Kinesiology Commons^™

Effects Of Power-Endurance And Controlled Heavy Squat Protocols On Vertical Jump Performance In Females, Cameron S. Mackey, Ryan M. Thiele, Jessica Schnaiter-Brasche, Doug B. Smith, Eric C. Conchola

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 1072-1085, 2020. The purpose of this investigation was to examine the immediate and acute vertical jump performance responses throughout and following two different free-weight back squat exercise protocols. Fifteen resistance-trained women (mean ± SD: age = 21.8 ± 0.9 years; height = 164.6 ± 8.4 cm; mass = 68.5 ± 9.2 kg) performed vertical jumps before (Pre), immediately after each set (S1-S5), and up to 20 minutes post squat exercise (Post0-Post20) of either a power-endurance (PE; 5×16 at 40% 1-RM) or controlled heavy (CHP; 5×8 at 80%) protocol. Participants’ jump height (JH), mean (MP), …

The Impacts Of Shoulder Position Sense, Vision, Racket Weight, And Gender On Racket Positioning Accuracy In Tennis Players, Kaitlyn Collins, Sydney Young, You-Jou Hung

International Journal of Exercise Science

International Journal of Exercise Science 13(1): 1086-1097, 2020. Repetitive loading to the shoulder joint can compromise shoulder position sense, which may further contribute to injuries and performance deficits. The first goal of the study was to examine the correlation between shoulder position sense and racket positioning accuracy. The second goal of the study was to examine the impact of visual feedback, racket weight, and gender on racket positioning accuracy in tennis players. Fifty-eight tennis players participated in the study. Active shoulder position sense was examined in 3 abduction (45°, 90°, 135°) and 2 external rotation (45°, 90°) angles. For racket …

Proceedings From The First Annual Society For Neurosports Conference, William R. Kochen

Journal for Sports Neuroscience

Proceedings from the First Annual Society for NeuroSports Conference

Effects Of Intermittent Fasting And Physical Activity On Salivary Expression Of Reduced Glutathione And Interleukin-1b, Colton Allen, Brandon Sellers, Mackinzie Smith, Alyssa Edwards, Kirsten Gateless, Bailey Aab, Kalee Sherrard, Carl Bolyard, Shawn Stover

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 1063-1071, 2020. Previous research has consistently demonstrated that regular exercise promotes antioxidant production and decreases the expression of inflammation markers. However, there is very little research examining the effects of intermittent fasting (IF) on oxidative stress and inflammation. The present study investigated the hypothesis that a combination of IF and physical activity will reduce the need for glutathione (GSH) production by decreasing oxidative stress. In addition, it was hypothesized that a combination of IF and physical activity will significantly reduce inflammation, as indicated by a decrease in interleukin-1b (IL-1b) concentration. For three months, subjects …

Black Drowning Deaths: An Introductory Analysis, Alena Gadberry, James Gadberry

International Journal of Aquatic Research and Education

Black children between the ages of 5 and 14 are 2.6 times more likely to drown than white children. A systematic exclusion from public pools and other forms of water activities over time has led to a lack of cultural capital involving aquatics among black families. Pierre Bourdieu has provided a theoretical foundation in which to understand this issue. The social fields created by generational socialization have made blacks feel like they have no place in the water. It will take a restructuring of the social institutions to set in motion the socialization (or a re-socialization) of new and more …

Combined Anthocyanins And Bromelain Supplement Improves Endothelial Function And Skeletal Muscle Oxygenation Status In Adults: A Double-Blind Placebo-Controlled Randomised Crossover Clinical Trial, Elizabeth J. Pekas, Jaehyun Shin, Ronald Headid Iii, Won-Mok Son, Gwenael Layec, Santosh K. Yadav, Steven D. Scott, Song-Young Park

