Open Access. Powered by Scholars. Published by Universities.®

Kinesiology Commons™

Open Access. Powered by Scholars. Published by Universities.®

Exercise Science

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1321 - 1350 of 3876

Full-Text Articles in Kinesiology

Theoretical Discussions And Pathways Of Including Physical Education In The College Entrance Examination, Xiaoqiang Qian Feb 2023

Theoretical Discussions And Pathways Of Including Physical Education In The College Entrance Examination, Xiaoqiang Qian

International Journal of Physical Activity and Health

Under the background of the integration of sports and education, the study explored the feasibility and path of including physical education in the College Entrance Examination. Comprehensive literature and expert interviews and other methods were used to analyze the needs of including physical education in the College Entrance Examination. The specific theories are as follows: (a) “including physical education in the College Entrance Examination” can be an important entry point to promote the integration of sports and education and plays a key role of the test baton; (b) Policies that satisfy most stakeholders and conform to public interests at the …


Analysis And Prospect Of Research Progress Of Health Education Curriculum In China, Xue Wan, Haohui Liu, Zhihua Yin Feb 2023

Analysis And Prospect Of Research Progress Of Health Education Curriculum In China, Xue Wan, Haohui Liu, Zhihua Yin

International Journal of Physical Activity and Health

The purpose of this study was twofold: 1) review research results of health education in China and help readers gain a better understanding of the current profiles of research in health education curriculum and 2) provide a theoretical basis for future research in health education curriculum. Using key words such as health education curriculum on Chinese National Knowledge Infrastructure (CNKI), we searched and finally obtained 7287 articles. By using the visual analysis function of CNKI, we also analyzed the overall trend of research in Health Education Curriculum. Review of the articles found that the overall trend of research in health …


Exercise Prescription In Patient With Different Complications Of Leukemia: Recommendations For Clinical Practice, Yanzhong Chen Feb 2023

Exercise Prescription In Patient With Different Complications Of Leukemia: Recommendations For Clinical Practice, Yanzhong Chen

International Journal of Physical Activity and Health

Common treatment of leukemia will have side effects on nerve function, affecting the patient's physical function, which makes patients often accompanied by infection, bone and joint pain, fatigue and other symptoms. Exercise can improve the level of body function, enable patients to tolerate stronger chemotherapy during treatment, help improve the survival rate and recovery chances of patients, and has been used as an effective means to promote recovery. Recommendations for leukemia and exercise have been primarily based on the results of existing relevant studies. To provide more targeted recommendations for the leukemia, we gathered evidence for the efficacy of exercise …


Construction Of Evaluation System Of Effectiveness Of Supply Based On Spatial Perspective, Tienan Song, Haikuo Yu Feb 2023

Construction Of Evaluation System Of Effectiveness Of Supply Based On Spatial Perspective, Tienan Song, Haikuo Yu

International Journal of Physical Activity and Health

The requirement of "building a higher-level National Fitness Public Service system centering on meeting the needs of the people" by the Chinese State Council is to guarantee and satisfy the demand of public through effective supply. However, despite of the clear purpose of the task, there is still a gap between the actual and the expected status of National Fitness Public Service supply. Based on the characteristics of the perspective of space, the purpose of this study is to examine how to measure and achieve the effectiveness of National Fitness Public Service’s supply. By reviewing the literature, relevant results of …


Effect Of Physical Exercise On Life Satisfaction Of Chinese Primary Students: The Chain Mediating Role Of Self-Confidence And Resilience, Huan-Yu Li, Bo Shen, Jun Yan, Ai-Guo Chen, Ting Zhang Feb 2023

Effect Of Physical Exercise On Life Satisfaction Of Chinese Primary Students: The Chain Mediating Role Of Self-Confidence And Resilience, Huan-Yu Li, Bo Shen, Jun Yan, Ai-Guo Chen, Ting Zhang

International Journal of Physical Activity and Health

Life satisfaction is an overall cognitive evaluation of an individual's living condition for the most of time or over a certain period of time according to the standard of one’s own choice. It is an important psychological variable in the developmental stage of children and adolescents. Some studies had shown that life satisfaction was closely related to children's and adolescents' mental health levels, including their emotional and behavioral conditions. However, the Blue Book for Children: China Children's Development Report (2020) published by China Children's Center stated that Chinese students did not fare well in terms of life satisfaction. Previous studies …


