Kinesiology Commons^™

The Biomechanical Energetics Of Terrestrial Locomotion In California Sea Lions (Zalophus Californianus): Efficiency Of Quadrupedal Galloping, Sarah Kerr

West Chester University Master’s Theses

Pinnipedia, an order of semi-aquatic marine mammals, adapted a body design that allows for efficient aquatic locomotion but limited terrestrial locomotion. Phocids (true seals) have reduced forelimbs and are unable to bring their hindlimbs beneath them during terrestrial locomotion. Otariids, like the California sea lion (Zalophus californianus), have enlarged forelimbs and can bring their hindlimbs under the body to locomote quadrupedally on land. Due to these differences, phocids are expected to move on land with greater energetic costs compared to otariids. The mechanical costs of transport and power outputs of terrestrial locomotion were compared between the California sea …

Effects Of A Dual-Task Paradigm On Tandem Gait Performance, Courtney Angela Perry

Cal Poly Humboldt theses and projects

In concussion management, a variety of cognitive and motor control tests, like the tandem gait, have been used for assessing the presence of a concussion injury at the sideline and through recovery. More recently, research suggests that introducing a secondary cognitive retention task during tandem gait (i.e., dual task) may provide a better assessment of concussion. The purpose of this study was to determine if a tandem gait test paired with a 6-digit retention is a valid and reliable tool. Participants completed three trials of both the single-task (ST) and dual-task (DT) tandem gait tests, and their average (MEAN) and …

Grit And Mindset - Unrelated To Performance In A Motor Learning Task, Jacob Smith

Cal Poly Humboldt theses and projects

Objective Research has shown grit and mindset can be improved, but no known research has investigated the effect of learning a new skill on grit and growth mindset. While grit and mindset seem to predict success in education and success, it is also not clear if initial grit or mindset have an effect on motor skill acquisition. The purposes of this research are to investigate if grit and growth mindset are predictors of learning a new skill and if learning a new skill leads to improvement in grit and growth mindset. Methods 14 students enrolled in a motor learning course …

Wingate Muscular Power Test Reference Values For Active Healthy Adults Ages 19-29: Normative Data And Differences Between Sex, Levi Basist

Cal Poly Humboldt theses and projects

The Wingate Muscular Power Test (WMPT) has existed for several decades and to this day is considered the gold standard for evaluating an individual’s muscular power. However, the utility of this test is predicated on having accurate and relevant normative data with which to compare individual results. At present, the existing literature on this subject is either several decades old and/or inclusive of only specific subject groups (i.e. men only or sport-specific athletes). This study presents WMPT normative values for active healthy adults ages 19-29, separated by sex. The sample consisted of 330 active healthy volunteers (186 men and 144 …

Les Lésions Professionnelles De La Coiffe Des Rotateurs De L'Épaule : Optimiser La Prise En Charge Des Travailleurs Et Favoriser Le Retour Au Travail, François Desmeules, Jean-Sébastien Roy, Joseph-Omer Dyer, Pierre Frémont, Clermont Dionne, Joy C. Macdermid, Michel Tousignant, Annie Rochette

Rapports de recherche scientifique

Les atteintes musculosquelettiques de l’épaule sont fréquentes chez les travailleurs. En plus d’affecter leur qualité de vie, elles entraînent une augmentation de l’absentéisme et une diminution de la productivité, et peuvent conduire à une retraite anticipée. Pour l’année 2017, la province de Québec a enregistré 2,1 milliards de dollars en prestations en lien avec des lésions professionnelles. Environ 8 % de ces réclamations étaient dues à une lésion touchant l’articulation de l’épaule (CNESST, 2018).

Les lésions de la coiffe des rotateurs (CR) sont les affections les plus rencontrées chez les travailleurs présentant une atteinte à l’épaule. Présentement, les cliniciens ne …

Les Lésions Professionnelles De La Coiffe Des Rotateurs De L'Épaule : Optimiser La Prise En Charge Des Travailleurs Et Favoriser Le Retour Au Travail : Matériel Supplémentaire, François Desmeules, Jean-Sébastien Roy, Joseph-Omer Dyer, Pierre Frémont, Clermont Dionne, Joy C. Macdermid, Michel Tousignant, Annie Rochette

Rapports de recherche scientifique

Voir également :

• Les lésions professionnelles de la coiffe des rotateurs de l'épaule : optimiser la prise en charge et en favoriser le retour au travail, RA-1119-fr

• Les lésions professionnelles de la coiffe des rotateurs de l’épaule : optimiser la prise charge et en favoriser le retour au travail : guide de pratique clinique, RG-1119-fr

Développement, Validation Et Application D’Une Méthode Quantitative Pour Évaluer Les Déplacements Des Pieds Des Manutentionnaires, André Plamondon, Antoine Muller, Xavier Robert-Lachaîne, Jasmin Vallée-Marcotte, Denys Denis, Christian Larue, Hakim Mecheri, Philippe Corbeil

