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Articles 2281 - 2299 of 2299
Full-Text Articles in Physiology
Effects Of Exercise Induced Fatigue On Postural Balance: A Comparison Of Treadmill Versus Cycle Fatiguing Protocols, Katherine Wright
Effects Of Exercise Induced Fatigue On Postural Balance: A Comparison Of Treadmill Versus Cycle Fatiguing Protocols, Katherine Wright
Masters Theses & Specialist Projects
The purpose of this study was to examine the effects of muscle fatigue after a treadmill versus cycle ergometer incremental test on postural balance indices and recovery time recreationally trained individuals. The Bruce Treadmill Test and the Incremental Cycle Ergometer test were used to induce fatigue. Each subject (N=16) performed both exercises, but the order of the exercises was randomized. The subjects performed balance measures on a Biodex Balance System via the Dynamic Balance Test at level 5 and indices were recorded as given. Balance was measured a total of nine times (pre-exercise, immediately post, and at 3, 6, 9, …
Changes In Emg And Finger Force With Repeated Hangs From The Hands In Rock Climbers, Phillip B. Watts‡, Randall L. Jensen‡, Sara M. Agena†, John A. Majchrzak†, Rebecca A. Schellinger†, Cory S. Wubbels†
Changes In Emg And Finger Force With Repeated Hangs From The Hands In Rock Climbers, Phillip B. Watts‡, Randall L. Jensen‡, Sara M. Agena†, John A. Majchrzak†, Rebecca A. Schellinger†, Cory S. Wubbels†
International Journal of Exercise Science
The nature and degree of fatigue in muscles that control finger position during repeated sustained efforts in rock climbing have not been described. The purpose of this study was to identify changes in maximum hang time and forearm electromyogram (EMG) during repeated maximum duration hangs from a simulated rock feature. A second objective was to determine the effect of different recovery times between hangs upon changes in finger force. Five experienced rock climbers performed 2 test sessions on different days in a randomized order. Each session involved 8 repetitions of a maximum duration hang with either 1 min (R1) or …
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part Ii, Eric J. Wilson*, David E. Sherwood‡
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part Ii, Eric J. Wilson*, David E. Sherwood‡
International Journal of Exercise Science
In Part I of this study, it was shown that performing a shorter distance aiming movement prior to a longer distance aiming movement resulted in overshooting of the short movement and undershooting of the longer movement compared to control conditions. However, the finding was limited, unexpectedly, to the nondominant hand. To replicate the prior result and to determine the effect of practice organization on movement accuracy, right-handed (n =24) participants (aged 18-22) produced a sequence of three rapid lever reversals combining short (20°) and long (60°) movements with an intermovement interval of 2.5 s with the dominant hand. Greater overshooting …
Reviewing An Original Research Manuscript For The International Journal Of Exercise Science: A Guide For Students And Professionals, Kathy J. Simpson
Reviewing An Original Research Manuscript For The International Journal Of Exercise Science: A Guide For Students And Professionals, Kathy J. Simpson
International Journal of Exercise Science
Considerations for the review process of manuscripts submitted to the International Journal of Exercise Science are presented. Initial steps to evaluation include reading the abstract to determine your ability as a reviewer, becoming familiar with the journal requirements, and formulating an initial impression of the manuscript. At this point an assessment is made to determine how the reviewer should treat the manuscript. If it is determined that the manuscript is acceptable with minor revisions, or may be acceptable with major changes, a full review should be performed. A full review of the manuscript requires a thorough examination of the major …
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part I, Eric J. Wilson, David E. Sherwood
Do The Principles Of Motor Program Editing Apply To Longer Sequences Of Rapid Aiming Movements? Part I, Eric J. Wilson, David E. Sherwood
International Journal of Exercise Science
Prior work had shown that performing a shorter distance aiming movement prior to a longer distance aiming movement resulted in overshooting of the short movement and undershooting of the longer movement compared to repetition of the same movement. The main question was whether the same interference effects would be found in a three-movement sequence. Right-handed (N = 24) participants (aged 18-22) produced a sequence of two or three bimanual rapid lever reversals combining short (20°) and long (60°) movements with an intermovement interval of 2.5 s beginning with either the dominant or nondominant hand. Participants overshot the short target and …
The Relationship Between Upper Arm Anthropometrical Measures And Vertical Jump Displacement, Richard A. Reeves, Ocie D. Hicks, James W. Navalta
The Relationship Between Upper Arm Anthropometrical Measures And Vertical Jump Displacement, Richard A. Reeves, Ocie D. Hicks, James W. Navalta
International Journal of Exercise Science
