal of Exercise Science
Jeffrey Montes, John C Young, Richard Tandy, James W Navalta
To evaluate if the Hexoskin smart shirt (HxS) would produce valid and reliable measurements for heart rate (HR), respiratory rate (RR), minute ventilation (VE ), step count (SC), and energy expenditure (EE) when compared to a Polar T-31 heart rate monitor, an Applied Electrochemistry Moxus Metabolic System, and a manual step count. A two-day walking treadmill protocol with participants walking for 3 minutes at 3 speeds (1.5mph, 2.5mph, 3.5mph, 0% grade) was performed. Forty-nine volunteers participated the first day, forty-six on the second, thirty-one were used for reliability...
2018: International Journal of Exercise Science
Brandon M Fjerstad, Roger L Hammer, Adam M Hammer, Gavin Connolly, Karen V Lomond, Paul O'Connor
It has been shown that acute static stretching (SS) may increase flexibility, improve performance and reduce the risk of muscle strains, but may also result in decreased maximal force output. Literature review revealed little research had specifically been done on the most effective ways to stretch the hip adductor muscles. The purpose was to determine the effects that an acute bout of SS (active vs passive) has on hip adductor flexibility and maintenance of strength. Randomized cross-over study using a 3 × 2 (Condition X Time) repeated measures ANOVA statistical design...
2018: International Journal of Exercise Science
Danilo V Tolusso, Ward C Dobbs, Michael R Esco
Rating of perceived exertion (RPE) extrapolation involves mathematically extending the submaximal relationship between RPE and oxygen consumption (VO2 ) to maximal intensity. This technique allows practitioners to forego, potentially dangerous, maximal exertion testing while attaining accurate measures of maximal oxygen consumption used for exercise prescription. This method has been proven accurate in adults, but much less in known when applied to an adolescent population. The purpose of this study was to assess the accuracy of the RPE extrapolation as method for estimating VO2max in adolescents...
2018: International Journal of Exercise Science
Wei Zhu, D Eli Lankford, Joel D Reece, Daniel P Heil
This study characterized both aerobic and anaerobic energy expenditure (EE) for several Polynesian dances in a group of experienced professional Polynesian dancers. Thirteen men and 17 women were tested using indirect calorimetry to assess aerobic EE (and converted to METs), and fingertip blood lactate to estimate anaerobic EE, during both resting and dancing activities. Total EE was then computed as the sum of both aerobic and anaerobic activity energy expenditure (AEE, or EE above resting). One sample t-tests compared mean MET values for each type of dance to the 3-MET and 6-MET thresholds for moderate and vigorous physical activity (MVPA), respectively...
2018: International Journal of Exercise Science
Nicolas W Clark, Dale R Wagner, Edward M Heath
The purpose of this study was to compare power outputs of the flying start to the stationary start method on an electromagnetically-braked cycle ergometer. Twenty advanced resistance-trained men (age 24.6 ± 4.5 years; 25.4 ± 2.5 kg/m2 ) volunteered to participate in this study. A counter-balanced, repeated-measures design was utilized to randomly assign participants to either the flying start or the stationary start for their first Wingate test. Paired t tests were used to evaluate mean differences between start methods...
2018: International Journal of Exercise Science
Adam M Coughlin, Paul R Nagelkirk, Jamie A Cooper, Chad M Paton, Karen H Friderici, Byron A Wingerd, James M Pivarnik, Christopher J Womack
The purpose was to determine if the Alu-insertion (I)/deletion (D) polymorphism of the tissue plasminogen activator (tPA) gene influences the tPA response to maximal exercise. Fifty male subjects (age = 23.6 ± 4.7 yrs) completed a maximal treadmill exercise test. Blood samples were drawn before and immediately after exercise for determination of plasma tPA antigen and activity. Isolated DNA was amplified via polymerase chain reaction, electrophoresed, and visually amplified to determine tPA genotype. Subjects were classified as possessing the D allele (D) (n = 28) or being homozygous for the I allele (I) (n = 22)...
