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Articles 2881 - 2910 of 3176
Full-Text Articles in Exercise Physiology
Recreational Cyclists: The Relationship Between Low Back Pain And Training Characteristics, Samantha J. Schulz, Susan J. Gordon
Recreational Cyclists: The Relationship Between Low Back Pain And Training Characteristics, Samantha J. Schulz, Susan J. Gordon
International Journal of Exercise Science
This study investigated the relationship between low back pain (LBP) and training characteristics in recreational cyclists. Purposive sampling was used to recruit sixty-six recreational cyclists from nine cycling clubs. Participants completed a survey reporting training characteristics and LBP behaviour during a usual week of cycling. This included percent of time spent cycling in three common riding positions, cycling terrain, average cycling pace, number of gears, days per week cycled and number of cycling events per year. Fifty percent reported LBP during or after cycling or smoking and LBP. Cyclists who reported LBP cycled significantly further in a usual week of …
Delayed Wound Healing: Can Exercise Accelerate It?, K Todd Keylock, Hilary Young
Delayed Wound Healing: Can Exercise Accelerate It?, K Todd Keylock, Hilary Young
International Journal of Exercise Science
Poorly healing wounds affect millions around the world, yet preventive methods and low-cost, effective treatments are few. Wounds heal quickly through well-coordinated phases in those who are healthy and active but can become chronically nonhealing as a result of disease and inactivity. Recently it has been reported that moderate aerobic exercise accelerated healing rates in the aged. High levels of inflammation are known to delay wound healing, and aging and disease are associated with chronically increased inflammation. Therefore, exercise may help speed healing by reducing inflammation to healthier levels not only in the aged, but also in other populations with …
Concurrent Visual Feedback, Practice Organization, And Spatial Aiming Accuracy In Rapid Movement Sequences, David E. Sherwood‡, Brian Duffell*
Concurrent Visual Feedback, Practice Organization, And Spatial Aiming Accuracy In Rapid Movement Sequences, David E. Sherwood‡, Brian Duffell*
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 78-91, 2010. While the availability of visual feedback is a well-known factor influencing the accuracy of rapid aiming movements, little is known about how vision might interact with a contextual variable like practice organization. In the current study, the interaction of concurrent visual feedback (CVF) and practice organization on aiming movement accuracy was investigated in the dominant limb of 40 college-aged participants. Participants performed “triplets” of rapid aiming movements with a lightweight lever in the sagittal plane involving short (20°), medium (40°), long (60°) distances and were randomly assigned to one of four groups …
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 68-77, 2010. The purpose of this study was to investigate the asymmetry of force fluctuation in the leg muscles during isometric knee extension and flexion. Twenty healthy males (21±2 years) performed the maximal voluntary isometric contraction (MVC) in knee extensor and flexor. On the basis of MVC measurement, the subjects performed sustained isometric knee extension and flexion for 15s at levels corresponding to 10%, 20% and 30% MVC. The main findings of this study were: (1) a greater force fluctuation was found in the stronger MVC limb than in the weaker MVC limb at …
Myogenin Modulates Exercise Endurance By Altering Skeletal Muscle Metabolism, James Eric Meadows
Myogenin Modulates Exercise Endurance By Altering Skeletal Muscle Metabolism, James Eric Meadows
Dissertations and Theses (Open Access)
The function of myogenic regulatory factors (MRFs) during adult life is not well understood. The requirement of one of these MRFs, myogenin (Myog), during embryonic muscle development suggests an equally important role in adult muscle. In this study, we have determined the function of myogenin during adult life using a conditional allele of Myog. In contrast to embryonic development, myogenin is not required for adult viability, and Myog-deleted mice exhibited no remarkable phenotypic changes during sedentary life. Remarkably, sedentary Myog-deleted mice demonstrated enhanced exercise endurance during involuntary treadmill running. Altered blood glucose and lactate levels in sedentary Myog-deleted mice after …