Rapports de recherche scientifique

Les troubles musculosquelettiques lors d’activités de manutention manuelle (MM) sont encore très présents dans nos milieux de travail. Les facteurs de risque biomécanique les plus souvent associés aux douleurs au dos incluent la manutention manuelle, les répétitions excessives, les torsions du tronc et les levers de charges lourdes. Plusieurs déterminants d’une tâche de MM ont été étudiés pour déterminer leur importance sur l'exposition physique des travailleurs. Par exemple, la hauteur de la charge, la distance initiale de la charge par rapport au corps, la masse soulevée et la vitesse du soulèvement sont tous des déterminants liés à la …

Confort Thermique Et Mobilité Des Policiers Motards Lors Du Port Du Gilet Pare-Balles : Une Analyse Ergonomique, Steve Vezeau, Alain S. Comtois, Victoria Budico

Rapports de recherche scientifique

Plusieurs études démontrent une diminution importante des risques de décès chez les agents de police qui portent un gilet pare-balles (GPB). Cependant, certains patrouilleurs demeurent réticents à le revêtir à cause des inconforts qu’il engendre sur les plans thermiques et de la mobilité; ceux-ci représentent 8 % de l’ensemble des agents de police et 47 % des agents motards, ce qui accroît les risques pour leur sécurité. Les agents des unités motocyclistes seraient donc parmi les plus exposés, notamment en raison de conditions particulières telles que le travail à l’extérieur, la proximité d’une source de chaleur (moteur), le port de …

The Relationship Between Relative Muscular Strength And Joint Mobility In Firefighters, Samuel C. Nozicka

Masters Theses

Firefighters job requirements consist of running upstairs, climbing ladders, ceiling breach and pull, carrying equipment, forcible entry, dragging hoses, raising ladders, and rescue of patrons all while wearing heavy protective equipment that limits their mobility (Park et al., 2015). The purpose of this study was to examine the relationship between relative strength and mobility within the population of firefighters. The subjects were volunteers consisting of twelve male firefighter ranging in age from 25-52 with the mean age of 37.7 ± 7.7 years. Leighton Flexometer was used to measure joint range of motion (ROM) in different active movement patterns (Leighton, 1966). …

Examining The Impact Of High Sodium Intake On Blood Flow Regulation, Exercise Tolerance, And Oxidative Stress In Salt Resistant Individuals, Kevin P. Decker

Theses and Dissertations

Excessive dietary sodium consumption increases the risk for high blood pressure (BP), and therefore recommended for dietary sodium intake to be ≤ 2,300 mg/day. Recommendations are based on salt-sensitive individuals who report elevated BP with high sodium (HS) intake, but many individuals are salt-resistant (SR) who experience little to no change in BP with HS intake. Currently, less is known about the adverse cardiovascular effects of HS intake independent of BP. A potential source of impaired blood vessel function (micro- and macro-) from HS intake is oxidative stress, or the imbalance between antioxidant defense and oxidants, in favor of oxidants. …

Application Of Proprioceptive Neuromuscular Facilitation (Pnf) To Artistic Gymnastics, Karli Sassone

Honors Capstones

No abstract provided.

Strength And Body Composition Changes Of Junior Hockey Players During The Competitive Season, Dan Marquette

Electronic Theses and Dissertations

Purpose: This study investigated the body composition and strength changes of NAHL junior hockey players across a competitive season. It was hypothesized that players would lose lean body mass loss from pre-season to end-season. The secondary hypothesis was that players would lose strength in relation to the anticipated loss in lean body mass. Methods: Outcome measurements were taken at pre-season, mid-season, and endseason points of a competitive NAHL junior hockey season (n = 15, age = 19.1 years). Body composition was measured using air plethysmography (BodPod) and strength was measured using isokinetic strength testing (Biodex). Results: No significant changes in …

Examining Eating Attitudes And Behaviors In Collegiate Athletes, The Association Between Orthorexia Nervosa And Eating Disorders, Nancy A. Uriegas, Zachary K. Winkelmann, Kelly Pritchett, Toni M. Torres-Mcgehee

Faculty Publications

Orthorexia nervosa (Orthorexia) is an eating attitude and behavior associated with a fixation on healthy eating, while eating disorders (EDs) are clinically diagnosed psychiatric disorders associated with marked disturbances in eating that may cause impairment to psychosocial and physical health. The purpose of this study was to examine risk for Orthorexia and EDs in student-athletes across sex and sport type and determine the association between the two. Student-athletes ( = 1,090; age: 19.6 ± 1.4 years; females = 756; males = 334) completed a survey including demographics, the ORTO-15 test (values), the Eating Attitudes Test-26 (EAT-26; >20 score), and additional …

Exertional Heat Illness Risk Factors And Physiological Responses Of Youth Football Players, Susan W. Yeargin, John J. Dickinson, Dawn M. Emerson, Jessica Koller, Toni M. Torres-Mcgehee, Zachary Y. Kerr