2018: International Journal of Exercise Science
Miles A Mercer, Tori M Stone, John C Young, John A Mercer
The purpose of the study was to determine if running economy was influenced by wearing maximal cushioning shoes vs. control (neutral cushioning) shoes. Participants (n=10, age=28.2±6.1yrs; mass=68.1±10.2 kg; height=170±6.1 cm) completed two experiments. Each experiment included running conditions wearing control and maximal cushioning shoes. In Experiment 1, participants ran on a treadmill at three speeds in each shoe condition (6 total conditions). The speeds were: 1) preferred speed, 2) preferred speed + 0...
2018: International Journal of Exercise Science
Collin J Popp, Michelle M Bohan Brown, William C Bridges, Elliot D Jesch
The purpose of this study was to evaluate the effectiveness of recommending a MyPlate or a Paleolithic-based diet, both with and without exercise, on aerobic fitness, strength, and anaerobic power over eight weeks. Participants (n=20) were randomized to one of four groups, (1) a MyPlate diet (MP), (2) Paleolithic-based diet (PD), (3) MyPlate and exercise (MP + Ex), and (4) Paleolithic-based diet and exercise (PD + Ex). The exercise included two days of unsupervised aerobic and resistance exercise. At baseline and final, absolute and relative peak oxygen consumption (absVO2peak and relVO2peak ), anaerobic power, and upper and lower body strength were determined...
2018: International Journal of Exercise Science
Whitley J Stone, James W Navalta, T Scott Lyons, Mark A Schafer
Since its inception, the mission of the International Journal of Exercise Science (IJES) has been to engage student researchers, to provide an outlet for peer-review and possible publication of their work, and to grant an opportunity for them to gain experience as peer-reviewers. The Editors of IJES take pride in providing these opportunities for student involvement, and we are constantly seeking new and innovative ways to enhance students' professional development. As our readership has expanded across the globe and our scope has broadened to cross many Kinesiology related disciplines, we believe it is timely to revisit the purpose of peer-review, give advice on best practices, and provide a template for reviews...
2018: International Journal of Exercise Science
Rachelle D Davies, Eric C Parent, Craig D Steinback, Michael D Kennedy
Airway hyperresponsiveness (AHR), airway inflammation, and respiratory symptoms are common in competitive swimmers, however it is unclear how volume and intensity of training exacerbate these problems. Thus, our purpose was to measure AHR, inflammation, and respiratory symptoms after low, moderate, and high training loads in swimmers. Competitive youth swimmers (n=8) completed nine weeks of training split into three blocks (Low, Moderate, and High intensity). Spirometry at rest and post-bronchial provocation [Eucapnic Voluntary Hyperpnea (EVH)] and Fractional Exhaled Nitric Oxide (FeNO) were completed at the end of each training block...
2018: International Journal of Exercise Science
Cherilyn N McLESTER, Courtenay S Hicks, Lauren Miller, John R McLESTER
The purpose of this study was to examine the differences between body composition, social physique anxiety (SPA) and appearance satisfaction among college students by sex and BMI. A secondary purpose was to assess levels of appearance satisfaction before and after body composition testing and discover any differences between perceived body fat percentage (BF%) and weight versus actual measurements. Participants included 212 college students (93 males, 119 females), 22.0 ± 2.2 years. They answered a demographic questionnaire, the Social Physique Anxiety Scale (SPAS), post-assessment questions, and underwent body composition testing via dual energy x-ray absorptiometry (DXA)...
2018: International Journal of Exercise Science
Bridgette Schneekloth, Gregory A Brown
Using a physically active video game presents an opportunity for a person to engage in exercise in the privacy of their own home, yet still receive some feedback on the quality of their exercise performance. The purpose of this project was to compare the physical activity between participating in a Zumba exercise class led by a human and using a Zumba video game. Eight women (33.0 ± 3.0 y, 34.8 ± 8.1 % body fat) who regularly participated in a Zumba exercise class were measured for heart rate, number of steps taken, and minutes of sedentary, light, moderate, and vigorous physical activity while participating in a 60-minute human led Zumba exercise class (HZ) or while playing Zumba on the Xbox Kinect video game system (VZ)...