Effect Of The E3 Fitness Grips On Running Economy, Julie A. Szabo*, Brian B. Parr‡, Jarod A. Holt*, Christopher M. Dewitt‡
Effect Of The E3 Fitness Grips On Running Economy, Julie A. Szabo*, Brian B. Parr‡, Jarod A. Holt*, Christopher M. Dewitt‡
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 64-67, 2010. The purpose of this study was to evaluate the effect of the E3 Fitness Grips (BioGrip, Inc., Rancho Cordova, CA) on running economy, as measured by oxygen uptake (VO2), and heart rate (HR) during submaximal treadmill running. Eleven subjects, seven female and four male, completed a submaximal running test on a treadmill while VO2 and HR were measured continuously. After achieving steady-state at a speed and grade that elicited a VO2 equivalent to 70% VO2max, the subjects ran for five minutes holding the E3 Fitness Grips (G) and five minutes without the …
Heat Stress And Injury Prevention Practices During Summer High School Football Training In South Texas, Christopher M. Hearon‡, Alberto Ruiz‡, Zachary J. Taylor†
Heat Stress And Injury Prevention Practices During Summer High School Football Training In South Texas, Christopher M. Hearon‡, Alberto Ruiz‡, Zachary J. Taylor†
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 55-63, 2010. The purpose was to describe practice conditions influencing the risk of heat stress to athletes in summer football training in South Texas high schools, and to compare these conditions to ACSM recommendations for heat stress/injury risk reduction in this population. Thirty (N=30) high school summer football practices were observed. Wet bulb globe temperature (WBGT) was measured before/after practices and practices were observed for: duration/ structure; athlete clothing; and rest break frequency/duration/content. Practices averaged 125+31 min and WBGT (pre- to post-practice) was 29.7+2.1°C to 31.2+2.2°C for morning, and 31.2+1.6°C to 28.9+1.2°C for evening …
Leveraging Online Learning Resources To Teach Core Research Skills To Undergraduates At A Diverse Research University, Brian K. Mcfarlin, Whitney L. Breslin, Katie C. Carpenter, Kelley Strohacker, Randi J. Weintraub
Leveraging Online Learning Resources To Teach Core Research Skills To Undergraduates At A Diverse Research University, Brian K. Mcfarlin, Whitney L. Breslin, Katie C. Carpenter, Kelley Strohacker, Randi J. Weintraub
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 49-54, 2010. Today’s students have unique learning needs and lack knowledge of core research skills. In this program report, we describe an online approach that we developed to teach core research skills to freshman and sophomore undergraduates. Specifically, we used two undergraduate kinesiology (KIN) courses designed to target students throughout campus (KIN1304: Public Health Issues in Physical Activity and Obesity) and specifically kinesiology majors (KIN1252: Foundations of Kinesiology). Our program was developed and validated at the 2nd largest ethnically diverse research university in the United States, thus we believe that it would be effective …
The Effects Of 2 Different Arm Positions On Maximum Trunk Flexion In The Bodyweight Squat, A. Page Glave, Jacilyn Olson, Danika K. Applegate, Ro Di Brezzo
The Effects Of 2 Different Arm Positions On Maximum Trunk Flexion In The Bodyweight Squat, A. Page Glave, Jacilyn Olson, Danika K. Applegate, Ro Di Brezzo
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Relationship Of Rate Of Loading In Overground And Treadmill Gait, Cameron E. Sheid, Jody L. Riskowski, Huiying Yu
Relationship Of Rate Of Loading In Overground And Treadmill Gait, Cameron E. Sheid, Jody L. Riskowski, Huiying Yu
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
The Correlation Between Visual Observations And Inclinometric Measurements For Special Tests Related To Patellofemoral Pain Syndrome, Erin Quada
Human Movement Studies & Special Education Theses & Dissertations