Physical Activity And Exercise For Hot Flashes: Trigger Or Treatment?, Sarah Witkowski, Rose Evard, Jacquelyn J. Rickson, Quinn White, Lynnette Leidy Sievert Feb 2023

Physical Activity And Exercise For Hot Flashes: Trigger Or Treatment?, Sarah Witkowski, Rose Evard, Jacquelyn J. Rickson, Quinn White, Lynnette Leidy Sievert

Exercise and Sport Studies: Faculty Publications

Importance and Objective: Hot flashes (HFs) are a prevalent feature of menopause. Hot flashes can be bothersome and affect quality of life. However, HFs have also been associated with the risk for cardiovascular disease. Therefore, providing current evidence on the effect of therapies to reduce HFs can help patients and providers with decision making. This review provides details on the scientific evidence to date related to the effect of physical activity (PA) and exercise to alter the HF experience in women

Methods: The PubMed database was searched between June 2020 and June 2022 for currently available evidence regarding the relation …


A Molecular Signature Defining Exercise Adaptation With Ageing And In Vivo Partial Reprogramming In Skeletal Muscle, Ronald G. Jones Iii, Andrea Dimet-Wiley, Amin Haghani, Francielly Morena Da Silva, Camille R. Brightwell, Seongkyun Lim, Sabin Khadgi, Yuan Wen, Corey M. Dungan, Robert T. Brooke, Nicholas P. Greene, Charlotte A. Peterson, John J. Mccarthy, Steve Horvath, Stanley J. Watowich, Christopher S. Fry, Kevin A. Murach Feb 2023

A Molecular Signature Defining Exercise Adaptation With Ageing And In Vivo Partial Reprogramming In Skeletal Muscle, Ronald G. Jones Iii, Andrea Dimet-Wiley, Amin Haghani, Francielly Morena Da Silva, Camille R. Brightwell, Seongkyun Lim, Sabin Khadgi, Yuan Wen, Corey M. Dungan, Robert T. Brooke, Nicholas P. Greene, Charlotte A. Peterson, John J. Mccarthy, Steve Horvath, Stanley J. Watowich, Christopher S. Fry, Kevin A. Murach

Health, Human Performance and Recreation Faculty Publications and Presentations

Exercise promotes functional improvements in aged tissues, but the extent to which it simulates partial molecular reprogramming is unknown. Using transcriptome profiling from (1) a skeletal muscle-specific in vivo Oct3/4, Klf4, Sox2 and Myc (OKSM) reprogramming-factor expression murine model; (2) an in vivo inducible muscle-specific Myc induction murine model; (3) a translatable high-volume hypertrophic exercise training approach in aged mice; and (4) human exercise muscle biopsies, we collectively defined exercise-induced genes that are common to partial reprogramming. Late-life exercise training lowered murine DNA methylation age according to several contemporary muscle-specific clocks. A comparison of the murine soleus transcriptome …


Effects Of A Race Timer On The 3-Minute All-Out Test For Critical Power, Paul Mandell, Boe Burrus, Taylor Bloedon Jan 2023

Effects Of A Race Timer On The 3-Minute All-Out Test For Critical Power, Paul Mandell, Boe Burrus, Taylor Bloedon

Topics in Exercise Science and Kinesiology

Topics in Exercise Science and Kinesiology Volume 4: Issue 1, Article 2, 2023. The 3-min all-out cycling test (3MT) elicits valuable fitness metrics including V̇O2peak, HRmax, Critical Power (CP), and Work Above End Power (WEP; equivalent to work prime; W’). Twelve (n = 12) healthy active males were recruited to participate in the current study on the effects of the implementation of a race timer on the 3MT. Participants completed a V̇O2peak test and one 3MT familiarization trial before completing one standard 3MT and one 3MT with the presence of a countdown race timer in …


The Effect Of Spinal Muscle Fatigue And Psychosocial Factors On Pressure-Pain Threshold In Healthy Adults, Susan Mais, Jo Armour Smith Jan 2023