2018: International Journal of Exercise Science
Jeremy Robinson, Adam Roberts, Shane Irving, Robin Orr
Police officers are required to carry external loads as part of their occupation. One means of preparing officers to carry loads is through physical conditioning. The aim of this study was to investigate whether strength, power or aerobic endurance had the greatest association with load carriage performance. Retrospective data from 42 male specialist tactical police officers (mean body weight = 88.8±8.25 kg) informed this study. Baseline data were provided for strength (1 Repetition Maximum [RM] bench press, deadlift, squat and pull-up), lower body power (vertical jump, 10m sprint) and aerobic ('beep' test) performance...
2018: International Journal of Exercise Science
Marina A Marmolejo, Makda Medhanie, Heather P Tarleton
Proper musculoskeletal health is dependent on the efficient inner workings of muscles, tendons, ligaments, joints, and bones. The homeless experience can be physically debilitating to these tissues and anatomical structures. This feasibility study aims to explore how to answer the overarching question: do the lived experiences of homeless young adults negatively affect their musculoskeletal health? Questionnaires were distributed to assess the demographic characteristics, physical activity, health behaviors, and sleep patterns of 40 homeless young adults and 45 university students in Los Angeles County...
2018: International Journal of Exercise Science
Nathan D Dicks, Tammy V Joe, Kyle J Hackney, Robert W Pettitt
We investigated the validity of a recently developed equation for predicting sprinting times of various tactical loads based upon the performance of a running 3-min all-out exercise test (3MT). Thirteen recreationally trained participants completed the running 3MT to determine critical velocity (CV) and finite running capacity for running velocities exceeding CV ( D '). Two subsequent counterbalanced loaded sprints of 800 and 1000 m distances with 20 and 15% of their body mass, respectively, were evaluated...
2018: International Journal of Exercise Science
Daniel Maupin, Thomas Wills, Robin Orr, Ben Schram
Elite tactical units complete a variety of demanding tasks and a high level of fitness is required by this population to perform their occupational tasks optimally. The aim of this critical review was to identify and synthesize key findings of studies that have investigated the fitness profiles of elite tactical units. Included studies were critically appraised, using the Downs and Black checklist, and a level of evidence was determined. Relevant data were extracted, tabulated, and synthesized. Fourteen studies were included for review and ranged in percentage quality scores from 46% to 66% with a mean of 57...
2018: International Journal of Exercise Science
Lauren N Shaver, Eric K O'Neal, Eric E Hall, Svetlana Nepocatych
The advantage of ingesting fluids during endurance exercise lasting < 90 min has recently been challenged, but literature confirming or disputing this case is limited, particularly for female athletes. This study examined the effects of consuming water versus mouth rinsing with water during a running time trial. Recreationally active female runners (n = 19) completed two, 15-km time trials on an outdoor course in temperate environment (~20ºC; 87% RH) separated by at least one week in a randomized cross-over study design...
2018: International Journal of Exercise Science
Katelynn Donahoe, Dany J Macdonald, Mark S Tremblay, Travis J Saunders
Although pedometers are valid tools for measuring physical activity, to date they have not been used to assess sedentary time. The primary purpose of this study was to determine if the PiezoRx pedometer is a valid and reliable measure of sedentary time compared to the hip-worn Actical accelerometer. A secondary purpose was to compare sedentary time derived via the Fitbit Flex with that of the Actical. Finally, a third purpose was to compare sedentary time derived from the above devices, with that of the ActivPAL inclinometer...
2018: International Journal of Exercise Science
Beat Knechtle, Celina Knechtle, Thomas Rosemann, Pantelis T Nikolaidis
Although there has been increased scientific interest for physiological responses to endurance running and pacing, limited information exists for adolescents participating in endurance events. We are reporting the case of an untrained 17-year-old female teenager (body mass 50.6 kg, height 167 cm and body mass index 18.1 kg/m2 ) who intended to run a marathon within 6 hours without preparation. The young woman missed her goal by just 2 km. When the average running speed per hour was analysed, there was a major effect of race hour on running speed (p = 0...
2018: International Journal of Exercise Science
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