Patellofemoral pain syndrome (PFPS) is generally described as an insidious onset with pain increasing during running, jumping, ascending and descending stairs as well as sitting with the knees flexed for an extended period of time. Clinicians often use special tests in injury evaluations and range of motion assessments, usually making a visual observation of that status of the patient. The purpose of this study was to examine how interval measurements utilized in flexibility and range of motion assessments correlate with visual observations of special tests (active knee extension test, Thomas test, Ober's test, rectus femoris flexibility, and Craig's test). The …
The Effects Of Two Different Fatigue Protocols On Lower Extremity Kinematics And Kinetics During An Unanticipated Running Stop-Jump, David L. Quammen
The Effects Of Two Different Fatigue Protocols On Lower Extremity Kinematics And Kinetics During An Unanticipated Running Stop-Jump, David L. Quammen
Human Movement Studies & Special Education Theses & Dissertations
Altered neuromuscular control strategies and biomechanical movement risk factors are most likely to contribute to the increased incidence of non-contact ACL injury for female athletes. Neuromuscular control strategies and movement patterns are further altered when the effects of fatigue are present. The purpose of this study was to determine neuromechanical differences between two fatigue protocols [Slow Linear Oxidative Fatigue Protocol (SLO-FP) and Functional Agility Short-Term Fatigue Protocol (FASTFP)] when performing a running stop-jump task (RS). A sample of convenience of fifteen Division I female soccer players (age= 19.2 ± 0.8 years; height= 1.67 ± 0.05 m; mass= 61.7 ± 8.1 …
The Effects Of Two Types Of Fatigue On An Unanticipated Side-Step Cutting Task As Measured By Kinematic And Kinetic Variables, Shawn E. Lucci
The Effects Of Two Types Of Fatigue On An Unanticipated Side-Step Cutting Task As Measured By Kinematic And Kinetic Variables, Shawn E. Lucci
Human Movement Studies & Special Education Theses & Dissertations
Fatigue has been shown to alter the neuromechanics of lower extremity. To date, no study has examined the effects of two types of fatigue on kinetics and kinematics. To determine neuromechanical differences between two fatigue protocols [Slow Linear Oxidative Fatigue Protocol (SLO-FP) and Functional Agility Short-Term Fatigue Protocol (FAST-FP)] when performing an unanticipated sidestep cutting task. Fifteen female collegiate soccer players (age=19.2±0.8 years; height=l.67±0.05m; mass=61.7±8.lkg) participated in this study. Participants were free of lower extremity injury at time of participation, and performed five successful trials of a sidestep cutting (SS) task pre and post fatigue protocols. For the SLO-FP, a …
Effects Of Surface Depth And Compaction On Impact Deceleration Of Dirt And Synthetic Surface Materials For Equine Racetracks, Akihiro Yamaguchi, Jacob J. Setterbo, Mont Hubbard, Shrinivasa K. Upadhyaya, Susan M. Stover
Effects Of Surface Depth And Compaction On Impact Deceleration Of Dirt And Synthetic Surface Materials For Equine Racetracks, Akihiro Yamaguchi, Jacob J. Setterbo, Mont Hubbard, Shrinivasa K. Upadhyaya, Susan M. Stover
International Journal of Exercise Science: Conference Proceedings
Abstract is attached.
Quantative Semg Description Of Upper Extremity Muscle Activation During Baseball Pitching: Pre Fatigue & Fatigue, Hillary Plummer, Gretchen D. Oliver, David W. Keeley
Quantative Semg Description Of Upper Extremity Muscle Activation During Baseball Pitching: Pre Fatigue & Fatigue, Hillary Plummer, Gretchen D. Oliver, David W. Keeley
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Validity Of Two Dimensional Vicon Motus Software At Varying Camera Angles, Dayanand Kiran, Mary Carlson, Daniel Medrano Jr., Darla R. Smith
Validity Of Two Dimensional Vicon Motus Software At Varying Camera Angles, Dayanand Kiran, Mary Carlson, Daniel Medrano Jr., Darla R. Smith
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Model Predicting Shoulder Distraction Force During Baseball Pitching, David W. Keeley, Gretchen D. Oliver
Model Predicting Shoulder Distraction Force During Baseball Pitching, David W. Keeley, Gretchen D. Oliver