The purpose of this study was to determine if upper body segment length or mass contributes to vertical jump (VJ) displacement. Seventeen men (n=9) and women (n=8) who were active recreationally participated in this investigation. Subjects performed VJ for maximal displacement, and skeletal length measurements of the humerus (acromion following the lateral lip to the greater tuberosity), ulna (olecranon to the ulnar styloid process), and hand (lunate to distal end of third phalanx) were obtained by palpation of boney landmarks and a standard tape measure. Pearson Product Moment Correlation Coefficients were used to compare the data with statistical significance accepted …
Dabbing The Skin Surface Dry During Ice Massage Augments Rate Of Temperature Drop, Amrik S. Sidhu, Gary Lentell, Robert Pettitt
Dabbing The Skin Surface Dry During Ice Massage Augments Rate Of Temperature Drop, Amrik S. Sidhu, Gary Lentell, Robert Pettitt
International Journal of Exercise Science
While ice massage (IM) is a rapid cooling technique used to facilitate therapeutic movements in the rehabilitation process, evidence of its efficacy over alternative therapeutic protocols is scarce. We determined whether dabbing the skin surface dry during a standard IM treatment would lead to greater rate of skin temperature reduction in comparison to without dabbing; and whether dabbing the skin would lead to an acute change in flexibility. Sixteen healthy volunteers received a “dabbing” and “non-dabbing” 7-minute IM treatment over the surface of each triceps surae muscle. Minute-by-minute temperature change in skin surface was evaluated using an infrared thermometer. Active …
Forearm Emg During Rock Climbing Differs From Emg During Handgrip Dynamometry, Phillip B. Watts, Randall L. Jensen, Edward Gannon, Randy Kobeinia, Jeremy Maynard, Jennifer Sansom
Forearm Emg During Rock Climbing Differs From Emg During Handgrip Dynamometry, Phillip B. Watts, Randall L. Jensen, Edward Gannon, Randy Kobeinia, Jeremy Maynard, Jennifer Sansom
International Journal of Exercise Science
Grip force, as measured via handgrip dynamometry, is often given importance in the study of rock climbing performance. Whether handgrip dynamometry produces a degree of muscle activation comparable to actual climbing has not been reported. Furthermore, the degree and variability of muscle activation for various configurations during climbing are unknown. The purpose of this study was to record forearm EMG responses for six hand configurations during climbing and to compare these responses to a maximum handgrip test. Five experienced climbers signed informed consent to participate in the study. Subjects performed four moves up (UP) and down (DN) on an overhanging …
On A State-Sponsored Sport System In China, Jie Cao, Pan Zhiwei
On A State-Sponsored Sport System In China, Jie Cao, Pan Zhiwei
International Journal of Exercise Science
The gold medal success of China in recent Olympic Games can be traced to the advancement of the state-sponsored sport system (SSSS). While the program was developed initially through socialist ideals, it is more than a centralized government system to monopolize resources for glorified sport performance. Participation in competition is an inherent part of the human condition. Success in athletics is associated with national identity and has economic, social, and cultural implications. Because of this, it is essential that the SSSS adjust and improve to keep pace with other facets of China’s quickly changing national reform. In association with emerging …
Similarities Between Etiological Models Of Eating Disorder Symptomatology And Muscle Dysmorphia Symptomatology, Jennifer Jonda
Similarities Between Etiological Models Of Eating Disorder Symptomatology And Muscle Dysmorphia Symptomatology, Jennifer Jonda
Masters Theses & Specialist Projects
Muscle Dysmorphia (MD) has recently been conceptualized as the male form of Eating Disorders (ED), although it is not currently classified as an ED. The current study compares etiological models of MD symptomatology (based on Grieve's [2007] conceptual model of MD) and ED symptomatology (based on Stice's [1994] conceptual model of Bulimia Nervosa). In both models, it was hypothesized that sociocultural influences on appearance (SIA) would predict body dissatisfaction (BD), and that this relationship would be mediated by self-esteem (SE) and perfectionism (P); that BD would predict negative affect (NA); and that NA would predict MD and ED symptomatology. Two-hundred-forty-seven …
The Effect Of Varying Cadence In Cycle Ergometry On Submaximal Predictions Of Peak Oxygen Uptake, Zachary Callahan
The Effect Of Varying Cadence In Cycle Ergometry On Submaximal Predictions Of Peak Oxygen Uptake, Zachary Callahan
Masters Theses & Specialist Projects
The purpose of this study was to investigate the effect that varying cadence had on the ability of a submaximal cycle ergometry test to accurately predict peak oxygen uptake (VO2) using the standard YMCA protocol workloads. There has been limited scholarship investigating the effect that varying cadence has on trained cyclists and almost none on untrained participants. For this study twelve moderately healthy participants (age: 20.75 ± 1.87, body fat: 15.8 ± 4.91 %) who did not use cycling as part of their workout regime performed a peak VO2 cycle test and three randomized submaximal tests. The three submaximal tests …
Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans
Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans
Architectural and Manufacturing Sciences Faculty Publications
No abstract provided.