The Effect Of Spinal Muscle Fatigue And Psychosocial Factors On Pressure-Pain Threshold In Healthy Adults, Susan Mais, Jo Armour Smith

Physical Therapy Faculty Articles and Research

Objective. Pain sensitivity decreases following isometric exercise. It is not clear whether this exercise-induced hypoalgesia (EIH) occurs to the same extent in men and women. It is also unclear if the effect is systemic or local to the exercised musculature. The aim of our study was to investigate whether fatiguing isometric exercise of the spinal and hip extensors would result in increased pressure pain threshold (PPT) at sites local to and remote from the exercised muscles in healthy men and women and whether there is a relationship between central sensitization, psychosocial factors, and PPT. Subjects. 35 healthy adults …


The Effects Of Acute Rauwolscine (Α-Yohimbine) Ingestion On Repeated Wingate Sprint Performance In Healthy Males, Megan E. Barnes, Tyler Williams, Camryn R. Cowan, Brenden A. Torres, W. Tanner Clark, Rebecca R. Rogers, Luke R. Harms, Christopher G. Ballmann Jan 2023

The Effects Of Acute Rauwolscine (Α-Yohimbine) Ingestion On Repeated Wingate Sprint Performance In Healthy Males, Megan E. Barnes, Tyler Williams, Camryn R. Cowan, Brenden A. Torres, W. Tanner Clark, Rebecca R. Rogers, Luke R. Harms, Christopher G. Ballmann

Topics in Exercise Science and Kinesiology

Topics in Exercise Science and Kinesiology Volume 4: Issue 1, Article 1, 2023. Background: Rauwolscine (RW), also known as α-Yohimbine, is an α-2-adrenergic receptor antagonist which possesses sympathomimetic properties. RW is commercially sold in pre-workout and energy supplements. However, the ergogenic potential of RW has not been determined. The purpose of this study was to investigate the effects of acute RW supplementation on repeated sprint performance. Methods: Healthy male participants (n=12) completed 3 × 15-second Wingate anaerobic tests (WAnT) separated by 2 minutes of active recovery. Blood lactate (La) was collected before exercise (Pre) and immediately following exercise …


A Swimming Program For Children With Autism Spectrum Disorders: Assessing Critical Parameters From Caregivers’ Perspectives, Abir K. Bekhet, Norah Johnson, Tana Karenke, Amy Van Hecke Jan 2023

A Swimming Program For Children With Autism Spectrum Disorders: Assessing Critical Parameters From Caregivers’ Perspectives, Abir K. Bekhet, Norah Johnson, Tana Karenke, Amy Van Hecke

International Journal of Aquatic Research and Education

One in 54 individuals is diagnosed with autism spectrum disorders (ASD). Swimming can impact the physical and mental well-being of persons with ASD, which in turn may improve their caregivers’ well-being. The purpose of this qualitative evaluation study is to assess the necessity, acceptability, feasibility, fidelity, and beginning effectiveness of a 12-session swimming training program (STP) at an indoor university pool designed to teach persons with ASD how to swim, and to teach caregivers precautions for safety around water. Participants included 7 boys, and 3 girls with ASD [mean age 7.05 years (SD 1.17)] and their caregivers. Results indicated that …


An Examination Of Depression, Anxiety, And Self-Esteem In Collegiate Student-Athletes, Samantha R. Weber, Zachary K. Winkelmann, Eva V. Monsma, Shawn M. Arent, Toni M. Torres-Mcgehee Jan 2023

An Examination Of Depression, Anxiety, And Self-Esteem In Collegiate Student-Athletes, Samantha R. Weber, Zachary K. Winkelmann, Eva V. Monsma, Shawn M. Arent, Toni M. Torres-Mcgehee

Faculty Publications

Mental health research exists for student-athletes in the areas of depression, anxiety, and self-esteem prevalence. However, updated prevalence rates and assessment of risks across sports, academic status, and genders are needed. Filling the gaps in research assists in the creation of patient-centered mental health screening and interventions designed for student-athletes. Therefore, the purpose is to examine the prevalence of depression, anxiety, and self-esteem in collegiate student-athletes and differences between sex, academic status, and sport type, and identify associations for risks. Using a cross-sectional design, collegiate student-athletes were surveyed to assess for risks of depression, anxiety, and self-esteem. With the use …


The Effects Of Short-Term Removal Of Exercise On Flow Mediated Dilation In Older Adults: Preliminary Data, Joel E. Harden, Leryn Reynolds Ph.D. Jan 2023

The Effects Of Short-Term Removal Of Exercise On Flow Mediated Dilation In Older Adults: Preliminary Data, Joel E. Harden, Leryn Reynolds Ph.D.

