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Full-Text Articles in Exercise Physiology
Effect Of An 8-Week Eccentric Training Program On Strength And Balance In Older Adults, Samantha Johnson
Effect Of An 8-Week Eccentric Training Program On Strength And Balance In Older Adults, Samantha Johnson
International Journal of Exercise Science
International Journal of Exercise Science 11(3): 468-478, 2018. The purpose of the current study was to determine changes in balance and strength following an eccentric resistance training program in community-dwelling older adults who reported no history of falling. Participants (N = 14, 8 female, 6 male; age = 63.5 ± 2.0 years) completed an 8-week eccentric exercise training intervention on a commercially available eccentric step machine. Training included 2 training sessions per week, with a duration of 5 to 10 minutes and an intensity of 30 to 50% maximal eccentric strength. Single leg stance, 30-second repeated chair stand, timed …
Effect Of Magnesium Carbonate Use On Repeated Open-Handed And Pinch Grip Weight-Assisted Pull-Ups, Nicholas T. Bacon, Greg A. Ryan, Jonathan E. Wingo, Mark T. Richardson, Tracey Pangallo, Phillip A. Bishop
Effect Of Magnesium Carbonate Use On Repeated Open-Handed And Pinch Grip Weight-Assisted Pull-Ups, Nicholas T. Bacon, Greg A. Ryan, Jonathan E. Wingo, Mark T. Richardson, Tracey Pangallo, Phillip A. Bishop
International Journal of Exercise Science
International Journal of Exercise Science 11(4): 479-492, 2018. The purpose was to determine if pull-up performance was affected by the use of chalk (100% magnesium carbonate) during open-handed and pinch grip weight-assisted pull-ups (WAPU) in recreationally-trained rock climbers. Furthermore, the reliability of open-handed and pinch grip WAPU was also investigated. Recreationally-active volunteers (n = 9) completed six counterbalanced trials. Participants used chalk during four trials to determine the reliability (test-retest) of the open-handed and pinch grips. While two of the six trials were used to determine if open-handed and pinch grip WAPU performance was affected without using chalk. Three of …
An Evaluation Of Select Physical Activity Exercise Classes On Bone Metabolism, Tori M. Stone, Jonathan E. Wingo, John C. Young, James W. Navalta
An Evaluation Of Select Physical Activity Exercise Classes On Bone Metabolism, Tori M. Stone, Jonathan E. Wingo, John C. Young, James W. Navalta
International Journal of Exercise Science
International Journal of Exercise Science 11(2): 452-461, 2018. Weight-bearing physical activity can optimize bone mass early in life and prevent the development of osteoporosis. However, less is known about the potential benefits of non-weight-bearing activities. The purpose of this study was to assess the efficacy of structured physical activity classes on bone metabolism. Twenty-eight premenopausal women, aged 18–35 years who were either enrolled in a yoga class (n=14) or cardio-kickboxing class (n=14) voluntarily consented to participate. Both classes were introductory classes meeting twice per week for 50 min per session for 12 weeks. Anteroposterior spine (L1-L4), hip (dual femur), and …
Weekly Salivary Biomarkers Across A Season For Elite Men Collegiate Basketball Players, Matthew J. Andre, Andrew C. Fry, Paul E. Luebbers, Andrea Hudy, Patricia R. Dietz, Glenn J. Cain
Weekly Salivary Biomarkers Across A Season For Elite Men Collegiate Basketball Players, Matthew J. Andre, Andrew C. Fry, Paul E. Luebbers, Andrea Hudy, Patricia R. Dietz, Glenn J. Cain
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 439-451, 2018. The purpose of this study was to monitor weekly the salivary free testosterone (FT), cortisol (C), and the FT/C ratio in elite men NCAA Division I basketball athletes across an entire season. Twelve athletes gave salivary samples for 30 consecutive weeks, beginning in the pre-season and ending one week after the end of post-season competition. Samples were assayed for FT and C. Additionally, a composite value (CBD) composed of Z-scores for weekly practice minutes, game minutes, resistance training repetitions, academic demands, and travel schedules was determined. One-way RM ANOVAs were used to …
