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Biomechanics and Neural Control

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Full-Text Articles in Education

Effect Of Wheelchair Transfer Surface Firmness On Acceleration Of The Torso, Cassandra Chang, Scott P. Mclean, Edward Merritt, Laura Vides Feb 2019

Effect Of Wheelchair Transfer Surface Firmness On Acceleration Of The Torso, Cassandra Chang, Scott P. Mclean, Edward Merritt, Laura Vides

International Journal of Exercise Science: Conference Proceedings

Moving from a surface that provides adequate support can affect the quality of wheelchair transfers such that softer surfaces, which are less supportive may compromise these movements. PURPOSE: This research examined the effect of surface firmness on wheelchair transfer performance. METHODS: A convenience sample of fourteen healthy, able-bodied college students, who’s average height, weight and age were 76kg, 167 cm, and 20.5 years, respectively, participated in this study. Participants were taught a basic wheelchair transfer. A wireless triaxial accelerometer was positioned on the dorsal surface of the trunk at approximately the mid-thoracic level. Participants performed five trials under ...


Increasing Vertical Jump Height Using Two Alternative Post-Activation Potentiation Methods, Itzel N. De La Torre, Samuel Montalvo, Daniel Conde, Gabriel Mejia, Sandor Dorgo Feb 2019

Increasing Vertical Jump Height Using Two Alternative Post-Activation Potentiation Methods, Itzel N. De La Torre, Samuel Montalvo, Daniel Conde, Gabriel Mejia, Sandor Dorgo

International Journal of Exercise Science: Conference Proceedings

Post-Activation Potentiation (PAP) is an exercise concept involving maximal muscular contraction to improve subsequent a dynamic contraction. An effective PAP method is one based on a balanced state of physical readiness and fatigue. Fatigued muscles reduce muscle performance. However, non-fatiguing muscular contractions at high loads with short duration can enhance muscle performance. Heart Rate (HR) can be used as an indicator of exercise readiness and fatigue. Additionally Heart Rate Percentage (HR %) was used as an indicator of readiness. PURPOSE: To assess the feasibility of using Heart Rate Percentage (HR%) as a readiness indicator during a back-squat PAP method. METHODS: Nineteen ...


Can Changes In Running Biomechanics Under Body Weight Support Conditions Lead To Improvements In Aerobic And Anaerobic Energy Capacities?, Shernice A. Thomas, Christopher J. Arellano Feb 2019

Can Changes In Running Biomechanics Under Body Weight Support Conditions Lead To Improvements In Aerobic And Anaerobic Energy Capacities?, Shernice A. Thomas, Christopher J. Arellano

International Journal of Exercise Science: Conference Proceedings

During the ground contact phase of running, muscles in the lower limb are required to generate force to support body weight which is the most energy-demanding task during running. We are interested in understanding how running mechanics change when we reduce the need for body weight support and how these effects determine maximal metabolic power at top speed. PURPOSE: We aim to determine the biomechanical determinants that underlie peak metabolic power during body weight (BW)-supported running. METHODS: Twenty-five healthy young adults (age 18-36, M/F, BMI < 30.0) who are experienced runners will be recruited for this study. Subjects will complete a graded exercise test to determine their peak metabolic power output at 100% BW at 75% BW. During each trial, subjects’ rates of expired oxygen and carbon dioxide, stance and leg swing times, rating of perceived exertion (RPE), and heart rate will be recorded. RESULTS: Our preliminary findings show that similar peak metabolic power output values, at ...


The Effects Of Two Post-Activation Potentiation Methods On Muscular Activation, Ileana A. Jarquin, Samuel Montalvo, Daniel Conde, Gabriel Ibarra-Mejia, Sandor Dorgo Feb 2019

The Effects Of Two Post-Activation Potentiation Methods On Muscular Activation, Ileana A. Jarquin, Samuel Montalvo, Daniel Conde, Gabriel Ibarra-Mejia, Sandor Dorgo

International Journal of Exercise Science: Conference Proceedings

Post Activation Potentiation (PAP) is an exercise concept based on utilizing a maximal voluntary contraction of the muscles at task to potentiate a dynamic muscular contraction of the same muscles. It is well established that PAP is modulated between performance readiness and muscular fatigue. Heart Rate percentage (HR%) has been used as an indicator of performance readiness and muscular fatigue. PURPOSE: To examine different muscular activation (μV) in response to two different PAP protocols during the vertical jump exercise. METHODS: 8 participants (5 males and 3 females; mean ± SD: Age = 22.6 ± 1.76 years; Height = 1.70 ± .07 m ...


Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert Feb 2019

Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert

International Journal of Exercise Science: Conference Proceedings

Running economy (RE) can be defined as the oxygen consumption or caloric unit cost required to move at a specific velocity. In addition to a runner’s maximal oxygen uptake (VO2max) and lactate threshold (LT), RE is a key endurance performance determinant. Better RE is advantageous as it represents the ability to run at a lower relative percentage of VO2max at a given speed and reduces the rate of energy depletion. Ground contact time (GCT) has been associated with RE, however it has not been established how GCT imbalances between feet impact economy. Purpose: Determine the relationship between cadence, GCT ...


Asymmetry Of Ground Contact Times And Flight Times During Running At Different Speeds, M. Wortley, T. Vitale, T. O'Toole May 2018

Asymmetry Of Ground Contact Times And Flight Times During Running At Different Speeds, M. Wortley, T. Vitale, T. O'Toole

International Journal of Exercise Science: Conference Proceedings

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Ground Contact Times And Flight Times At Different Running Speeds In Novice And Competitive Runners, T. Vitale, T. O'Toole, M. Wortley May 2018

Ground Contact Times And Flight Times At Different Running Speeds In Novice And Competitive Runners, T. Vitale, T. O'Toole, M. Wortley

International Journal of Exercise Science: Conference Proceedings

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Hip Strength Influences Ground Reaction Force Attenuation On A Side Leap In Collegiate Dancers, M. Sobel, D. Stearne, K. Clark May 2018

Hip Strength Influences Ground Reaction Force Attenuation On A Side Leap In Collegiate Dancers, M. Sobel, D. Stearne, K. Clark

International Journal of Exercise Science: Conference Proceedings

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Does Fatiguing Exercise Influence Performance On An Affordance-Based Action Boundary Task?, A. Sinnott, M. Lovalekar, E. Nagle, A. Beethe, T. Nagai, B. Nindl, C. Connaboy May 2018

Does Fatiguing Exercise Influence Performance On An Affordance-Based Action Boundary Task?, A. Sinnott, M. Lovalekar, E. Nagle, A. Beethe, T. Nagai, B. Nindl, C. Connaboy

International Journal of Exercise Science: Conference Proceedings

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High Speed Cycling And The Law Of Initial Values In Parkinson's Disease, B. Sibson, R. Daniels, S. Howard, M. Josephson, C. Knight May 2018

High Speed Cycling And The Law Of Initial Values In Parkinson's Disease, B. Sibson, R. Daniels, S. Howard, M. Josephson, C. Knight

International Journal of Exercise Science: Conference Proceedings

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Learning Effect Of Anchoring Bias In Combination With Action-Perception Coupling In Novice Golf Putting, A. Nixon, M. Miltenberger, S. Davis, G. Moir May 2018

Learning Effect Of Anchoring Bias In Combination With Action-Perception Coupling In Novice Golf Putting, A. Nixon, M. Miltenberger, S. Davis, G. Moir

International Journal of Exercise Science: Conference Proceedings

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The Effects Of Vision Impairment On Balance In Athletes And Non-Athletes, R. Narr, K. Daly, A. O'Neill, K. Linkchorst, J. Sanders, S. Paulson May 2018

The Effects Of Vision Impairment On Balance In Athletes And Non-Athletes, R. Narr, K. Daly, A. O'Neill, K. Linkchorst, J. Sanders, S. Paulson

International Journal of Exercise Science: Conference Proceedings

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Indexing Attentional Focus: A Critical Neural Element Of Athletic Performance, C. Lu, B. Hatfield May 2018

Indexing Attentional Focus: A Critical Neural Element Of Athletic Performance, C. Lu, B. Hatfield

International Journal of Exercise Science: Conference Proceedings

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Inter-Segmental Coordination Strategies And Kinematics Utilized During A Single Leg 180⁰ Jump, K. Krajewski, C. Mccabe, S. Brown, C. Connaboy May 2018

Inter-Segmental Coordination Strategies And Kinematics Utilized During A Single Leg 180⁰ Jump, K. Krajewski, C. Mccabe, S. Brown, C. Connaboy