Health and Kinesiology Faculty Publications

Anthocyanins and bromelain have gained significant attention due to their antioxidative and anti-inflammatory properties. Both have been shown to improve endothelial function, blood pressure (BP) and oxygen utility capacity in humans; however, the combination of these two and the impacts on endothelial function, BP, total antioxidant capacity (TAC) and oxygen utility capacity have not been previously investigated. The purpose of this study was to investigate the impacts of a combined anthocyanins and bromelain supplement (BE) on endothelial function, BP, TAC, oxygen utility capacity and fatigability in healthy adults. Healthy adults (n 18, age 24 (SD 4) years) received BE or …

Developing And Comparing Sensor For Movement Analysis And Biofeedback, Umaiyaal Vasudevaraja

Theses and Dissertations

Background: Recent advances in the field of wearable technology are now at a peak in the sports field and the medical field. The validity, reliability, and application of such systems are still under research and yet to be revealed.

Purpose: This study aims to design and constructing the Inertial Measurement Unit (IMU) hardware with the required software to collect accelerometer data for potential use in human movement studies and test the efficacy of the collected IMU accelerometer data by comparing it with the motion capture data.

Methods: In this study, the IMU sensor is coupled with the Arduino, loaded with …

Contribution Of Velocity Congruency And Apparent Stiffness To Interference Of Bimanual Rhythmic-Discrete Movements., Marcelline E. Dechenaud

LSU Master's Theses

Many actions feature rhythmic and discrete movements, individually or in combinations. Rhythmic movements are defined as those having no clearly defined start and end-point, while discrete movements have a definite starting and ending posture. Performing a discrete movement against a base rhythm by the contralateral limb typically speeds up the rhythmic movement -- indicating the presence of bimanual coupling. While bimanual rhythmic/rhythmic interaction has been studied extensively in the field, understanding of the interaction between discrete and rhythmic movements has been less represented. In this thesis, I examined two potential sources of interlimb interference during rhythmic-discrete bimanual actions: 1) velocity …

Calculating An Equation To Estimate The Maximum Oxygen Uptake In Lifeguards, Brais Ruibal-Lista, José Palacios-Aguilar, José Antonio Prieto, Sergio López-García, Miguel Santiago-Alonso, José Antonio Cecchini-Estrada, Cristian Abelairas-Gómez

International Journal of Aquatic Research and Education

The aim of this study was to derive an equation that validly and reliably estimates the VO₂ reached in the IPTL, a maximum stress test for lifeguards. From the results obtained in the first part of the research, a multiple linear regression model was identified. A "stepwise" procedure was established as a variable selection method, where the VO_2IPTL was selected as the dependent variable and the maximum time reached in the IPTL (s), the percentage of muscle mass (%) and weight of the participant (kg), as independent variables. This procedure generated a regression model where a high correlation …

Sensory Conflict Alters Visual Perception Of Action Capabilities During Crossing Of A Closing Gap In Virtual Reality, Natalie A. Snyder, Michael E. Cinelli

Kinesiology and Physical Education Faculty Publications

The somatosensory, vestibular, and visual systems contribute to multisensory integration, which facilitates locomotion around obstacles in the environment. The joystick-controlled virtual reality (VR) locomotion interface does not preserve congruent sensory input like real-walking, yet is commonly used in human behaviour research. Our purpose was to determine if collision avoidance behaviours were affected during an aperture crossing task when somatosensory and vestibular input were incongruent, and only vision was accurate. Participants included 36 young adults who completed a closing-gap aperture crossing task in VR using real-walking and joystick-controlled locomotion. Participants successfully completed the task using both interfaces. Switch point between passable …

Portuguese Lifeguards Performance In Aquatic Rescue: An Exploratory Study, Olga G. Marques Ph.D., José Palacios-Aguilar Ph.D, Henrique G. Melo Mcs., Nuno G. Leitão, Lucia P. Castillo Msc., David Szpilman M.D, Luís Rama Ph.D.

