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Articles 1021 - 1050 of 2299

Full-Text Articles in Physiology

Recovery In Level 7-10 Usa Artistic Gymnastics, Stephen Buckner, Nicholas T. Bacon, Phillip Bishop Aug 2017

Recovery In Level 7-10 Usa Artistic Gymnastics, Stephen Buckner, Nicholas T. Bacon, Phillip Bishop

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 734-742, 2017. 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. The performance measures were reassessed at the …


Fluid Intake And Sweat Rate During Hot Yoga Participation, Stephanie Campbell, Robert C. Pritchett, Katie Cederburg, Tim Burnham, Kelly C. Pritchett Aug 2017

Fluid Intake And Sweat Rate During Hot Yoga Participation, Stephanie Campbell, Robert C. Pritchett, Katie Cederburg, Tim Burnham, Kelly C. Pritchett

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 721-733, 2017. Hot yoga participants are at risk for dehydration due to the nature of the environment they exercise in. Therefore, the purpose of this study was to investigate the pre-exercise hydration status, fluid balance, perception of sweat loss, and sweat sodium loss in 21 male and female hot yoga participants (mean age ± SD, 33.0 ± 10.5 yr; mass, 70.7 ± 11.0 kg). Data was recorded pre and post a one- hour hot yoga class (38.7 ± 2.6 °C, 36 ± 13% relative humidity). Pre-exercise urine specific gravity (USG), hydration status, body mass …


In-Season High-Intensity Interval Training Improves Conditioning In High School Soccer Players, Neal Howard, Stasinos Stavrianeas Aug 2017

In-Season High-Intensity Interval Training Improves Conditioning In High School Soccer Players, Neal Howard, Stasinos Stavrianeas

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 713-720, 2017. 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. The HIIT group performed 4-6 “all-out” sprints lasting 30s each, with 4.5 minute recovery, 3 times …


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 Aug 2017

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 …


Pilot Study Of Endurance Runners And Brain Responses Associated With Delay Discounting, Laura E. Martin, Jason-Flor V. Sisante, David R. Wilson, Angela A. Moody, Cary R. Savage, Sandra A. Billinger Aug 2017

Pilot Study Of Endurance Runners And Brain Responses Associated With Delay Discounting, Laura E. Martin, Jason-Flor V. Sisante, David R. Wilson, Angela A. Moody, Cary R. Savage, Sandra A. Billinger

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 690-701, 2017. 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. Twenty endurance runners (at least 20 miles/week) were recruited to undergo measures of self-report …


Clinical Outcomes Of Different Tempos Of Music During Exercise In Cardiac Rehabilitation Patients, Jarad S. Miller, Donna J. Terbizan Aug 2017

Clinical Outcomes Of Different Tempos Of Music During Exercise In Cardiac Rehabilitation Patients, Jarad S. Miller, Donna J. Terbizan

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 681-689, 2017. 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 …


Irisin And Fibronectin Type Iii Domain-Containing 5 Responses To Exercise In Different Environmental Conditions, Matthew Bubak, Matthew W.S. Heesch, Robert J. Shute, Nicholas E. Dinan, Terence L. Laursen, D. Taylor La Salle, Dustin R. Slivka Aug 2017

Irisin And Fibronectin Type Iii Domain-Containing 5 Responses To Exercise In Different Environmental Conditions, Matthew Bubak, Matthew W.S. Heesch, Robert J. Shute, Nicholas E. Dinan, Terence L. Laursen, D. Taylor La Salle, Dustin R. Slivka

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 666-680, 2017. 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 …


The Effect Of Psychomotor Performance, Cerebral And Arterial Blood Saturation Between African-American And Caucasian Males Before, During And After Normobaric Hypoxic Exercise, Matthew R. Feeback, Yongsuk Seo, Matthew Dancy, Ellen L. Glickman Aug 2017

The Effect Of Psychomotor Performance, Cerebral And Arterial Blood Saturation Between African-American And Caucasian Males Before, During And After Normobaric Hypoxic Exercise, Matthew R. Feeback, Yongsuk Seo, Matthew Dancy, Ellen L. Glickman

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 655-665, 2017. 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. Subjects were monitored for cerebral and arterial O2 saturation, as well as the Trail Making Test …


Blood Flow Restriction Training: Implementation Into Clinical Practice, William R. Vanwye, Alyssa Weatherholt, Alan E. Mikesky Aug 2017

Blood Flow Restriction Training: Implementation Into Clinical Practice, William R. Vanwye, Alyssa Weatherholt, Alan E. Mikesky