International Journal of Exercise Science: Conference Proceedings

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Differences In Neuromuscular Excitation Rates In Young Adult, Older Adult, And People With Parkinson's Disease, M. Josephson, C. Knight May 2018

Differences In Neuromuscular Excitation Rates In Young Adult, Older Adult, And People With Parkinson's Disease, M. Josephson, C. Knight

International Journal of Exercise Science: Conference Proceedings

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Electromyography And Y-Balance Test For Assessment Of Neuromuscular Control Of Lower Extremities In Collegiate Athletes, A. Griffith, V. Homer, C. Mason, A. Kuperavage May 2018

Electromyography And Y-Balance Test For Assessment Of Neuromuscular Control Of Lower Extremities In Collegiate Athletes, A. Griffith, V. Homer, C. Mason, A. Kuperavage

International Journal of Exercise Science: Conference Proceedings

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The Effect Of Mental Preparation On Voluntary Torque Production And Cortico-Cortical Communication, A. Ginsberg, C. Lu, E. Elue, M. Bah, B. Hatfield May 2018

The Effect Of Mental Preparation On Voluntary Torque Production And Cortico-Cortical Communication, A. Ginsberg, C. Lu, E. Elue, M. Bah, B. Hatfield

International Journal of Exercise Science: Conference Proceedings

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Evaluation Of Active Sitting Using Hip Accelerations, Z. Fox, M. Rhudy, P. Veerabhadrappa May 2018

Evaluation Of Active Sitting Using Hip Accelerations, Z. Fox, M. Rhudy, P. Veerabhadrappa

International Journal of Exercise Science: Conference Proceedings

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Psyching Effects On Voluntary Torque Production And Cortico-Cortical Communication Using Electroencephalography, E. Elue, M. Bah, A. Ginsberg, C. Lu, B. Hatfield May 2018

Psyching Effects On Voluntary Torque Production And Cortico-Cortical Communication Using Electroencephalography, E. Elue, M. Bah, A. Ginsberg, C. Lu, B. Hatfield

International Journal of Exercise Science: Conference Proceedings

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Action Boundary Perception, Depression And Visuomotor Symptoms Differentiate Healthy Controls From Athletes With Recent Concussion, S. Eagle, B. Nindl, C. Johnson, A. Kontos, C. Connaboy May 2018

Action Boundary Perception, Depression And Visuomotor Symptoms Differentiate Healthy Controls From Athletes With Recent Concussion, S. Eagle, B. Nindl, C. Johnson, A. Kontos, C. Connaboy

International Journal of Exercise Science: Conference Proceedings

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Relationship Among Semg Measures Of Neuromuscular Excitation, J. Diana, M. Josephson, C. Knight May 2018

Relationship Among Semg Measures Of Neuromuscular Excitation, J. Diana, M. Josephson, C. Knight

International Journal of Exercise Science: Conference Proceedings

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Segmented Motor Output In Parkinson's Disease Improved With Speed-Based Exercise, R. Daniels, C. Knight May 2018

Segmented Motor Output In Parkinson's Disease Improved With Speed-Based Exercise, R. Daniels, C. Knight

International Journal of Exercise Science: Conference Proceedings

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A Comparison Of Self-Reported Pain Levels In Minimally-Shod Vs. Traditionally-Shod Runners With Different Forefoot Types, L. Cline, E. Casto, K. Galbreath, J. Mccrory May 2018

A Comparison Of Self-Reported Pain Levels In Minimally-Shod Vs. Traditionally-Shod Runners With Different Forefoot Types, L. Cline, E. Casto, K. Galbreath, J. Mccrory

International Journal of Exercise Science: Conference Proceedings

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Excessive Foot Mobility Enhances Static Stability Under Visual Perturbation, R. Bruno, D. Stearne, K. Clark, M. Murphy, H. Kim May 2018

Excessive Foot Mobility Enhances Static Stability Under Visual Perturbation, R. Bruno, D. Stearne, K. Clark, M. Murphy, H. Kim

International Journal of Exercise Science: Conference Proceedings

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Intermittent Theta Burst Stimulation Does Not Improve Reaction Speeds In Females With Anterior Cruciate Ligament Injuries, A. Beethe, C. Dunn-Lewis, C. Connaboy, S. Flanagan May 2018