College of Education & Professional Studies (Darden) Posters

Endothelial function is negatively associated with decreased risk of cardiovascular disease. Previous studies demonstrate that endothelial function is improved through exercise, and that young, active adults experience impaired endothelial function following short-term physical inactivity interventions. Whether this occurs in older, active adults who may be more prone to bouts of inactivity is unknown. This study determined if endothelial function, as measured by flow-mediated dilation (FMD), was impaired in active, older adults following removal of exercise for 5 days compared to active, young adults. To examine this, popliteal and brachial artery FMD were measured at baseline and during days 3 and …


Reliability And Validity Of A Flume-Based Maximal Oxygen Uptake Swimming Test, Elizabeth F. Nagle, Takashi Nagai, Anne Beethe, Mita Lovalekar, Meghan S. Tuite, Meaghan E. Beckner, Jacquelyn N. Zera, Mary E. Sanders, Chris Connaboy, John P. Abt, Kim Beals, Scott M. Lephart, Robert J. Robertson, Bradley C. Nindl Jan 2023

Reliability And Validity Of A Flume-Based Maximal Oxygen Uptake Swimming Test, Elizabeth F. Nagle, Takashi Nagai, Anne Beethe, Mita Lovalekar, Meghan S. Tuite, Meaghan E. Beckner, Jacquelyn N. Zera, Mary E. Sanders, Chris Connaboy, John P. Abt, Kim Beals, Scott M. Lephart, Robert J. Robertson, Bradley C. Nindl

2023 Faculty Bibliography

A mode-specific swimming protocol to assess maximal aerobic uptake (VO2maxsw) is vital to accurately evaluate swimming performance. A need exists for reliable and valid swimming protocols that assess VO2maxsw in a flume environment. The purpose was to assess: (a) reliability and (b) “performance” validity of a VO2maxsw flume protocol using the 457-m freestyle pool performance swim (PS) test as the criterion. Nineteen males (n = 9) and females (n = 10) (age, 28.5 ± 8.3 years.; height, 174.7 ± 8.2 cm; mass, 72.9 ± 12.5 kg; %body fat, 21.4 ± 5.9) performed two flume VO2maxsw tests (VO2maxswA and VO2maxswB) and …


Possible Relationship Between Omega-3 Fatty Acid Supplementation And Recovery From Resistance Training, Saagar R. Patel Jan 2023

Possible Relationship Between Omega-3 Fatty Acid Supplementation And Recovery From Resistance Training, Saagar R. Patel

Honors Undergraduate Theses

The purpose of this thesis is to investigate the relationship between Omega-3 Fatty Acid supplementation and recovery from resistance training. Omega-3 Fatty Acids are a type of polyunsaturated fatty acid that is commonly found in marine sources. Omega-3 Fatty Acids are widely known for offering cardiovascular health benefits and for their anti-inflammatory properties, but their role in resistance training recovery is a relatively novel area of research. This review was conducted by qualitatively analyzing a collection of studies that have been published on the relationship between Omega-3 Fatty Acid supplementation and recovery from resistance training in either resistance-trained or untrained …


Analyzing The Effectiveness Of Kinesio-Taping In Golf-Induced Chronic Low Back Pain Management, Yushan Zhang Jan 2023

Analyzing The Effectiveness Of Kinesio-Taping In Golf-Induced Chronic Low Back Pain Management, Yushan Zhang

Honors Undergraduate Theses

The purpose of this study was to investigate the effectiveness of Kinesio-Taping (KT) in golf-induced chronic low-back pain management. The golfing population continues to grow each year, and the risks of golf-induced chronic low back pain (CLBP) remain high. The Kinesio-taping technique is a non-invasive treatment intervention utilized in sports injury rehabilitation and prevention. Due to the lack of research on KT in golf-related injuries, this study addresses the injury mechanism of golf-induced CLBP and the proposed physiological mechanism and therapeutic effects on the musculoskeletal system of KT. This study is a comprehensive review of the golf swing, prevalence and …