Comparison Of A Pneumatic Compression Device To A Compression Garment During Recovery From Doms, Molly Winke, Shelby Williamson
Comparison Of A Pneumatic Compression Device To A Compression Garment During Recovery From Doms, Molly Winke, Shelby Williamson
International Journal of Exercise Science
International Journal of Exercise Science 11(3): 375-383, 2018. The purpose of this study was to determine the effects of a pneumatic compression device (PCD) compared to a continuously-worn compression sleeve (CS) during a five-day recovery period from delayed-onset muscle soreness (DOMS) of the elbow flexors. Eight college-aged students participated in this crossover design study. The muscle-damage protocol consisted of four sets of 25 repetitions of isokinetic concentric elbow flexion followed by eccentric elbow extension at 60 o/second. Immediately following the muscle-damage protocol, subjects either wore a CS continually for five days or completed daily, 20-minute PCD treatments for five …
No Observable Relative Age Effects In Professional Surfers: A Constraints-Based Evaluation, Michael Redd, David Fukuda, Kyle Beyer, Leonardo Oliveira
No Observable Relative Age Effects In Professional Surfers: A Constraints-Based Evaluation, Michael Redd, David Fukuda, Kyle Beyer, Leonardo Oliveira
International Journal of Exercise Science
International Journal of Exercise Science 11(6): 355-363, 2018. With the recent inclusion of surfing in the 2020 Olympic Games in Japan, there will be a number of surfing athletes vying for one of the twenty total available spots for their respective gender. The purpose was to evaluate relative age effects (RAEs) in surfing with consideration for specific developmental constraints. Elite competitive male surfers (n = 1590) were examined by birth month and subcategorized by competitive level, age groups, and geographical regions. The observed quarterly distribution was not significantly different (using c2; p>0.05) from expected for the overall …
Central Hemodynamics Measured During 5 Repetition Maximum Free Weight Resistance Exercise, Jonathan S. Howard, Cherilyn N. Mclester, Thomas W. Evans, John R. Mclester, Jimmy P. Calloway
Central Hemodynamics Measured During 5 Repetition Maximum Free Weight Resistance Exercise, Jonathan S. Howard, Cherilyn N. Mclester, Thomas W. Evans, John R. Mclester, Jimmy P. Calloway
International Journal of Exercise Science
International Journal of Exercise Science 11(2): 342-354, 2018. The PhysioFlow™ is a piece of equipment that uses bioimpedance cardiography to measure central hemodynamics. The purpose of this research was to explore the novel approach of monitoring central hemodynamics during free weight resistance exercise using bioimpedance cardiography throughout a 5 repetition maximum (5RM). Thirty participants ranging from beginner to advanced lifters (16 males and 14 females) completed a 5RM for back squat, seated push press, and bicep curl while connected to the PhysioFlow™ to assess the response of heart rate (HR), stroke volume (SV), cardiac output (Q), and ejection fraction (EF). …
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
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, Jason Miller, Heidi Ventresca, Lindsay Bracken
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, James W. Navalta, Jeffrey Montes, Elizabeth A. Tanner, Nathaniel Bodell, John C. Young
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 …
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
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. …
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
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 …
Are Children And Their Parents More Active When Children Engage In More Structured Activities?, Nathan A. Chiarlitti, Angela M. Kolen
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, Jed A. Diekfuss, James A. Janssen, Alexis B. Slutsky, Nathaniel T. Berry, Jennifer L. Etnier, Laurie Wideman, Louisa D. Raisbeck
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 …