International Journal of Exercise Science

International Journal of Exercise Science 10(5): 649-654, 2017. 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. However, additional research is needed prior to widespread …


The Validity Of Submaximal Exercise Testing In Obese Women, Gabrielle Ringenberg Jun 2017

The Validity Of Submaximal Exercise Testing In Obese Women, Gabrielle Ringenberg

Mahurin Honors College Capstone Experience/Thesis Projects

Background: Submaximal exercise tests use heart rate responses to low-to-moderate intensity activity in order to predict cardiorespiratory fitness (VO2max). Currently used tests may be inappropriate for obese populations as obese women have altered heart rate responses to exercise. The purpose of this project is to test the validity of the Modified Bruce Protocol submaximal treadmill test in obese women. Methods: Normal-weight (NWG) and obese women (OBG) completed the Modified Bruce submaximal treadmill test (to predict VO2max using previously validated equations) and a maximal graded exercise test on a treadmill using the Standard Bruce Protocol (to obtain an …


Comparison Of Ventilatory Measures And 20 Km Time Trial Performance, Willard Peveler May 2017

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 …


Changes In Running Economy, Respiratory Exchange Ratio And Vo2max In Runners Following A 10-Day Altitude Training Camp, Sebastian R. Diebel, Ian Newhouse, David S. Thompson, Vineet B.K. Johnson May 2017

Changes In Running Economy, Respiratory Exchange Ratio And Vo2max In Runners Following A 10-Day Altitude Training Camp, Sebastian R. Diebel, Ian Newhouse, David S. Thompson, Vineet B.K. Johnson

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 629-639, 2017. 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) …


King-Devick Performance Following Moderate And High Exercise Intensity Bouts., Billymo Rist, Adrian Cohen, Alan J. Pearce May 2017

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 …


Mood And Performance Anxiety In High School Basketball Players: A Pilot Study, Steffen J. Hoover, Rachel K. Winter, Holly Mccutchan, Christina C. Beaudoin, Lawrence W. Judge, Lani M. Jones, Brianna Leitzlar, Donald L. Hoover May 2017

Mood And Performance Anxiety In High School Basketball Players: A Pilot Study, Steffen J. Hoover, Rachel K. Winter, Holly Mccutchan, Christina C. Beaudoin, Lawrence W. Judge, Lani M. Jones, Brianna Leitzlar, Donald L. Hoover

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 604-618, 2017. 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. Participants completed the Profile of Mood States (POMS) to assess mood and …


Mathematical Modeling And Expression Of Heart Rate Deflection Point Using Heart Rate And Oxygen Consumption, Kayla M. Baker, David H. Fukuda Ph.D., David Church, Michael B. La Monica, Kyle S. Beyer, Jay R. Hoffman, Jeffrey R. Stout Ph.D. May 2017

Mathematical Modeling And Expression Of Heart Rate Deflection Point Using Heart Rate And Oxygen Consumption, Kayla M. Baker, David H. Fukuda Ph.D., David Church, Michael B. La Monica, Kyle S. Beyer, Jay R. Hoffman, Jeffrey R. Stout Ph.D.

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 592-603, 2017. 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). No differences were found in HR or VO2 when comparing HRDP2SEG …


The Effects Of Work-To-Rest Ratios On Torque, Electromyographic, And Mechanomyographic Responses To Fatiguing Workbouts, Ethan C. Hill, Terry J. Housh, Cory M. Smith, Kristen C. Cochrane, Nathaniel D.M. Jenkins, Richard J. Schmidt, Glen O. Johnson May 2017

The Effects Of Work-To-Rest Ratios On Torque, Electromyographic, And Mechanomyographic Responses To Fatiguing Workbouts, Ethan C. Hill, Terry J. Housh, Cory M. Smith, Kristen C. Cochrane, Nathaniel D.M. Jenkins, Richard J. Schmidt, Glen O. Johnson

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 580-591, 2017. 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. Electromyographic …


Physiological Characteristics Of Projected Starters And Non-Starters In The Field Positions From A Division I Women’S Soccer Team, 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 May 2017

Physiological Characteristics Of Projected Starters And Non-Starters In The Field Positions From A Division I Women’S Soccer Team, 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

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 568-579, 2017. 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. Players were defined into ST (n=10) and …


Effects Of 12 Weeks Of Physical Training On Body Composition And Physical Fitness In Military Recruits, Leandra C B Campos, Fabio A D Campos, Thiago A R Bezerra, Idico L. Pellegrinotti May 2017

Effects Of 12 Weeks Of Physical Training On Body Composition And Physical Fitness In Military Recruits, Leandra C B Campos, Fabio A D Campos, Thiago A R Bezerra, Idico L. Pellegrinotti