Exercise Intensity And Fractionated Response Time, Danielle R. Martineau, Ronald V. Croce, Wayne Smith Jan 2023

Exercise Intensity And Fractionated Response Time, Danielle R. Martineau, Ronald V. Croce, Wayne Smith

Data Catalog

We investigated the role of three intensities of aerobic exercise (Low Intensity [LI], Moderate Intensity [MI], High Intensity [HI]) on information processing and cognition (IPC) by analyzing response time (RPT) and its fractionated components (1) reaction time (RT, interval between stimulus onset and muscle activation, and (2) movement time (MT, time interval between muscle activation and completion of the required motor response). Twenty-seven participants (16, male; 11, female) between the ages of 18-25 (mean age = 21.9 years) took part in 1-choice, 5-choice, and dual-task (DT, counting backwards by 3) conditions prior to and 1-min and 20-min postexercise. Based on …


Validity And Reliability Of A Computer Vision System To Determine Bar Displacement And Velocity, Christopher Taber, Emma Patterson, Jui Shah, Padraig Francis, Justin C. Wager Jan 2023

Validity And Reliability Of A Computer Vision System To Determine Bar Displacement And Velocity, Christopher Taber, Emma Patterson, Jui Shah, Padraig Francis, Justin C. Wager

Exercise Science Faculty Publications

This study examined the validity and reliability of a video-based smartphone application (VBA) to measure displacement and velocity in the barbell bench press, back squat, and deadlift. Nine resistance-trained subjects (three females; six males; age: 24.2±4.2 years; height 175.8±8.1 cm; body mass 87.2±18.2kg) completed two test-retest sessions for the barbell bench press, back squat, and deadlift one week apart. Eight repetitions were completed for the bench press, back squat, and deadlift with a load of 40kg and completed at fast and slow velocities. Bar displacement and average velocity were measured simultaneously using 3-D motion capture (MC) and a VBA. The …


The Effect Of Weekly Training Load On Match Result In American Professional Soccer, Cameron M. Horsfall Jan 2023

The Effect Of Weekly Training Load On Match Result In American Professional Soccer, Cameron M. Horsfall

College of Graduate Studies: Theses & Dissertations

BACKGROUND: During a professional soccer season, training load (TL) will fluctuate due to the need to prepare for the next competition. Based on the technical staff’s daily and weekly evaluation, TL will be adjusted as they prepare the team and maximize individual performance and achieve a favorable result. Therefore, the programming of each match week (MW) TL may promote a favorable result. PURPOSE: The purpose of this study was to examine variation in daily GPS-derived TL variables based on match result using the Match Day Minus (MD-) system. This study provides descriptive TL data yet to be reported in …


Short-Term Removal Of Exercise Impairs Glycemic Control In Older Adults: A Randomized Trial, Leryn J. Reynolds, Troy M. Williams, Joel E. Harden, Hannah M. Twiddy, Monica L. Kearney Jan 2023

Short-Term Removal Of Exercise Impairs Glycemic Control In Older Adults: A Randomized Trial, Leryn J. Reynolds, Troy M. Williams, Joel E. Harden, Hannah M. Twiddy, Monica L. Kearney

Human Movement Studies & Special Education Faculty Publications

Postprandial glycemia (PPG) predicts cardiovascular disease, and short-term physical inactivity increases PPG in young, active adults. Whether this occurs in older, active adults who may be more prone to bouts of inactivity is unknown. This study determined if postprandial interstitial glucose (PPIG) was impaired in active older adults following the removal of exercise for 3 days (NOEX) compared to active young adults. In this randomized, crossover study, 11 older (69.1 ± 1.9 years) and 9 young (32.8 ± 1.8 years) habitually active (≥90 min/week of exercise) adults completed 3-days of NOEX and 3-days of normal habitual exercise (EX), separated by …