Comparison Of Isokinetic Knee Flexion And Extension Strength Between Trained Dancers And Traditional Sport Female Collegiate Athletes, Rachele E. Vogelpohl, Lynn Wolz, Tyler Neltner, Zachariah Burkhardt, Tracey L. Bonner, Hayley M. Ericksen
Comparison Of Isokinetic Knee Flexion And Extension Strength Between Trained Dancers And Traditional Sport Female Collegiate Athletes, Rachele E. Vogelpohl, Lynn Wolz, Tyler Neltner, Zachariah Burkhardt, Tracey L. Bonner, Hayley M. Ericksen
International Journal of Exercise Science
International Journal of Exercise Science 10(8): 1196-1207, 2017. Traditional sport athletes and dancers experience various injuries while participating in their respective sport. Injury rates, especially to the anterior cruciate ligament (ACL), differ between these populations. Isometric and isokinetic strength and hamstring:quadriceps (H:Q) ratios may help to explain the difference in ACL injury rates between these populations. The purpose of this investigation was to determine the difference in isometric and concentric knee flexion and extension peak torque, and H:Q strength ratios between female dancers and division I collegiate soccer and track and field athletes. Seventeen dancers (20.53±1.51yrs, 65.60±2.06in, 62.29±8.63kg) and 24 …
The Relative Age Effect In Soccer: An Analysis Of The U20 Libertadores Cup, Fabio A D Campos, Leandra C B Campos, Idico L. Pellegrinotti, Miguel A. Gómez
The Relative Age Effect In Soccer: An Analysis Of The U20 Libertadores Cup, Fabio A D Campos, Leandra C B Campos, Idico L. Pellegrinotti, Miguel A. Gómez
International Journal of Exercise Science
International Journal of Exercise Science 10(8): 1157-1164, 2017. The year of birth is used as a criterion for grouping the competitive categories in various sports. Young players that were born in the early months of the calendar can have a benefit during their formative process, since they have higher chronological age and, consequently, are more likely to be in more advanced stages of biological maturation. The aim of this study was to evaluate the Relative Age Effect (RAE) in the U-20 Libertadores Cup. The sample consisted of 228 young players belonging to 12 clubs (ten different countries) who vied for …
An Assessment Of Sedentary Time Among Undergraduate Students At A Canadian University, Marc S. Moulin, Jennifer D. Irwin
An Assessment Of Sedentary Time Among Undergraduate Students At A Canadian University, Marc S. Moulin, Jennifer D. Irwin
International Journal of Exercise Science
International Journal of Exercise Science 10(8): 1116-1129, 2017. The purpose of this study was to calculate a total daily sedentary time for the undergraduate population at a large urban Canadian University and investigate student perceptions of the facilitators and barriers to engaging in a less sedentary lifestyle. A sample of 335 participants responded to an online questionnaire that included the SIT-Q and open-ended questions, with 102 providing sufficient data to be included in the quantitative analysis and 145 in the qualitative analysis. Students spent an average of 11.88 ± 3.46 hrs/day engaged in sedentary behaviors. Three themes were identified as …
Effects Of Heat Exposure On Body Water Assessed Using Single-Frequency Bioelectrical Impedance Analysis And Bioimpedance Spectroscopy, Brett S. Nickerson, Michael R. Esco, Phillip A. Bishop, Brian M. Kliszczewicz, Henry N. Williford, Kyung-Shin Park, Bailey A. Welborn, Ronald L. Snarr, Danilo V. Tolusso
Effects Of Heat Exposure On Body Water Assessed Using Single-Frequency Bioelectrical Impedance Analysis And Bioimpedance Spectroscopy, Brett S. Nickerson, Michael R. Esco, Phillip A. Bishop, Brian M. Kliszczewicz, Henry N. Williford, Kyung-Shin Park, Bailey A. Welborn, Ronald L. Snarr, Danilo V. Tolusso
International Journal of Exercise Science
International Journal of Exercise Science 10(7): 1085-1093, 2017. The purpose of this study was to determine if heat exposure alters the measures of total body water (TBW), extracellular water (ECW), and intracellular water (ICW) in both single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS). Additionally, we sought to determine if any differences exist between the BIA and BIS techniques before and after brief exposure to heat. Body water was evaluated for twenty men (age=24±4 years) in a thermoneutral environment (22°C) before (PRE) and immediately after (POST) 15 min of passive heating (35°C) in an environmental chamber. The mean difference …