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 560-567, 2017. The aim of this study was to analyze the morphological and functional changes in military recruits after twelve weeks of physical training. The sample consisted of 130 volunteer recruits aged 18-19 years. Anthropometric variables were assessed (body weight, height, body mass index, arm, waist, and hip circumference, waist/hip ratio, skinfold thickness of the triceps, suprailiac, and abdomen, and body fat percentage) and the sit-up test (1 minute), push-up test, and 12-minute running test. The physical training protocol involved running workouts, strength, agility, and flexibility. Descriptive statistical procedures were performed with mean, standard …


The Effect Of Betaine On Nitrate And Cardiovascular Response To Exercise, J. Luke Pryor, Stephen A. Wolf, Gary Sforzo, Tom Swensen May 2017

The Effect Of Betaine On Nitrate And Cardiovascular Response To Exercise, J. Luke Pryor, Stephen A. Wolf, Gary Sforzo, Tom Swensen

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 550-559, 2017. Betaine (BT) supplementation improves selected markers of physical performance, however, the mechanism(s) by which this change occurs remains largely unknown. Some speculate that BT may increase circulating nitrate concentrations, improving physical performance by augmentation of endothelial nitric oxide production. The purpose of this study was to investigate the effects of acute BT supplementation and exercise on plasma nitrate levels and related cardiovascular response (CVR). Placebo and BT trials were administered in a cross-over, randomized, double-blind, and counterbalanced fashion. Ten healthy college-aged volunteers consumed either a 250 ml placebo (carbohydrate-electrolyte beverage, CHO) or …


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 May 2017

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 …


Cortisol And Alpha-Amylase Changes During An Ultra-Running Event, Whitney P. Deneen, Alexis Jones May 2017

Cortisol And Alpha-Amylase Changes During An Ultra-Running Event, Whitney P. Deneen, Alexis Jones

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 531-540, 2017. Elevated stress hormone concentrations can positively affect an athlete’s overall performance during a competition, and in many cases, are necessary to be able to perform exercise. During extreme exercise, the body’s ability to utilize energy efficiently can affect an athlete’s performance. Elevated hormonal concentrations can have many benefits in regards to an athlete’s overall performance during a competition. The purpose of this study was to examine the effects of long distance running, such as seen during an ultra-running event (distances beyond 26.2 miles), on the activity of the hypothalamic-pituitary-adrenocortical (HPA) axis production …


Sleep-Hygiene Education Improves Sleep Indices In Elite Female Athletes, Shannon O'Donnell, Matthew W. Driller May 2017

Sleep-Hygiene Education Improves Sleep Indices In Elite Female Athletes, Shannon O'Donnell, Matthew W. Driller

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 522-530, 2017. The importance of sleep in providing psychophysiological recovery in elite athletes is often overlooked. In other populations (eg shift workers and adolescent students), sleep hygiene education may serve to acutely improve sleep indices. However, this is yet to be examined in an elite athlete setting. Therefore, the aim of the current study was to evaluate the effect of a sleep hygiene education session on sleep indices in elite athletes. The study involved 26 elite female netball athletes performing one week of baseline sleep monitoring (PRE), followed by a sleep hygiene education …


Differences Between The Grab Start And Track Start In Collegiate Swimmers, Alexander S. Dassoff, Naomi R. Forward, Charlie P. Katica May 2017

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 …


Effects Of Nasal Or Oral Breathing On Anaerobic Power Output And Metabolic Responses, Christine Recinto, Theodore Efthemeou, P. Tony Boffelli, James W. Navalta May 2017

Effects Of Nasal Or Oral Breathing On Anaerobic Power Output And Metabolic Responses, Christine Recinto, Theodore Efthemeou, P. Tony Boffelli, James W. Navalta

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 506-514, 2017. Nasal and oral exclusive breathing modes have benefits and drawbacks during submaximal exercise. It is unknown whether these responses would extend to anaerobic work performed at high intensity. Nine individuals (males N = 7, females N = 2) performed a standard Wingate Anaerobic cycle test on a cycle ergometer under nose (N) and mouth (M) only respiratory conditions, performed in a counterbalanced order. A 2 (condition: nose, mouth) x 6 (time: 0-5 sec, 5-10 sec, 10-15 sec, 15-20 sec, 20-25 sec, 25-30 sec) repeated measures ANOVA was used to analyze the data …


Rollers Versus Trainers: 10-Km Time Trial, Wayland Tseh, Tate Devlin, Taylor Milleson, T V. Barreira May 2017