International Society Of Sports Nutrition Position Stand: Nutritional Considerations For Single-Stage Ultra-Marathon Training And Racing, Stacy T. Sims, Chad M. Kerksick, Abbie E. Smith-Ryan, Xanne A.K. Janse De Jonge, Katie R. Hirsch, Shawn M. Arent Ph.D., Cscs*D, Fissn, Facsm, Fnak, Susan Joyce Hewlings, Susan M. Kleiner, Erik Bustillo, Jaime L. Tartar, Valerie G. Starratt, Richard B. Kreider, Casey Greenwalt, Liliana I. Rentería, Michael J. Ormsbee, Trisha A. Vandusseldorp, Bill I. Campbell, Douglas S. Kalman, Jose Antonio Jan 2023

International Society Of Sports Nutrition Position Stand: Nutritional Considerations For Single-Stage Ultra-Marathon Training And Racing, Stacy T. Sims, Chad M. Kerksick, Abbie E. Smith-Ryan, Xanne A.K. Janse De Jonge, Katie R. Hirsch, Shawn M. Arent Ph.D., Cscs*D, Fissn, Facsm, Fnak, Susan Joyce Hewlings, Susan M. Kleiner, Erik Bustillo, Jaime L. Tartar, Valerie G. Starratt, Richard B. Kreider, Casey Greenwalt, Liliana I. Rentería, Michael J. Ormsbee, Trisha A. Vandusseldorp, Bill I. Campbell, Douglas S. Kalman, Jose Antonio

Faculty Publications

Based on a comprehensive review and critical analysis of the literature regarding the nutritional concerns of female athletes, conducted by experts in the field and selected members of the International Society of Sports Nutrition (ISSN), the following conclusions represent the official Position of the Society: 1. Female athletes have unique and unpredictable hormone profiles, which influence their physiology and nutritional needs across their lifespan. To understand how perturbations in these hormones affect the individual, we recommend that female athletes of reproductive age should track their hormonal status (natural, hormone driven) against training and recovery to determine their individual patterns and …


Exploring Anterior Cruciate Ligament Tears And Athletic Identity As Predictors Of Disordered Eating Behaviors In Female Collegiate Soccer Players, Niondina M. Nyström Jan 2023

Exploring Anterior Cruciate Ligament Tears And Athletic Identity As Predictors Of Disordered Eating Behaviors In Female Collegiate Soccer Players, Niondina M. Nyström

Masters Theses

Research has consistently established the relationship between injury occurrence and subsequent mental health concerns within the athletic population (Brown et al., 2014; NCAA, 2021). Specifically, negative mental health outcomes such as anxiety, depression, and social isolation have followed the occurrence of an anterior cruciate ligament (ACL) tear (McGinley et al., 2022; Töyrä & Bergström, 2017). Similarly, because of high levels of athletic identity (AI), the inability to participate in a sport due to injury has been associated with disordered eating (DE) (Gusfa et al., 2022). Despite this, no studies have examined disordered eating and the role of athletic identity after …


Consequences Of Shift Work And Job-Related Exposure On Sleep And Musculoskeletal Outcomes In Structural Firefighters, Jacob Dennis Jelmini Jan 2023

Consequences Of Shift Work And Job-Related Exposure On Sleep And Musculoskeletal Outcomes In Structural Firefighters, Jacob Dennis Jelmini

Theses and Dissertations--Rehabilitation Sciences

Firefighting is considered one of the most dangerous occupations in the workforce. Musculoskeletal injuries are consistently the most frequent, and most costly, documented non-fatal injuries in the firefighting setting. An increase in job stress, job exposure, and deprived sleep secondary to job-related duties are plausible explanations for the frequency in musculoskeletal injury. The aims of this dissertation were to ascertain not only how occupational exposure via firefighter emergency call volume may influence outcomes contributing to job stress and objective and subjective sleep metrics, but also its influence on the incidences of musculoskeletal pain.