Improving The Accuracy Of The Vo2 Max Prediction Obtained From Submaxial Ymca Testing, Lindsay Parson
Improving The Accuracy Of The Vo2 Max Prediction Obtained From Submaxial Ymca Testing, Lindsay Parson
Masters Theses & Specialist Projects
Maximal oxygen uptake (VO2 max) is the best criterion measure for aerobic fitness and the prescription of exercise intensity for programs designed to enhance cardiorespiratory fitness. There are two ways of obtaining VO2 max: maximal tests, which require subjects to exercise to the point of volitional exhaustion and provide the most accurate measure; and submaximal tests, which are less physically strenuous but have lower accuracy. A popular submaximal protocol is the YMCA bike test. Steady state heart rate (HR) is measured at multiple submaximal workloads and extrapolated to the subject's estimated maximal HR (220-age). The VO2 corresponding to the estimated …
The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols
The Influence Of Music On Preferred Intensity And Associated Physiological Responses, David Nuckols
Masters Theses & Specialist Projects
Music is a part of everyday life and has an effect on people in many different ways. Music can be as individual as the person who listens to it, and thus there are many genres for many different tastes. Music has accompanied exercise and sport for quite some time. It has been shown to have varying psychophysical effects including decreasing ratings of perceived exertion (RPE) at a given sub-max intensity, enhancing arousal control, and affective states at high and medium intensities. Also the improved synchronization of sub-maximal exercise with music may result in increased work output. The proposed ability of …
Acute Cardiovascular Response And Perception Of Effort Between The Super Slow And Gold Standard Resistance Training Protocols, Phillip Wickwire
Acute Cardiovascular Response And Perception Of Effort Between The Super Slow And Gold Standard Resistance Training Protocols, Phillip Wickwire
Masters Theses & Specialist Projects
Super Slow training was proposed by Ken Hutchins in a book entitled Super Slow: The Ultimate Exercise Protocol (1992). Since then Super Slow training has been proposed to improve strength more effectively than traditional resistance training and improve cardiovascular measures above aerobic exercise. However, whether this type of training is safe for the older, possibly hypertensive population to which it is being targeted is questionable. To help provide an answer to this question the purpose of this study was to measure blood pressure, heart rate (HR), and ratings of perceived exertion (RPE) while performing the Super Slow resistance training protocol …
Rpe "Drift" In Fit And Unfit Males Cycling In A Hot And Cool Environment, Robert Pritchett
Rpe "Drift" In Fit And Unfit Males Cycling In A Hot And Cool Environment, Robert Pritchett
Masters Theses & Specialist Projects
The potential influence of aerobic fitness on RPE estimations during extended exercise bouts is not well understood. The current study compared RPE-Overall, RPE-Legs and RPE-Chest between fit (n=7) and unfit (n=6) males. Subjects completed a graded cycling test and then, in a counterbalanced order, on two separate days cycled for 60min (intensity~90% of the Onset of Blood Lactate Accumulation (OBLA) - determined via gas exchange indices) at 30}1 degrees Wet Bulb Globe Temperature (WBGT) and 18}1 degrees WBGT. Heart rate (HR), rectal temperature (Tree) and overall and differentiated RPE estimations were collected every 5 minutes. Repeated measures analyses of variance …
Effects Of Two Backpack Weight Distributions On Perceptual And Physiological Measures During Walking, Katelyn Wells-Fahling
Effects Of Two Backpack Weight Distributions On Perceptual And Physiological Measures During Walking, Katelyn Wells-Fahling
Masters Theses & Specialist Projects
Backpack weight distribution may affect economy by conserving energy and thus potentially prolonging fatigue. Research has not however examined effects of backpack weight distribution on subjective measures of intensity and comfort. Heart rate (HR) and overall and differentiated Ratings of Perceived Exertion (RPE) were examined during simulated backpacking with differentially weighted backpacks. Volunteers (n=27) completed two simulated hiking trials on a treadmill. Trials consisted of 15 minutes walking at 0% grade followed by 15 minutes walking at 10% grade at 2.5 mph (males) or 2.0 mph (females). Subjects wore an internal frame backpack packed to contain 25% of their individual …
Vo2max Comparison Between Seated And Standing Ergometry, Andrew Bosak
Vo2max Comparison Between Seated And Standing Ergometry, Andrew Bosak
Masters Theses & Specialist Projects
Maximum oxygen consumption (VC^max) represents the highest rate at which oxygen can be consumed and utilized to produce energy sustaining aerobic activity. V02max is regarded as the gold standard for assessing aerobic fitness and is essential for prescribing appropriate exercise intensities. Therefore, accurate determination of VC>2max is vital. Usually, VC>2max is obtained when an individual reaches volitional exhaustion during a Graded Exercise Test (GXT). Previous studies show V02max during standing cycle ergometry protocols and treadmill protocols to be similar, while seated cycle ergometry V02tnax values are lower. Conversely, other studies show seated and standing cycle ergometry V02max to …
Regeneration Of Hair Cell Epithelia In The Chick And Salamander, Kenneth Detwiler
Regeneration Of Hair Cell Epithelia In The Chick And Salamander, Kenneth Detwiler
Masters Theses & Specialist Projects
The acousticolateralis sensory system is characterized by a specific receptor cell type called the sensory hair cell and is found in all vertebrates. There are two types of hair cell sensory epithelia based on location: those of the inner ear, such as the organs for hearing and balance, and the lateral line system located within the epidermis. In mammals, including humans, loss or damage of the hair cells of the auditorysystem results in permanent hearing loss. However, this is not the case with birds and amphibians. Amphibians, with a lateral line system, are capable of replacing lost or damaged hair …