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Articles 1 - 10 of 10
Full-Text Articles in Physiology
Flexible Phenotypes, Energetics, And Whole-Animal Performance Of Migratory Songbirds, Michael Griego
Flexible Phenotypes, Energetics, And Whole-Animal Performance Of Migratory Songbirds, Michael Griego
Doctoral Dissertations
Animal life has evolved innumerable strategies to adapt to a great range of environmental conditions present on earth. The physiology of free-living animals has thus been shaped to allow for maximal performance under challenging conditions and has given rise to traits that enable animals to overcome daunting ecological pressures. Few life history stages in the animal kingdom rival the intensity of annual avian migration: the extreme metabolic requirements of long-distance flight coupled with navigating vast and hostile ecological barriers results in enormously high mortality for young birds. It is therefore the main focus of this thesis to identify physiological traits …
Efficacy Of Six Weeks Stability Exercises On The Glenohumeral Joint Of Female Tennis Players With Scapular Dyskinesia, Sahar Modares Gorji, Omid Kazemi, Parisa Shahrzad, Paulo H. Marchetti
Efficacy Of Six Weeks Stability Exercises On The Glenohumeral Joint Of Female Tennis Players With Scapular Dyskinesia, Sahar Modares Gorji, Omid Kazemi, Parisa Shahrzad, Paulo H. Marchetti
International Journal of Exercise Science
International Journal of Exercise Science 15(3): 962-973, 2022. Background: Stabilizing exercises reduce pain intensity, improves shoulder position and scapular function, and provides an appropriate strategy for the improvement of scapular dyskinesia. The purpose of this study was to investigate the effect of six weeks of stability exercises (stretching-strengthening) on joint proprioception, strength, and range of motion of the glenohumeral joint in female tennis players with scapular dyskinesia. Methods: Thirty-six female elite tennis players with scapular dyskinesia in both experimental and control groups participated in this study. Goniometer, Isokinetic and Biodex devices were used to evaluate the range of motion, internal …
Acute Dose-Response Of Duration During The Plank Exercise On Muscle Thickness, Echo-Intensity, Peak Force, And Perception Of Effort In Recreationally-Trained Participants, Dani Al Sheikh Aleais, Keanna Sullivan, Paula Ferreira, Priscyla N. Marchetti, Paulo Henrique Marchetti
Acute Dose-Response Of Duration During The Plank Exercise On Muscle Thickness, Echo-Intensity, Peak Force, And Perception Of Effort In Recreationally-Trained Participants, Dani Al Sheikh Aleais, Keanna Sullivan, Paula Ferreira, Priscyla N. Marchetti, Paulo Henrique Marchetti
International Journal of Exercise Science
International Journal of Exercise Science 15(6): 676-685, 2022. The primary purpose of this study was to evaluate the acute effects of different durations of the isometric forearm plank exercise (IFPE) on peak force, echo intensity, muscle thickness, and perception of effort in recreationally-trained participants. Fifteen resistance-trained participants (23±3years, 76.4±6.5kg, 173.3±6.5cm) performed the IFPE with bodyweight in one of three durations in a randomized order: a). 1-min, b). 2-min, and c). 3-min. Muscle thickness (MT), echo intensity (EI), peak force (PF), and rating of perceived exertion (RPE) were measured pre-test and post-test. Two-way repeated-measures ANOVAs (2x3) were used to test differences …
The Effect Of Dietary Nitrate Supplementation On Physical And Cognitive Performance During Load Carriage In Military Cadets, Nicholas C. Bordonie
The Effect Of Dietary Nitrate Supplementation On Physical And Cognitive Performance During Load Carriage In Military Cadets, Nicholas C. Bordonie
Masters Theses, 2020-current
Purpose: The purpose of this study was to determine the effects of dietary nitrate supplementation on physical and cognitive performance during exercise conducted under heavy pack load in military cadets. Methods: Ten college-aged males (VO2max 56.2 ± 3.7 ml/kg/min) consumed 140mL/d of concentrated beetroot juice (BRJ; containing 12.8 mmol of dietary nitrate) or a placebo (PL; flavor, color, energy, and texture-matched with no dietary nitrate) for six days preceding an exercise trial. The trial consisted of 45 min of constant-load exercise on a treadmill at 4.83 km/h and 1.5% grade, followed immediately by a 1.6-km time-trial completed at maximal …
Anaerobic Contributions Are Influenced By Active Muscle Mass And The Applied Methodology In Well-Controlled Muscle Group, Gabriel Luches-Pereira, Carlos A. Kalva-Filho, Marcelo Papoti
Anaerobic Contributions Are Influenced By Active Muscle Mass And The Applied Methodology In Well-Controlled Muscle Group, Gabriel Luches-Pereira, Carlos A. Kalva-Filho, Marcelo Papoti
International Journal of Exercise Science
International Journal of Exercise Science 15(7): 599-615, 2022. The anaerobic metabolism determination is complex and the applied methodologies present limitations. Thus, the purpose of this study was to investigate the effects of different calculations (MAOD vs. AOD) on the anaerobic contribution using the dynamic knee extension. Twenty-four male were recruited [Mean (SD); age 27 (1) years, body mass 90 (3) kg, height 181 (2) cm]. This study was divided into two independent experiments (EXP1: one-legged; EXP2: two-legged). In both experiments, it was performed a graded exercise test to determine maximal power (MP-GXT); 2-4 submaximal efforts (VO …