The Effects Of Resistance Training Volume On Skeletal Muscle Proteome, Ramires A. Tibana, Octávio L. Franco, Gabriel V. Cunha, Nuno M. F Sousa, Ivo V. Sousa Neto, Márcia M. Carvalho, Jeeser Alves De Almeida, James W. Navalta, Mariana O. Lobo, Fabricio A. Voltarelli, Rita C. Marqueti, João L.Q Durigan, Jonato Prestes
The Effects Of Resistance Training Volume On Skeletal Muscle Proteome, Ramires A. Tibana, Octávio L. Franco, Gabriel V. Cunha, Nuno M. F Sousa, Ivo V. Sousa Neto, Márcia M. Carvalho, Jeeser Alves De Almeida, James W. Navalta, Mariana O. Lobo, Fabricio A. Voltarelli, Rita C. Marqueti, João L.Q Durigan, Jonato Prestes
International Journal of Exercise Science
International Journal of Exercise Science 10(7): 1051-1066, 2017. Studies are conflicting to whether low volume resistance training (RT) is as effective as high-volume RT protocols with respect to promoting morphological and molecular adaptations. Thus, the aim of the present study was to compare, using a climbing a vertical ladder, the effects of 8 weeks, 3 times per week, resistance training with 4 sets (RT4), resistance training with 8 sets (RT8) and without resistance training control (CON) on gastrocnemius muscle proteome using liquid chromatography mass spectrometry (LC-MS/MS) and cross sectional area (CSA) of rats. Fifty-two proteins were identified by LC-MS/MS, …
A Pre-Exercise Dose Of Muscle Sentry® Has No Effect On Performing Repeated Leg Press Sets To Failure, Trezlyn M. Bartschi, David C. Sanders, Tyler M. Farney, Joke Kokkonen, Arnold G. Nelson
A Pre-Exercise Dose Of Muscle Sentry® Has No Effect On Performing Repeated Leg Press Sets To Failure, Trezlyn M. Bartschi, David C. Sanders, Tyler M. Farney, Joke Kokkonen, Arnold G. Nelson
International Journal of Exercise Science
International Journal of Exercise Science 10(7): 1000-1008, 2017. This study compared the number of bilateral leg presses done at 150% of body mass while on either Muscle Sentry® (MS) or placebo (PL). Participants (16 women, 14 men, college students 19-26 years) performed 2 sets of leg press to failure using 150% of their body mass with 5 min rest separating the 2 sets. Each exercise was performed twice (1x MS, 1x PL) at the same time of day with 48 h separating each exercise. Both MS and PL were ingested 30 min prior to performing the exercise. Just prior …
Speed- And Circuit-Based High-Intensity Interval Training On Recovery Oxygen Consumption, Lindsay N. Schleppenbach, Andreas B. Ezer, Sarah A. Gronemus, Katelyn R. Widenski, Saori Braun, Jeffery Janot
Speed- And Circuit-Based High-Intensity Interval Training On Recovery Oxygen Consumption, Lindsay N. Schleppenbach, Andreas B. Ezer, Sarah A. Gronemus, Katelyn R. Widenski, Saori Braun, Jeffery Janot
International Journal of Exercise Science
International Journal of Exercise Science 10(7): 942-953, 2017. Due to the current obesity epidemic in the United States, there is growing interest in efficient, effective ways to increase energy expenditure and weight loss. Research has shown that high-intensity exercise elicits a higher Excess Post-Exercise Oxygen Consumption (EPOC) throughout the day compared to steady-state exercise. Currently, there is no single research study that examines the differences in Recovery Oxygen Consumption (ROC) resulting from high-intensity interval training (HIIT) modalities. The purpose of this study is to review the impact of circuit training (CT) and speed interval training (SIT), on ROC in both …
Students’ Perceptions Of An Applied Research Experience In An Undergraduate Exercise Science Course, Regis C. Pearson, K. Jason Crandall, Kathryn Dispennette, Jill M. Maples
Students’ Perceptions Of An Applied Research Experience In An Undergraduate Exercise Science Course, Regis C. Pearson, K. Jason Crandall, Kathryn Dispennette, Jill M. Maples
International Journal of Exercise Science
