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International Journal of Exercise Science

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https://www.readbyqxmd.com/read/28966716/understanding-why-undergraduate-students-declare-and-continue-to-study-an-exercise-science-related-major
#1
Matthew B Vaartstra, Vanessa M Kercher, Amanda Start, Amber N Brown, Mark D Peterson, Ryan McGrath
Understanding factors that contribute to a student's selection of an exercise science-related major is important to student success, higher education and industry. This study sought to 1) better understand why undergraduate students study an exercise science-related major, 2) determine whether positive influences to study an exercise science-related major differ by academic classification, and 3) identify what student's aspirations are after graduation. Department administrators from four-year colleges and universities offering an exercise science-related major in the Northwest Region of the United States (i...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966715/a-prospective-study-comparing-distance-based-vs-time-based-exercise-prescriptions-of-walking-and-running-in-previously-sedentary-overweight-adults
#2
Cody E Morris, John C Garner, Scott G Owens, Melinda W Valliant, Hunter Debusk, Mark Loftin
Prior work has reported that the declines observed in body mass index (BMI) and circumference measurements in their cross-sectional data were twice as large when calculated from distance energy expenditure estimations compared to energy expenditure estimations based on time and intensity. The primary purpose of this study was to compare walking/running for distance to walking/running for time as part of an exercise intervention. This study followed a between-subjects, repeated measures design. Fifteen overweight, but otherwise healthy participants completed the study...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966714/run-economy-on-a-normal-and-lower-body-positive-pressure-treadmill
#3
Corey Temple, Erik Lind, Deborah VAN Langen, Larissa True, Saige Hupman, James F Hokanson
Lower body positive pressure (LBPP) treadmill running is used more frequently in clinical and athletic settings. Accurate caloric expenditure is required for proper exercise prescription, especially for obese patients performing LBPP exercise. It is unclear if running on LBPP changes running economy (RE) in proportion to the changes in body weight. The purpose of the study was to measure the oxygen consumption (VO2) and running economy (RE) of treadmill running at normal body weight and on LBPP. Twenty-three active, non-obese participants (25...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966713/examining-the-impact-of-a-university-driven-exercise-programming-event-on-end-of-semester-stress-in-students
#4
Tessa L Koschel, John C Young, James W Navalta
Stress levels in university students peak during the final exam period. An inverse association exists between Physical Activity (PA) and poor mental health. UNLV has created Fitness4Finals (F4F), an event novel in its approach to academic stress reduction by incorporating both physical activity and mental relaxation. To our knowledge, a university-driven programming event aimed at reducing physiological and psychological stress among students approaching final exams had never been studied. Therefore, the aims of this research were to 1) examine the influence of F4F on physiological stress and perceived psychological stress (PPS) and 2) to examine the relationship between physiological stress and PPS...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966712/changes-in-gait-and-texting-ability-during-progressively-difficult-gait-tasks
#5
Andrew J Strubhar, Brody Rapp, Dillon Thomas
To investigate the effects of a cell phone texting task on an individual's ability to perform three ambulation-based tasks, each with different and progressively more difficult demands. 36 participants (24 male/12 female, average age 23.4) performed: a Timed Up & Go (TUG), stair ambulation (STAIR), and tandem gait (TAN). Participants completed each gait-based task under four conditions: as a practice, while holding their cellular device (baseline), while texting a message, and while reading a message. Statistically significant differences were found within the following variables: 1) mean time to complete a gait task increased through the conditions (Baseline, Texting, Reading), 2) mean number of gait deviations increased while texting during TAN condition in comparison to baseline, 3) mean characters per second became less only in the STAIR task, 4) mean number of texting errors per second increased only in the TAN task...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966711/recovery-in-level-7-10-women-s-usa-artistic-gymnastics
#6
Stephen B Buckner, Nicholas T Bacon, Phillip A Bishop
This study assessed physical performance in women's artistic gymnastics following three variable recovery periods. Participants included fifteen female gymnasts (mean age = 13.5 ± 1.1) who had competed at USA Gymnastics (USAG) levels 7 - 10 within at least one year prior to the study. Each testing session consisted of a warm-up followed by four muscular endurance tests and one explosive maximal test. Assessments included pull-ups, leg lifts, handstand push-ups, vertical jump, and push-ups. After the performance assessments, the participants completed a typical practice session...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966710/in-season-high-intensity-interval-training-improves-conditioning-in-high-school-soccer-players
#7
Neal Howard, Stasinos Stavrianeas