Faculty Publications

OBJECTIVE: To determine which intrinsic and extrinsic exertional heat illness (EHI) risk factors exist in youth American football players and observe perceptual and physiological responses of players during events (games and practices). METHODS: Cross-sectional cohort study observing 63 youth football players, varying in position. Independent variables were league (weight-restricted (WR, n = 27) and age-restricted (AR, n = 36)) and event type. Dependent variables were anthropometrics, work-to-rest ratio, and wet bulb globe temperature. Descriptive variables included preparticipation examination and uniform configuration. A subset of 16 players participated in physiological variables (heart rate and gastrointestinal temperature). Data collection occurred on 7 …

Psychometric Evaluation Of Memory And Concentration Sections In The Standardized Assessment Of Concussion, Seungho Ryu

Electronic Theses and Dissertations

The purpose of this study is to evaluate validate the memory and concentration sections of the Standardized Assessment of Concussion (SAC) from the SCAT5. Two studies were conducted. The first study examined item difficulty and discrimination using 10 new word lists of 3 versions in the immediate memory section using item analysis based on classical test theory and to equate scores earned on different versions of 10 word lists using test equating methods. The second evaluated the validity of digits backwards in the concentration section, and evaluated current and new scoring methods for the digit backwards. Two hundred young adults …

Muscle Blood Flow Is Independent Of Conduit Artery Diameter Following Prior Vasodilation In Males, Timothy R. Rotarius, Jakob D. Lauver, John R. Thistlethwaite, Barry W. Scheuermann

Kinesiology

At the onset of exercise in humans, muscle blood flow (MBF) increases to a new steady-state that closely matches the metabolic demand of exercise. This increase has been attributed to “contraction-induced vasodilation,” comprised of the skeletal muscle pump and rapid vasodilatory mechanisms. While most research in this area has focused on forearm blood flow (FBF) and vascular conductance, it is possible that separating FBF into diameter and blood velocity can provide more useful information on MBF regulation downstream of the conduit artery. Therefore, we attempted to dissociate the matching of oxygen delivery and oxygen demand by administering glyceryl tri-nitrate (GTN) …

Influence Of Body Composition, Velocity Profiles, And Sex-Related Differences On Army Combat Fitness Test Performance, David Boffey

Electronic Theses and Dissertations, 2020-2023

The Army Combat Fitness Test (ACFT) will become the United States Army's mandatory physical fitness test in March of 2022. The purpose of this study was to determine the relationship between ACFT performance and both body composition and velocity profiles, and to determine sex differences for these variables. Data was collected in November 2020 (Fall) and March 2021 (Spring) from male (n = 55) and female (n = 17) Army Reserve Officers' Training Corps (ROTC) cadets. Body composition was assessed with a bioelectrical impedance spectroscopy (BIS) device, and cadets completed a squat jump (SJ) force-velocity profile (FVP) and a hex …

Comparison Of The Times To Exhaustion, Physiological, Perceptual, And Neuromusuclar Responses During Constant Heart Rate, Constant Vo2, And Constant Power Exercise, Pasquale Jiovanni Succi

Theses and Dissertations--Kinesiology and Health Promotion

The purposes of this study were to: 1) Determine if there are differences in the sustainability of exercise when anchored at critical heart rate (CHR), the VO₂ associated with CHR (VO₂CHR), or the power output associated with CHR (PCHR); 2) examine the patterns of responses in power output, metabolic (heart rate [HR], VO₂, respiration rate [RR]), neuromuscular (electromyographic [EMG] amplitude [AMP], mean power frequency [MPF], mechanomyographic [MMG] AMP and MPF, perceptual (rating of perceived exertion [RPE]), and muscle oxygenation responses (%SmO₂) during exercise anchored by HR, VO₂, and power output; and …

Examination Of Sex- And Limb-Specific Fatigue During Unilateral, Isometric Forearm Exercise, Caleb Christian Voskuil

Theses and Dissertations--Kinesiology and Health Promotion

The purpose of this study was to examine the effects of unilateral, isometric handgrip holds to failure for the dominant (Dm) and non-dominant (NDm) limb on ipsilateral ([IPS] exercised side) and contralateral ([CON] non-exercised side) performance fatigability. Twenty individuals participated in this study (Men [n =10]; Women [n = 10; Composite Demographics: Age: 22.2 years; Height: 174.4 cm; Body Mass: 75.0 kg) and completed three visits. Two, 6 s maximal voluntary isometric contractions (MVICs) for the Dm and NDm limb were performed during visit 1, followed by a familiarization of the fatigue test. Visits 2 and 3 included an isometric, …

Quadriceps Recruitment And Twitch Properties In Lean And Obese Women Before And After Fatiguing Exercise, Rebekah Seay Carpenter

Theses and Dissertations--Kinesiology and Health Promotion

Skeletal muscle strength, specifically that of the anti-gravitational muscles such as the quadriceps, is essential for performing dynamic tasks including walking, navigating stairs, and transitioning between sitting and standing. Obesity has been shown to negatively impact musculoskeletal function and decrease quadriceps strength relative to body weight. Additionally, obesity has been linked with higher rates of fatigue and lower strength outcomes following a test of muscular endurance of the quadriceps. Since obesity lowers relative strength, it is likely that quadriceps muscle weakness contributes to reduced physical function of dynamic tasks. However, to date, the precise mechanism for obesity-induced muscle weakness has …