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Next Generation Design For An In-Home Video Game Enhanced Physical Therapy System For Pediatric Patients With Cerebral Palsy, Meghan Huber
Next Generation Design For An In-Home Video Game Enhanced Physical Therapy System For Pediatric Patients With Cerebral Palsy, Meghan Huber
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Daily Knee Joint Laxity In Females Across A Menstrual Cycle And Males Across A Calendar Month, Daniel Medrano Jr., Darla R. Smith, Dayanand Kiran, Mary E. Carlson
Daily Knee Joint Laxity In Females Across A Menstrual Cycle And Males Across A Calendar Month, Daniel Medrano Jr., Darla R. Smith, Dayanand Kiran, Mary E. Carlson
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
How Children Walk: Bout Length During Real-World Locomotor Behavior, Michael S. Orendurff
How Children Walk: Bout Length During Real-World Locomotor Behavior, Michael S. Orendurff
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
The Effect Of Exercise On Balance And Peripheral Neuropathy In Older Adults With Type 2 Diabetes, Elisabeth I. Cavegn, Jody Riskowski
The Effect Of Exercise On Balance And Peripheral Neuropathy In Older Adults With Type 2 Diabetes, Elisabeth I. Cavegn, Jody Riskowski
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Effects Of Different Crutch Types And Arm Dominance On Shoulder Joint Kinetics During Three Point Swing Through Gait, Kunal Singhal, Jeffery B. Casebolt, Moon-Seok Kwon, Elina Jackson, Young-Hoo Kwon
Effects Of Different Crutch Types And Arm Dominance On Shoulder Joint Kinetics During Three Point Swing Through Gait, Kunal Singhal, Jeffery B. Casebolt, Moon-Seok Kwon, Elina Jackson, Young-Hoo Kwon
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
The Effect Of Target Height On The Trunk, Pelvis, And Thigh Kinematics In The Taekwondo Roundhouse Kick, Jae-Woong Kim, Je-Min Kim, Sang-Woo Lee, Ki-Hoon Han, Young-Hoo Kwon
The Effect Of Target Height On The Trunk, Pelvis, And Thigh Kinematics In The Taekwondo Roundhouse Kick, Jae-Woong Kim, Je-Min Kim, Sang-Woo Lee, Ki-Hoon Han, Young-Hoo Kwon
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
Characterization Of Gait Using Inertial Measurement Units And Neural Networks, Stephen Slaughter, Caroline Hilbert, Noah Jouett, Maureen Mcewen
Characterization Of Gait Using Inertial Measurement Units And Neural Networks, Stephen Slaughter, Caroline Hilbert, Noah Jouett, Maureen Mcewen
International Journal of Exercise Science: Conference Proceedings
No abstract provided.
The Effects Of Niacin And Aerobic Exercise In Postmenopausal Women Glucose, Insulin And C-Peptide Profiles, Heidi Bidstrup, Yunsuk Koh, James Rowe, David Nichols, Vic Ben-Ezra, Kyle Biggerstaff
The Effects Of Niacin And Aerobic Exercise In Postmenopausal Women Glucose, Insulin And C-Peptide Profiles, Heidi Bidstrup, Yunsuk Koh, James Rowe, David Nichols, Vic Ben-Ezra, Kyle Biggerstaff
International Journal of Exercise Science: Conference Proceedings
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A Rapid, Flow Cytometry-Based Assay For The Determination Of Natural Killer Cell Activity In Isolated Periphery Blood Mononuclear Cells, Emily C.P. Lavoy, Brian K. Mcfarlin
A Rapid, Flow Cytometry-Based Assay For The Determination Of Natural Killer Cell Activity In Isolated Periphery Blood Mononuclear Cells, Emily C.P. Lavoy, Brian K. Mcfarlin
International Journal of Exercise Science: Conference Proceedings
Natural killer cell activity (NKCA) is an important assessment of innate immunity in humans. Natural killer (NK) cells are known to be affected by exercise; therefore it is of interest to have an efficient method for measuring NKCA in pre- and post-exercise blood samples. Assays for NKCA include incubating human NK cells (effector cells) with stained target cells. The target cells are typically from the human leukemia cell line K562. The number of K562 target cells killed can be determined using a dead cell dye. Control target cells incubated alone provide a measure of spontaneous cell death. PURPOSE: The purpose …
Corticosterone Levels In Sedentary, Wheel, And Treadmill Acclimated Mice Following A Bout Of Forced Treadmill Running, Nadia H. Agha, Joesph Potucek, Kelley Strohacker, Whitney L. Breslin, Brian K. Mcfarlin