The results showed that emergency call volume …


Horizontal Foot Speed During Submaximal And Maximal Running, Kenneth P. Clark, Laurence J. Ryan, Christopher R. Meng, David J. Stearne Jan 2023

Horizontal Foot Speed During Submaximal And Maximal Running, Kenneth P. Clark, Laurence J. Ryan, Christopher R. Meng, David J. Stearne

Kinesiology Faculty Publications

Horizontal foot speed is fundamental for running synchronization and stability, and may also be important for sprinting performance. In this investigation, we quantified the following during steady-speed running: (a) peak forward foot speed during the swing phase, (b) backward foot speed at touchdown, and (c) ground speed difference (GSD), i.e., the difference between forward running speed and backward foot speed at touchdown. We hypothesized that forward and backward foot speed would be significantly and positively correlated with top speed, and that GSD would be significantly and negatively correlated with top speed. Participants (20 male, 20 female) completed 40-m submaximal and …


Cardiorespiratory And Muscle Recruitment Responses To Incremental Exercise In Flywheel-Based Inertial Training (Fit) Squats, Clara Joyce Mitchinson Jan 2023

Cardiorespiratory And Muscle Recruitment Responses To Incremental Exercise In Flywheel-Based Inertial Training (Fit) Squats, Clara Joyce Mitchinson

Theses and Dissertations--Kinesiology and Health Promotion

BACKGROUND: Spaceflight induces rapid loss of aerobic capacity and muscle strength. Flywheel-based Inertial Training (FIT) – a gravity-independent form of exercise previously used as a countermeasure against unloading-induced muscle atrophy – provides external resistance through moment of inertia (MOI) of a rotating disk in a velocity-dependent manner. Optimizing FIT for cardiorespiratory fitness may improve exercise efficiency and reduce hardware needs associated with deep space exploration. This modality of exercise has also been of interest among athletes of various disciplines due to its purported benefits on athletic performance. PURPOSE: To determine the cardiorespiratory and muscular recruitment responses to FIT with varying …


Effects Of Constant Load Exercise On Oxygen Consumption And Knee Joint Mechanics In Young Adults, Mariana Victoria Jacobs Jan 2023

Effects Of Constant Load Exercise On Oxygen Consumption And Knee Joint Mechanics In Young Adults, Mariana Victoria Jacobs

Theses and Dissertations--Kinesiology and Health Promotion

The rate of obesity and its adverse health consequences have continued to rise in the past several decades. Aerobic constant load exercise is recommended to reduce excess body mass, however the effects of constant load exercise on oxygen consumption (VO2) and knee joint mechanics are inconsistent when varying weight-status strategies are employed. The purpose of this study was to assess the influence of different weight classification strategies on VO2 and knee joint mechanics during constant load exercise. Participants walked on an instrumented treadmill at a self-selected speed for 30-minutes while gait mechanics and VO2 measures were determined. Between-group differences were …


Responses To Exercise Anchored To Vigorous Intensity Heart Rates, Djadmann Gustave Jan 2023

Responses To Exercise Anchored To Vigorous Intensity Heart Rates, Djadmann Gustave

Theses and Dissertations--Kinesiology and Health Promotion

Exercise prescription to improve cardiorespiratory endurance (CE) is often based on percentages of the reserve or maximum heart rate (HRpeak) or oxygen consumption rate (V̇O2peak)that reflect vigorous intensities (77-95% HRpeak, 64-90% V̇O2peak). These intensities elicit a rating of perceived exertion [RPE] response between 14-17 on the 6-20 Borg Scale. It is recommended that exercise within these ranges be sustained for 20-60min per session. The purposes of this study were to: 1) Determine the metabolic (V̇O2) and perceptual (RPE) responses as well as the sustainability of exercise (time to exhaustion [T …


Effect Of Sleep Restriction On Quadriceps’ Strength And Voluntary Activation, Scott Sigrist Jan 2023

Effect Of Sleep Restriction On Quadriceps’ Strength And Voluntary Activation, Scott Sigrist