International Journal of Exercise Science 10(7): 926-941, 2017. Applied research experiences can provide numerous benefits to undergraduate students, however few studies have assessed the perceptions of Exercise Science (EXS) students to an applied research experience. The purpose of this study was two-fold: 1) to describe the rationale and implementation of an applied research experience into an EXS curriculum and 2) to evaluate EXS undergraduate students’ perceptions of an applied research experience. An EXS measurement course was chosen for implementation of an applied research experience. The applied research experience required groups of students to design, implement, and evaluate a student-led research …
Are You Welcomed? A Racial And Ethnic Comparison Of Perceived Welcomeness In Sport Participation, Trevor Bopp, Robert Turick, Joshua D. Vadeboncoeur, Thomas J. Aicher
Are You Welcomed? A Racial And Ethnic Comparison Of Perceived Welcomeness In Sport Participation, Trevor Bopp, Robert Turick, Joshua D. Vadeboncoeur, Thomas J. Aicher
International Journal of Exercise Science
International Journal of Exercise Science 10(6): 833-844, 2017. Sport has become racialized such that minority youth accrue limited health and academic benefits from participation, compared to their White counterparts. Understanding the welcomeness that minorities feel in sport, leisure and physical activities plays an important role in breaking down barriers to participation. Thus, the overall aim of this study is to further examine the determinants of sport participation, particularly as it relates to race, socialization and perceived welcomeness. College students (N = 451) scored their perceived level of welcomeness for Whites, African Americans and Hispanic/Latinos in 14 sports. Results reveal significant …
Effect Of Sedentary And Physical Activities On Children’S Food Choice, Allison M. Barry, Jesse L. Rhoades, John S. Fitzgerald, Dennis J. Caine, Dalonda L. Dalin, Tanis J. Walch
Effect Of Sedentary And Physical Activities On Children’S Food Choice, Allison M. Barry, Jesse L. Rhoades, John S. Fitzgerald, Dennis J. Caine, Dalonda L. Dalin, Tanis J. Walch
International Journal of Exercise Science
International Journal of Exercise Science 10(5): 702-712, 2017. Childhood obesity is a growing public health concern. Research has shown sedentary behavior (SB) increases children’s unhealthy food consumption, while physical activity (PA) decreases caloric intake and increases energy expenditure. The purpose of this study was to examine child snack choice following a bout of active, SB, and a mix of SB and active (SB-A). Participants included a volunteer sample of children (n=24) ranging from 9-13 years of age. A within-subjects simple experimental design was used, and children participated in three conditions: active, SB, and SB-A. After each condition, the children were …
Comparison Of Ventilatory Measures And 20 Km Time Trial Performance, Willard Peveler
Comparison Of Ventilatory Measures And 20 Km Time Trial Performance, Willard Peveler
International Journal of Exercise Science
International Journal of Exercise Science 10(4): 640-648, 2017. 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 …
King-Devick Performance Following Moderate And High Exercise Intensity Bouts., Billymo Rist, Adrian Cohen, Alan J. Pearce
King-Devick Performance Following Moderate And High Exercise Intensity Bouts., Billymo Rist, Adrian Cohen, Alan J. Pearce
International Journal of Exercise Science
International Journal of Exercise Science 10(4): 619-628, 2017. The King-Devick (K-D) test is a concise, noninvasive assessment of oculomotor and cognitive function that has been shown to detect sub-optimal brain performance following sports head trauma. Used in a number of sports as a sideline concussion assessment tool, the K-D test can be administered by non-medical personnel. However, the issue regarding the effect of exercise on K-D performance has not been fully explored. Using a randomized crossover design, this study aimed to compare the effect of two intensities of exercise on K-D performance. Twenty males (21.2 ± 1.9 years) completed the …