Assessment Of Relationships Between External Load Metrics And Game Performance In Women’S Lacrosse, Libby Bynum, Ronald Snarr Jr., Bradley Myers 8931361, Jennifer A. Bunn
Assessment Of Relationships Between External Load Metrics And Game Performance In Women’S Lacrosse, Libby Bynum, Ronald Snarr Jr., Bradley Myers 8931361, Jennifer A. Bunn
International Journal of Exercise Science
International Journal of Exercise Science 15(6): 488-497, 2022. The purpose of this study was to analyse the relationship between external load metrics with game performance for Division I collegiate female lacrosse. Data were collected using microtechnology during 26 games with 13 athletes (attackers n = 5, midfielders n = 8). External load variables included: total distance (TD), distance rate (DR), high-intensity (HI) distance, speed, HI sprints, accelerations, decelerations, metabolic equivalent distance (MED), and sprints. For attackers, goals, points, shots, and shots on goal (SOG) had low, positive associations with TD (r = 0.32 to 0.42) and MED (r …
Acute Ingestion Of A Commercially Available Pre-Workout Supplement Improves Anaerobic Power Output And Reduces Muscular Fatigue, Sotiris Panayi, Andy Galbraith
Acute Ingestion Of A Commercially Available Pre-Workout Supplement Improves Anaerobic Power Output And Reduces Muscular Fatigue, Sotiris Panayi, Andy Galbraith
International Journal of Exercise Science
International Journal of Exercise Science 15(6): 455-472, 2022. The effect of a pre-workout supplement on anaerobic power output and muscular fatigue was examined. 18 participants took part in this double-blinded crossover study, reporting for testing on 3 occasions. Participants completed a 6x6 second repeated sprint test, with 20s recovery between sprints. Anaerobic power output was recorded as the highest power achieved during sprint test. Muscular fatigue was reported as a fatigue index across the six sprints ((maximum power – minimum power) ÷ total sprint time). During a baseline visit, participants consumed 250ml of water 30 minutes prior to testing, whilst …
Lifeguard Performance Skills: A Systematic Review, Paulo Santiago, Filipe Maia, Sandra Santiago, Daniel Duarte, Pedro Teques
Lifeguard Performance Skills: A Systematic Review, Paulo Santiago, Filipe Maia, Sandra Santiago, Daniel Duarte, Pedro Teques
International Journal of Aquatic Research and Education
Drowning is one of the leading causes of death worldwide and lifeguards’ action can be regarded as a significant contribution to change that reality. In this regard, the purpose of this systematic review was to identify factors associated with lifeguards’ performance. After extensive research on PsycArticles, PsicBooks, PsycInfo, SportDiscus, Web of Science, PubMed, Scopus and SportDiscus databases, containing the keywords “lifeguard” AND “performance”, “lifeguard” AND “skills” and “lifeguard” AND “drowning”, we obtained 429 research articles. After eliminating duplicates, excluding those that had no relevance to the study, and screening against set criteria, a total of five articles were fully reviewed. …
Muscle Daily Undulating Periodization For Strength And Body Composition: The Proposal Of A New Model, Douglas Leão Peixoto, Bruno Magalhães De Castro, Anderson Geremias Macedo, Christiano Bertoldo Urtado, Paulo Soares Lima, Richard Leite, James W. Navalta, Jonato Prestes
Muscle Daily Undulating Periodization For Strength And Body Composition: The Proposal Of A New Model, Douglas Leão Peixoto, Bruno Magalhães De Castro, Anderson Geremias Macedo, Christiano Bertoldo Urtado, Paulo Soares Lima, Richard Leite, James W. Navalta, Jonato Prestes
International Journal of Exercise Science
International Journal of Exercise Science 15(4): 206-220, 2022. The traditional linear periodization model is designed for modifications to be performed over several weeks, whereas alterations in the undulating model are applied on a more frequent basis. The study investigated a novel periodization scheme, the muscle daily undulating periodization model (mDUP). Thirty-seven men were randomly assigned into 2 groups: (a) a group that performed 12 weeks of daily undulating periodization with fix overload (DUP-F) resistance training (n = 19) and (b) a group that performed 12-weeks of muscle daily undulating periodization with variation overload (mDUP) (n = 18). Body …
Evaluation Of Air Consumption And Work Efficiency In Structural Firefighters, Emily Lynn Langford
Evaluation Of Air Consumption And Work Efficiency In Structural Firefighters, Emily Lynn Langford
Theses and Dissertations--Kinesiology and Health Promotion
INTRODUCTION: For safe and efficient fireground performance, firefighters (FF) must consume air supplied by the self-contained breathing apparatus (SCBA) efficiently while sustaining high work rates. Firefighter research and fire department physical ability assessments typically quantify performance solely on task completion time (i.e., work rate), failing to consider the critical element of air consumption efficiency, which subsequently impacts the SCBA’s functional work duration. PURPOSES: (Arm 1, Aim #1) To examine variability in air consumption (AC) between FF during standardized pace tasks; (Arm 1, Aim #2) To evaluate AC efficiency (ACE) against a recognized metabolic-work rate concept of economy; (Arm …