Soccer is characterized by high aerobic demands interspersed with frequent bursts of anaerobic activity. High-intensity interval training (HIIT) is considered a viable alternative to traditional endurance conditioning and offers the additional time-saving benefits of anaerobic training. We hypothesized that HIIT will compare favorably to traditional (aerobic-based) soccer conditioning over the course of a high school soccer season. Junior varsity soccer players were split into control (CON, n=16) and experimental (HIIT, n=16) groups for the 10-week study...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966709/pilot-study-of-endurance-runners-and-brain-responses-associated-with-delay-discounting
#8
Laura E Martin, Jason-Flor V Sisante, David R Wilson, Angela A Moody, Cary R Savage, Sandra A Billinger
High levels of endurance training have been associated with potentially negative health outcomes and addictive-like symptoms such as exercise in the presence of injury and higher levels of impulsivity. This pilot study examined the relationships among self-report measures of addictive symptoms related to exercise and behavioral and neural measures of impulsivity in endurance runners. We hypothesized endurance runners would have increased preference for immediate rewards and greater activation of cognitive control regions when making decisions involving delayed rewards...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966708/clinical-outcomes-of-different-tempos-of-music-during-exercise-in-cardiac-rehabilitation-patients
#9
Jarad S Miller, Donna J Terbizan
This study examined the effects of stimulating and sedative music on ratings of perceived exertion (RPE), heart rate (HR), blood pressure (BP), and feeling status during exercise in cardiac rehabilitation (CR) patients. Twenty-two male and female older adults age 64 ± 8.0 y currently enrolled in phase III CR completed the study. Repeated measures crossover designs guided data collection. The manipulated independent variable was music condition (sedative, stimulating, and non-music control). The dependent variables were RPE, BP, HR, and feeling status with each represented by four repeated measures ANOVAs over time via SAS 9...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966707/irisin-and-fibronectin-type-iii-domain-containing-5-responses-to-exercise-in-different-environmental-conditions
#10
Matthew P Bubak, Matthew W S Heesch, Robert J Shute, Nicholas E Dinan, Terence L Laursen, D Taylor LA Salle, Dustin R Slivka
Fibronectin type III domain-containing 5 (FNDC5) is a skeletal muscle membrane-bound precursor to the myokine irisin. Irisin is involved in stimulating adipose tissue to become more metabolically active in order to produce heat. The purpose of this study was to determine the effects of exercise in a hot (33 °C), cold (7 °C), and room temperature (RT, 20 °C) environment on the skeletal muscle gene expression of FNDC5 and the plasma concentrations of irisin. Twelve recreationally trained males completed three separate, 1 h cycling bouts at 60% of Wmax in a hot, cold, and RT environment followed by three hours of recovery at room temperature...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966706/the-effect-of-psychomotor-performance-cerebral-and-arterial-blood-saturation-between-african-american-and-caucasian-males-before-during-and-after-normobaric-hypoxic-exercise
#11
Matthew R Feeback, Yongsuk Seo, Matthew Dancy, Ellen L Glickman
To further elucidate physiological and cognitive performance differences between African-American (AA) and Caucasian individuals (CAU) before, during or after hypoxic and normoxic exercise. Twelve college aged (18-25) apparently healthy African-American (six volunteers) and Caucasian (six subjects) males took part in two trials consisting of normobaric normoxia and normobaric hypoxia (12% oxygen). Each subject cycled at 50% of their altitude adjusted VO2max (-26% of normoxia VO2max) for one hour after a two-hour baseline...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966705/blood-flow-restriction-training-implementation-into-clinical-practice
#12
EDITORIAL
William R Vanwye, Alyssa M Weatherholt, Alan E Mikesky
To improve muscular strength and hypertrophy the American College of Sports Medicine recommends moderate to high load resistance training. However, use of moderate to high loads are often not feasible in clinical populations. Therefore, the emergence of low load (LL) blood flow restriction (BFR) training as a rehabilitation tool for clinical populations is becoming popular. Although the majority of research on LL-BFR training has examined healthy populations, clinical applications are emerging. Overall, it appears BFR training is a safe and effective tool for rehabilitation...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966704/assessment-of-differences-in-the-anthropometric-physiological-and-training-characteristics-of-finishers-and-non-finishers-in-a-tropical-161-km-ultra-marathon
#13
Philip Ls Tan, Frankie Hy Tan, Andrew N Bosch
This study aimed to compare and determine the differences in the physiological, anthropometric and training characteristics of the finishers (FIN) and non-finishers (N-FIN) in a 161-km race. Two groups of runners (FIN; N=12 and N-FIN; N=14) completed a series of anthropometric and physiological measurements over two separate sessions at least three weeks prior to the race. Training sessions starting from six weeks prior to the race were recorded. Sum of 7 skinfolds, arm and calf girths, VO2max and peak treadmill speed (PTS) were taken during session 1 while the lactate threshold (LT) and running economy (RE) were assessed during session 2...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28966703/effects-of-different-number-of-sets-of-resistance-training-on-flexibility
#14
Thalita B Leite, Pablo B Costa, Richard D Leite, Jefferson S Novaes, Steven J Fleck, Roberto Simão