Theses and Dissertations--Kinesiology and Health Promotion

Background: As little as three nights of sleep restriction reduces muscle strength. More than one-third of Americans are chronically sleep restricted (< 7.0 hours/night) and are at risk of muscle weakness (dynapenia). Presently, the mechanistic cause of sleep restriction-induced dynapenia (SRID) has not been elucidated. Rapid changes in muscle strength are typically driven by short-term changes in muscle contractility or voluntary recruitment. The purpose of this study was to investigate how sleep restriction affects muscle contractile function and voluntary recruitment. Methods: A sample of 12 subjects (age 24.8 ± 2.6y) underwent isometric and isokinetic knee extensor muscle testing following 3d of adequate sleep (SA; 8.05 ± 0.45h), 3 d of sleep restriction (SR; 5.02 ± 0.05h), and 7d of washout (WO, 8.27 ± 0.50). The morning (7-11a local time) following the last day of each sleep period, subjects performed muscle strength testing using an isokinetic dynamometer. Subjects sat upright with the dominant leg secured at 60⁰ of knee flexion to optimize maximal quadriceps torque. They then performed 3 maximal voluntary isometric contractions (MVICs) of the quadriceps. Then subjects performed 6 submaximal contractions at 15, 30, 45, 60, 75, and 90% of the greatest MVIC. Next, subjects completed an interpolated twitch experiment while on the isokinetic dynamometer to assess voluntary activation. Finally, subjects completed 5 repetitions of isometric contractions, in descending order, at speeds of 300, 240, 180, 120, and 60 degree/s. From these methods we measured the highest MVIC, calculated the voluntary activation (VA), measured twitch properties, and compared the torque-EMG relationship. One-way repeated measures ANOVA were used to compare sleep, MVIC, and VA values, two-way (time x twitch property) repeated measures ANOVA was used to compare twitch properties and the torque-EMG relationship. Results: MVIC torque decreased following SR compared to SA before and after sleep restriction (SA: 217.1 ± 69.4 Nm vs. SR: 199.4 ± 67.1 Nm, p = 0.032). MVIC after WO (219.2 ± 54.2 Nm) was significantly greater than SR (p = 0.018) but was not significantly different from SA (p = 0.991). Although peak isokinetic torque decreased with increasing velocity (p < 0.001), there was no significant effect of sleep or sleep x speed interaction. Peak twitch torque and rate of torque
development, but not relaxation rate, were significantly greater in the potentiated state, but no significant effect of sleep or sleep x time interaction was noted. Sleep 3 condition did not significantly affect voluntary activation (SA: 86.3 ± 11.1% v. SR:86.6 ± 11.9% v. WO 87.7 ± 11.1%; p = 0.695). The torque output at various levels ofelectromyography (EMG) activity was not significantly different among sleep conditions (p = 0.383). The mean power frequency (MPF) of the VL was …


Reliability And Validity Of A Commercial Running Power Meter To Indicate Metabolic Workload During Endurance Running, James Harris Hudgins Iii Jan 2023

Reliability And Validity Of A Commercial Running Power Meter To Indicate Metabolic Workload During Endurance Running, James Harris Hudgins Iii

Theses and Dissertations--Kinesiology and Health Promotion

Commercial running power (RP) meters may provide endurance runners and coaches with improved precision for monitoring running intensity. Cyclists rely upon the relationship between cycling power and metabolic demand to regulate physiological intensity during training and racing, independent of changes in the physical environment (e.g., terrain, wind). Research demonstrates strong reliability and validity for a specific RP meter to indicate metabolic demand within controlled running conditions. However, several potential influences on this relationship have not been investigated. Therefore, four studies were conducted with the following aims:

- Study 1: Determine the inter-limb reliability and validity of a single-limb-based RP meter …


The Effects Of Cannabidiol Cream On Soreness And Performance After Exercise In Untrained Individuals, Joseph Thomas Pastina Jan 2023

The Effects Of Cannabidiol Cream On Soreness And Performance After Exercise In Untrained Individuals, Joseph Thomas Pastina

Theses and Dissertations--Kinesiology and Health Promotion

Background: Exercise-induced muscle damage (EIMD) results from unaccustomed exercise and can lead to delayed onset muscle soreness (DOMS). Impairments associated with EIMD and DOMS can result in moderate-to-severe discomfort and hindered performance. Recently, a compound derived from the cannabis plant, cannabidiol (CBD), has been used as a recovery tool for EIMD and DOMS. Despite the rising popularity of CBD products, their effectiveness in mitigating EIMD and DOMS is unknown. Purpose: The purpose of the present study was to investigate the effects of CBD cream on DOMS and performance after an intensive lower-body exercise protocol. In addition, the study sought to …