Correlation Between The Functional Movement Screen And Hip Mobility In Ncaa Division Ii Athletes, Matt T. Jenkins, Robert Gustitus, Mike Iosia, Taz Kicklighter, Yuichi Sasaki
Correlation Between The Functional Movement Screen And Hip Mobility In Ncaa Division Ii Athletes, Matt T. Jenkins, Robert Gustitus, Mike Iosia, Taz Kicklighter, Yuichi Sasaki
International Journal of Exercise Science
International Journal of Exercise Science 10(4): 541-549, 2017. The Functional Movement Screen (FMS) is a series of seven exercises designed to assess athletes prior to competitive training to determine dysfunctional movement patterns. The exercises include the deep squat (DS), hurdle step (HS), inline lunge (IL), shoulder mobility (SM), active straight leg raise (ASL), pushup (PU), and rotary stability (RS), all of which comprise the composite score (FMS CS). The purpose of this study was to determine correlations between the FMS screens and hip mobility. The specific hip range-of-motion exercises used were bilateral internal/external rotation (IRR, IRL ERL, ERR), and flexion/extension …
Differences Between The Grab Start And Track Start In Collegiate Swimmers, Alexander S. Dassoff, Naomi R. Forward, Charlie P. Katica
Differences Between The Grab Start And Track Start In Collegiate Swimmers, Alexander S. Dassoff, Naomi R. Forward, Charlie P. Katica
International Journal of Exercise Science
International Journal of Exercise Science 10(4): 515-521, 2017. The purpose of this investigation was to determine which foot stance, the track start (TS) or the grab start (GS), is most beneficial for competitive swimmers. Seven male and eight female collegiate swimmers participated in this study. The average participant age was 20.1 ± 1.13 years while the average years of competitive swimming experience was 10.8 ± 3.36 years. Participants performed three TS and three GS stances consecutively. Distance markers were placed on the side of the pool to determine where each swimmer entered the water. Video analysis was used to determine …
Demands Of Simulated Commuting Using An Electrically Assisted Bicycle, D. Taylor La Salle, Robert Shute, Matthew Heesch, Dustin Slivka
Demands Of Simulated Commuting Using An Electrically Assisted Bicycle, D. Taylor La Salle, Robert Shute, Matthew Heesch, Dustin Slivka
International Journal of Exercise Science
International Journal of Exercise Science 10(3): 454-464, 2017. The American College of Sports Medicine (ACSM) recommends adults participate in weekly aerobic activity for a minimum of 30 minutes moderate intensity exercise 5 days per week or 20 minutes of vigorous activity 3 days per week. The electrically assisted bicycle may help individuals achieve the ACSM’s aerobic recommendations and introduce inactive individuals to physical activity. To compare the physiological requirements of riding a bicycle with electric pedal assist versus non-assist among healthy active young adults. 6 males and 6 females completed two randomized cycling trials using electric pedal assist (PAB) and …
Time Course Of Changes In Neuromuscular Responses At 30% Versus 70% 1 Repetition Maximum During Dynamic Constant External Resistance Leg Extensions To Failure, Cory M. Smith, Terry J. Housh, Ethan C. Hill, Richard J. Schmidt, Glen O. Johnson
Time Course Of Changes In Neuromuscular Responses At 30% Versus 70% 1 Repetition Maximum During Dynamic Constant External Resistance Leg Extensions To Failure, Cory M. Smith, Terry J. Housh, Ethan C. Hill, Richard J. Schmidt, Glen O. Johnson
International Journal of Exercise Science
International Journal of Exercise Science 10(3): 365-378, 2017. The purpose of the current study was to examine the time course of changes in neuromuscular responses from the vastus medialis (VM) during low versus high intensity dynamic constant external resistance (DCER) leg extension muscle actions to failure. Thirteen men performed DCER leg extensions to failure at 30% and 70% 1-repetition maximum (1-RM) as well as 1-RM measurements pretest and posttest. Electromyogaphy and mechanomyographic signals were measured from the VM. There were no differences in neuromuscular responses pretest versus posttest 1-RM. There were time-dependent differences between the 30% and 70% 1-RM protocols. …