The aim of this study was to investigate the effects of six months of training with three different number of sets of resistance training on flexibility in young men. Forty-seven men (mean ± SD age = 24 ± 1yrs; body mass = 79.39 ± 9.12 kg; height = 174.5 ± 5.6 cm) were randomly divided into three training groups performing either one set (G1S), three sets (G3S), or five sets (G5S) of all exercises in a resistance training session or a control group (CG). All groups were assessed pre- and post-training for Sit-and-Reach test and range of motion of 10 joints using goniometry...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674606/comparison-of-ventilatory-measures-and-20-km-time-trial-performance
#15
Willard W Peveler, Brandy Shew, Samantha Johnson, Gabe Sanders, Roger Kollock
Performance threshold measures are used to predict cycling performance. Previous research has focused on long time trials (≥ 40 km) using power at ventilatory threshold and respiratory threshold to estimate time trial performance. As intensity greatly differs during shorter time trails applying findings from longer time trials may not be appropriate. The use of heart rate measures to determine 20 km time trial performance has yet to be examined. The purpose of this study was to determine the effectiveness of heart rate measures at ventilatory threshold (VE/VO2 Plotted and VT determined by software) and respiratory threshold (RER of 0...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674605/changes-in-running-economy-respiratory-exchange-ratio-and-vo2max-in-runners-following-a-10-day-altitude-training-camp
#16
Sebastian R Diebel, Ian Newhouse, David S Thompson, Vineet B K Johnson
Running economy (RE) and VO2max are important predictors of endurance performance for elite and semi-elite endurance athletes, with RE being an appropriate predictor in a homogenous running population. Altitude training has been observed to change RE (mL.kg(-1).min(-1)), and VO2max due to alterations resulting from acclimatization. This study tracked changes in RE and VO2max before and after a 10-day altitude training camp at 1828 meters. VO2max, RE expressed calorically, and respiratory exchange ratio (RER), were measured below anaerobic threshold (AT) to observe differences between pre-and post-altitude training...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674604/mood-and-performance-anxiety-in-high-school-basketball-players-a-pilot-study
#17
Steffen J Hoover, Rachel K Winner, Holly McCutchan, Christina C Beaudoin, Lawrence W Judge, Lani M Jones, Brianna Leitzelar, Donald L Hoover
Participation in competitive sport may impact psychological measures, such as mood and performance anxiety, which in turn may impact enjoyment, adherence, continued participation, and so on. This study assessed the feasibility - in terms of process, resources, management, and potential scientific value- of measuring the effect of varying competitive challenges upon the mood and performance anxiety measures of high school athletes. The participants (n=12) consisted of the boys' varsity basketball team at a high school in a rural Midwestern community...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674603/mathematical-modeling-and-expression-of-heart-rate-deflection-point-using-heart-rate-and-oxygen-consumption
#18
Kayla M Baker, David H Fukuda, David D Church, Michael B LA Monica, Kyle S Beyer, Jay R Hoffman, Jeffrey R Stout
Heart rate deflection point (HRDP) can be determined through different mathematical-modeling procedures, such as bi-segmental linear regression (2SEG) or maximal distance model (Dmax). The purpose was to compare heart rate (HR) and oxygen consumption (VO2) at HRDP when using 2SEG and Dmax, and to examine their relationships with respiratory compensation point (RCP) and running performance. Nineteen participants completed a graded exercise test (GXT), to determine HRDP and RCP, and a 5km treadmill time trial (5Ktime)...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674602/the-effects-of-work-to-rest-ratios-on-torque-electromyographic-and-mechanomyographic-responses-to-fatiguing-workbouts
#19
Ethan C Hill, Terry J Housh, Cory M Smith, Kristen C Cochrane, Nathaniel D M Jenkins, Richard J Schmidt, Glen O Johnson
The purpose of the present study was to examine the effects of 2 different work-to-rest ratios, but the same mean load, cycle time, and total duration of the exercise bout, on maximal voluntary isometric contraction torque and neuromuscular responses to fatiguing, intermittent, submaximal, isometric, forearm flexion muscle actions. Ten men performed 2 fatiguing protocols with different work-to-rest ratios (4 s contraction, 4 s rest vs. 4 s contraction, alternating 6 and 2 s rest) that consisted of 50 intermittent, submaximal (65% of maximal voluntary isometric contraction), isometric, forearm flexion muscle actions...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674601/physiological-characteristics-of-projected-starters-and-non-starters-in-the-field-positions-from-a-division-i-women-s-soccer-team
#20
Fabrice G Risso, Farzad Jalilvand, Ashley J Orjalo, Matthew R Moreno, Deshaun L Davis, Samantha A Birmingham-Babauta, John J Stokes, Alyssa A Stage, Tricia M Liu, Dominic V Giuliano, Adrina Lazar, Robert G Lockie
NCAA soccer features different substitution rules compared to FIFA-sanctioned matches, with a greater availability of players who can enter the game. This could influence the physiological characteristics of the field position starters (ST) and non-starters (NST) within a collegiate women's team, which has not been previously analyzed. Thus, 22 field players from the same Division I women's soccer squad completed: vertical and standing broad jumps; 30-meter (m) sprint (0-5, 0-10, 0-30 m intervals); pro-agility and 60-yard shuttle; and the Yo-Yo Intermittent Recovery Test Level 1...
2017: International Journal of Exercise Science
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