Corticosterone Levels In Sedentary, Wheel, And Treadmill Acclimated Mice Following A Bout Of Forced Treadmill Running, Nadia H. Agha, Joesph Potucek, Kelley Strohacker, Whitney L. Breslin, Brian K. Mcfarlin
International Journal of Exercise Science: Conference Proceedings
Murine models have been used to study the immune response to exercise under various diet and training interventions .Our laboratory has previously studied the effect of forced exercise versus voluntary exercise on fasting blood glucose measurements. However, forced exercise may result in increased corticosterone levels. This may affect glucose levels and subsequent weight gain. Male, wild-type CD-1 mice were randomly divided into the following groups: forced exercise, wheel running, and sedentary. After a 8- weeks of the intervention, all mice were placed on a treadmill and forced to run for 30 minutes. Blood was collected from the mice prior to …
No Impact Of Cmv Or Ebv Seropositivity On The Frequency Of Highly Differentiated T-Cells In Mexican-American Adolescents, Guillaume Spielmann, Craig A. Johnston, Richard J. Simpson, Brian K. Mcfarlin, John P. Foreyt
No Impact Of Cmv Or Ebv Seropositivity On The Frequency Of Highly Differentiated T-Cells In Mexican-American Adolescents, Guillaume Spielmann, Craig A. Johnston, Richard J. Simpson, Brian K. Mcfarlin, John P. Foreyt
International Journal of Exercise Science: Conference Proceedings
Recurring activations of the prevalent latent herpes viruses Cytomegalovirus (CMV) and Epstein-Barr virus (EBV) induces immune cell division leading to the premature terminal differentiation of T-cells. Terminally differentiated T-cells are known to accumulate with age causing a reduction in the naïve T-cell repertoire, which compromises the ability of the adaptive immune system to respond to novel pathogens. Although CMV and EBV seropositivity are hallmarks of the “immune risk profile” and are known to influence the frequency of terminally differentiated T-cells and increase infection risk in adults, it is not known if CMV or EBV impacts on the frequency of these …
The Effects Of Exercise And A Low-Fat Diet On Monocyte Tlr Expression And Disease Risk In Mice, Katie C. Carpenter, Kelley Strohacker, Whitney Breslin, Nadia Agha, Thomas W. Lowder, Richard J. Simpson, Brian K. Mcfarlin
The Effects Of Exercise And A Low-Fat Diet On Monocyte Tlr Expression And Disease Risk In Mice, Katie C. Carpenter, Kelley Strohacker, Whitney Breslin, Nadia Agha, Thomas W. Lowder, Richard J. Simpson, Brian K. Mcfarlin
International Journal of Exercise Science: Conference Proceedings
Excess adiposity increases systemic inflammation, which is implicated in various diseases. Physical activity is a common treatment to reverse weight gain and increased disease risk; however, little evidence is available to determine if forced or voluntary exercise is more effective in mice. Such information has implications for the refinement of human exercise interventions. PURPOSE: To determine if 8-weeks of exercise combined with low-fat feeding reverses changes in disease risk, monocyte concentration and monocyte TLR2/TLR4 expression. METHODS: For 12-months, 24 CD-1 mice underwent pre-treatment, consuming either a low-fat (10% kcal from fat, N=6) or high-fat (60% kcal from fat, N=18) diet …
Cell-Surface Receptor Expression On Monocytes Of Young And Old Mice, Kelley Strohacker, Whitney L. Breslin, Brian K. Mcfarlin
Cell-Surface Receptor Expression On Monocytes Of Young And Old Mice, Kelley Strohacker, Whitney L. Breslin, Brian K. Mcfarlin
International Journal of Exercise Science: Conference Proceedings
Background. Monocyte assessment is used in aging research. In humans, reduced expression of toll-like receptors, T-lymphocyte priming receptors and increases in intracellular adhesion molecules on monocytes have been associated with functional decrements, resulting in increased disease risk. While use of mouse models is extensive in aging research, mouse monocyte assessment is rare. We aimed to evaluate differences in cell-surface protein expression in classic (CD115+/Gr-1high) and non-classic (CD115+/Gr-1low) monocyte subsets of old and young mice. Methods. Venous blood was drawn from 18 old (80-wks) and 18 young CD-1 mice (15-20-wks). Flow cytometry was used to assess subpopulations of CD115+ monocytes for …