International Journal of Aquatic Research and Education

The objective of the study was to compare the performance of Portuguese lifeguards in two trials of simulated rescue at the beach within a regular continuous workday. Additionally, the study aimed to analyse the influence of experience and initial course syllabus on the rescue performance. A total of 86 Portuguese lifeguards (LG) participated in this study, 69 males and 17 females. The two simulated drowning occurrences were planned to occur at 50 meters from the coastline between 9.00h am and 18.00h pm. The weather conditions, the characteristics of the beach, wave amplitude were also controlled. The results were analysed through …

Prediction Of Trabecular Bone Architectural Features By Deep Learning Models Using Simulated Dxa Images, Pengwei Xiao, Tinghe Zhang, Xuanliang Neil Dong, Yan Han, Yufei Huang, Xiaodu Wang

Health & Kinesiology Faculty Publications and Presentations

Dual-energy X-ray absorptiometry (DXA) is widely used for clinical assessment of bone mineral density (BMD). Recent evidence shows that DXA images may also contain microstructural information of trabecular bones. However, no current image processing techniques could aptly extract the information. Inspired by the success of deep learning techniques in medical image analyses, we hypothesized in this study that DXA image-based deep learning models could predict the major microstructural features of trabecular bone with a reasonable accuracy. To test the hypothesis, 1249 trabecular cubes (6 mm × 6 mm × 6 mm) were digitally dissected out from the reconstruction of seven …

Neuromotor Control Of The Hand During Smartphone Manipulation, Prasanna Kumar Acharya

LSU Doctoral Dissertations

The primary focus of this dissertation was to understand the motor control strategy used by our neuromuscular system for the multi-layered motor tasks involved during smartphone manipulation. To understand this control strategy, we recorded the kinematics and multi-muscle activation pattern of the right limb during smartphone manipulation, including grasping with/out tapping, movement conditions (MCOND), and arm heights.

In the first study (chapter 2), we examined the neuromuscular control strategy of the upper limb during grasping with/out tapping executed with a smartphone by evaluating muscle-activation patterns of the upper limb during different movement conditions (MCOND). There was a change in muscle …

Determining Perceptions To Electronically-Delivered, Personally-Adaptive, Multimedia Exercise Prompts For Middle-Age Adults, Paula-Marie M. Ferrara, Ethan T. Schaltegger, Cory Beaumont, Kelley Strohacker

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 979-995, 2020. Due to high interaction rates, smart devices are being utilized for mobile health (mHealth) interventions. Multimedia capabilities may be leveraged to improve mHealth exercise interventions. Our purpose was to explore individuals’ perceptions of multimedia exercise prompts tailored to their immediate mental/physical states. Using electronic surveys, respondents provided in-the-moment ratings of emotional state, energy, fatigue, physical discomfort, and thirst, with higher scores reflecting a higher “readiness to exercise” (i.e., if a person is currently in a pleasant mood with high energy and low discomfort, he/she is likely to have a greater capacity for …

The Relationship Between Aerobic Test Performance And Injuries In Police Recruits, Robin Marc Orr, Danielle Ferguson, Ben Schram, J. Jay Dawes, Robert G. Lockie, Rodney Pope

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 1052-1062, 2020. Lower levels of fitness are associated with an increased risk of injury in police recruits. The aim of this study was to determine the relationships between initial aerobic performance assessments and injury risk during police recruit training. Retrospective data from 219 police recruits undergoing training program at a state police training academy, including 20-m Multistage Fitness Test (MSFT) and 30-15 Intermittent Fitness Test (IFT) scores and injury data, were collected. Spearman’s correlation analysis revealed a significant negative correlation between levels of fitness (MSFT rs = - 0.292, p < 0.001: 30-15 IFT rs=- 0.315, p < 0.001) and rates of injury. Furthermore, a Pearson’s correlation showed a strong correlation between MSFT and the 30-15 IFT scores (r = 0.877, p < 0.001). Police recruits with lower fitness were at a higher risk of injury than those with higher fitness over the duration of a recruit training program. These findings indicate that aerobic performance assessments may be used by law enforcement agencies to estimate the relative risks of injury among cadets.