Intermittent Theta Burst Stimulation Does Not Improve Reaction Speeds In Females With Anterior Cruciate Ligament Injuries, A. Beethe, C. Dunn-Lewis, C. Connaboy, S. Flanagan

International Journal of Exercise Science: Conference Proceedings

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Balance And Muscular Torque Difference Between Recreationally Active Males And Females, N. Barrios, P. Hosick May 2018

Balance And Muscular Torque Difference Between Recreationally Active Males And Females, N. Barrios, P. Hosick

International Journal of Exercise Science: Conference Proceedings

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Kinematic Comparison Of Underwater Dolphin And Flutter Kicking Performed In A Prone And Supine Body Position, Peter Robinson, Taylor L. Adams, Kali Rose, Mickey B. Scharbrough, Scott P. Mclean Feb 2018

Kinematic Comparison Of Underwater Dolphin And Flutter Kicking Performed In A Prone And Supine Body Position, Peter Robinson, Taylor L. Adams, Kali Rose, Mickey B. Scharbrough, Scott P. Mclean

International Journal of Exercise Science: Conference Proceedings

Despite an increasing emphasis on underwater dolphin kicking in competitive swimming, little objective research exists to explain its preference over flutter kicking. PURPOSE: To examine kinematic characteristics of flutter and dolphin kicking performed in prone and supine body positions. METHODS: Ten collegiate swimmers (1.77±0.07 m, 72.4±7.6 kg, 19.8±1.0 yrs) experienced with dolphin and flutter kicking completed eight 10 m maximal effort underwater kicking trials. Body position and kicking style were randomly varied between trials such that half of all trials were performed using each kicking style and each body position. A ...


3-Dimensional Biomechanical Comparison Of Spinal Posture In Yoga Practitioners And Non-Practitioners During A Seated And Standing Position, Savannah V. Wooten Feb 2018

3-Dimensional Biomechanical Comparison Of Spinal Posture In Yoga Practitioners And Non-Practitioners During A Seated And Standing Position, Savannah V. Wooten

International Journal of Exercise Science: Conference Proceedings

Yoga has been claimed to be beneficial for helping a series of clinical populations and improving ailments such as, but not limited to, stress, chronic back pain, muscle endurance, flexibility, balance, and posture. Whereas many of the above listed assertions have been scientifically investigated, there is a lack of objective evidence that supports the claim that yoga improves posture. PURPOSE: The purpose of this study is to compare a 3-D biomechanical analysis of spinal posture among yoga practitioners (YP) and Non yoga practitioners (NP) during seated and standing positions. METHODS: 10 yoga practitioners (M= 3, F=7) and 10 non-yoga ...


Exploiting Arm Swinging Dynamics To Reduce The Metabolic Cost Of Walking While Carrying Loads, Obioma B. Mcreynolds, Christopher J. Arellano Feb 2018

Exploiting Arm Swinging Dynamics To Reduce The Metabolic Cost Of Walking While Carrying Loads, Obioma B. Mcreynolds, Christopher J. Arellano

International Journal of Exercise Science: Conference Proceedings

Arm swing while walking at one’s optimal speed is primarily driven by passive pendulum mechanics, an energy saving mechanism that has been speculated to incur little to no metabolic cost. PURPOSE: In line with this idea, we set out to determine whether carrying loads on the swinging and non-swinging arms while walking would be less costly than carrying loads at other locations on the body. We hypothesized that carrying loads on the arms while restricted from swinging would demand a greater metabolic cost than carrying loads on the arms while naturally swinging. For relative comparisons, we also explored the ...


What Determines The Metabolic Cost Of Human Running Across A Wide Range Of Velocities?, Shalaya Kipp, Alena Marie Grabowski, Rodger Kram Feb 2018

What Determines The Metabolic Cost Of Human Running Across A Wide Range Of Velocities?, Shalaya Kipp, Alena Marie Grabowski, Rodger Kram

International Journal of Exercise Science: Conference Proceedings

The cost of generating force hypothesis proposes that the metabolic rate during running is determined by the rate of muscle force development (1/tc, tc=contact time) and volume of active leg muscle. A previous study assumed a constant recruited muscle volume and reported that the rate of force development alone explains ~70% of the increase in metabolic rate for human runners across a moderate velocity range (2-4 m s-1). PURPOSE: We performed a more systematic analysis of the effective mechanical advantage (EMA) of the lower leg over a wide velocity range to determine if we could ...