Rollers Versus Trainers: 10-Km Time Trial, Wayland Tseh, Tate Devlin, Taylor Milleson, T V. Barreira

International Journal of Exercise Science

International Journal of Exercise Science 10(1): 497-505, 2017. The primary aim of this investigation was to determine which cycling training device, Rollers or Trainers, was most effective in improving 10-km time trial. Eight male and 6 female volunteers (N = 14; age = 23.6 ± 4.6 yrs; height = 172.7 ± 9.9 cm; body mass = 68.4 ± 10.4 kg; % body fat = 16.9 ± 7.7; VO2max = 61.0 ± 9.4 ml∙kg-1∙min-1) provided informed consent prior to participation. Participants performed a10-km time trial at baseline and were then randomly assigned into one of three …


Physical Activity And Physical Fitness In Pediatric Obesity: What Are The First Steps For Clinicians? Expert Conclusion From The 2016 Ecog Workshop, Grace O´Malley, Susanne Ring-Dimitriou, Paulina Nowicka, Andrea Vania, Marie-Laure Frelut, Nathalie Farpour-Lambert, Daniel Weghuber, David Thivel May 2017

Physical Activity And Physical Fitness In Pediatric Obesity: What Are The First Steps For Clinicians? Expert Conclusion From The 2016 Ecog Workshop, Grace O´Malley, Susanne Ring-Dimitriou, Paulina Nowicka, Andrea Vania, Marie-Laure Frelut, Nathalie Farpour-Lambert, Daniel Weghuber, David Thivel

International Journal of Exercise Science

International Journal of Exercise Science 10(4): 487-496, 2017. One of the main European Childhood Obesity Group mission is to assist healthcare workers in delivering evidence-based assessment and treatment of childhood obesity. Every year the ECOG annual work shop includes working groups whose objective is to highlight the major concerns faced by clinicians and practitioners who work in the field of pediatric obesity. This year, a working group was devoted to the assessment of physical activity and physical fitness in this population. The present commentary attempts to summarize the main themes identified by practitioners during these workshops in order to provide …


Casein Protein Supplementation In Trained Men And Women: Morning Versus Evening, Jose Antonio Apr 2017

Casein Protein Supplementation In Trained Men And Women: Morning Versus Evening, Jose Antonio

International Journal of Exercise Science

International Journal of Exercise Science 10(3): 479-486, 2017. The purpose of this investigation was to determine the effects of casein supplementation (54 grams) in the morning (Casein-MOR) or evening (Casein-EVE) (90 minutes or less prior to sleep) on measures of body composition and exercise performance in trained men and women. Twenty-six healthy men and women who had been training regularly for greater than 12 months completed this 8-week study (mean±SD; Casein-MOR group [n=14, seven male, seven female]: 30.0±8.2 yr; 170.7±9.5 cm; 70.9±13.9 kg. Casein-EVE group [n=12, nine male, three female]: 28.9±9.5 yr; 172.9±7.3 cm; 72.6±10.9 kg). Subjects in each group …


Assessment Of Differences In The Anthropometric, Physiological And Training Characteristics Of Finishers And Non-Finishers In A Tropical 161-Km Ultra-Marathon, Philip Ls Tan, Frankie Hy Tan, Andrew N. Bosch Apr 2017

Assessment Of Differences In The Anthropometric, Physiological And Training Characteristics Of Finishers And Non-Finishers In A Tropical 161-Km Ultra-Marathon, Philip Ls Tan, Frankie Hy Tan, Andrew N. Bosch

International Journal of Exercise Science

International Journal of Exercise Science 10(3): 465-478, 2017. 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) …


Demands Of Simulated Commuting Using An Electrically Assisted Bicycle, D. Taylor La Salle, Robert Shute, Matthew Heesch, Dustin Slivka Apr 2017

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 …


Self-Optimization Of Stride Length Among Experienced And Inexperienced Runners, Iain Hunter, James B. Tracy, Jared Ward Apr 2017

Self-Optimization Of Stride Length Among Experienced And Inexperienced Runners, Iain Hunter, James B. Tracy, Jared Ward

International Journal of Exercise Science

International Journal of Exercise Science 10(3): 446-453, 2017. Experienced runners appear to naturally select a stride length which is optimal for minimizing oxygen uptake. However, whether this ability is naturally built into the human body or whether it is learned through experience has not been previously tested. This study investigated whether inexperienced runners are as capable as experienced runners of self-optimizing stride length to minimize oxygen uptake. Thirty-three subjects (nineteen experienced and fourteen inexperienced) ran for twenty-minutes while preferred and economical stride lengths were measured. A t-test checked for differences between the experienced and inexperienced groups in the percent increase …