Reproducibility Of Objective And Subjective Markers Of Exercise Recovery In College Aged Males, Katie Coffey, Rachel Mccollum, Elizabeth Smyth, Eliza Casey, Jade Plunkett, Katy Horner

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 1041-1051, 2020. This study investigated the reproducibility of objective and subjective parameters of recovery pre- and post-exercise in college-aged male athletes. Thirteen male (aged 19-22y) team sport players were assessed for a range of recovery markers before and 24 hours after a repeated sprint protocol. An identical procedure was followed one week later. Participants undertook two objective tests: creatine kinase (CK) and countermovement jump (CMJ) height; and two subjective tests: visual analogue scale (VAS) for muscle soreness and 5-item well-being questionnaire (WB). Coefficients of variation (CV) of CMJ and WB were lowest of all …

Anthropometrical And Physical Fitness Predictors Of Operational Military Test Performance In Air Force Personnel, Raí Tripolone Silva, Fabio A D Campos, Leandra Cristina Benetti Campos, Monica Y. Takito, Edison M. Miron, Idico L. Pellegrinotti, Emerson Franchini

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 1028-1040, 2020. The objective of this study was to verify the relationships between the anthropometrical and physical fitness parameters (measured by the Physical Conditioning Assessment (PCA) of the Aeronautics Command), with the operational performance in the simulated military task performance (SMTP) performed by the infantry military of a Brazilian Air Force (BAF) unit. These evaluations were performed on two distinct days, interspersed by 48h, with PCA on the first day and the SMTP in the second. The distribution of the dependent variable was not normal (Shapiro-Wilk test, p = 0.001). Data are presented as …

Analyzing The Training Load Demands, And Influence Of Sex And Body Mass, On The Tactical Task Of A Casualty Drag Via Surface Electromyography Wearable Technology, Robert G. Lockie, Matthew R. Moreno, Spencer Ducheny, Robin Marc Orr, J. Jay Dawes, Katherine Balfany

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 1012-1027, 2020. This study measured the training load (TL) demands associated with a military-specific casualty drag measured via surface electromyography (sEMG) wearable technology, and the influence of sex and body mass on these measures. Thirty-six college-aged participants (males = 25; females = 11) performed two trials of a 123-kg (91-kg dummy with 32-kg load) backwards casualty drag over 15 m. Time was recorded to calculate drag velocity, with the fastest trial analyzed. Prior to testing, participants were fitted with compression garments embedded with sensors to measure the vastus lateralis and medialis (quadriceps; QUAD), biceps …

A Comparison Of V̇O2, And Muscle And Prefrontal Cortex Tissue Oxygen Extraction Between Short And Long-Term Aerobically Trained Men Aged 40 - 60 Years, Gavin Buzza

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 964-978, 2020. This study was designed to compare systemic O₂ utilization (V̇O₂), and changes in tissue O₂ extraction [deoxyhemoglobin (ΔHHb)] in the vastus lateralis (VL), gastrocnemius (GAST) and pre-frontal cortex (PFC) tissue; between aerobically short-term trained (STT) and long-term trained (LTT) older men (40 - 60 yr) who were matched for current training load. On separate occasions, 14 STT and 14 LTT participants completed ramp incremental (RI) and square-wave constant load (SWCL) tests on a cycle ergometer. In LTT compared to STT; (i) V̇O₂ was higher during the RI …

Physiological And Biomechanical Differences Between Seated And Standing Uphill Cycling, Quint N. Berkemeier, Brent W. Alumbaugh, Trevor Gillum, Jared Coburn, Jong-Kyung Kim, Michael Reeder, Chelsie A. Fechtner, Gerald A. Smith

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 996-1011, 2020. Despite differences in economy, cyclists climb in seated and standing positions. Prompted by gaps in research, we compared VO₂ and heart rate (HR) (Study 1), muscle activation (Study 2) and breathing and pedaling entrainment (Study 3). METHODS: Subjects rode their bicycles on a treadmill in seated and standing positions. In Study 1, VO₂ and HR of four male cyclists (21.3 ± 1.7 yrs; 69.1 ± 6 ml/kg/min) were collected, alternating positions every 5 minutes for 20 minutes (8 mph, 8% grade). In Study 2, muscle activations of eight male cyclists …