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Kinesiology

Walking

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Full-Text Articles in Life Sciences

Validation Of Practical Tools To Identify Walking Cadence To Reach Moderate Intensity, Spencer F.C. Smith, Matthew A. Short, Martin Sénéchal, Danielle R. Bouchard Nov 2019

Validation Of Practical Tools To Identify Walking Cadence To Reach Moderate Intensity, Spencer F.C. Smith, Matthew A. Short, Martin Sénéchal, Danielle R. Bouchard

International Journal of Exercise Science

International Journal of Exercise Science 12(4): 1244-1253, 2019. It is recommended that adults get at minimum 150 minutes of moderate-to-vigorous physical activity in bouts of 10 minutes or greaterevery week. Walking cadence (steps per minute) is one easy way to estimate intensity required, however tools that claim to quantify walking intensity via walking cadence have not been validated in adults. We aimed to validate: 1- the accuracy of walking cadence measurement by the Piezo RxD pedometer, Polar Stride Sensor Bluetooth Smart foot pod, and Garmin Ant+ foot pod at different speeds and slopes and 2- the ability of the ...


Development And Cross-Validation Of A Cadence-Based Metabolic Equation For Walking, Christopher C. Moore Jul 2019

Comparison Of An Acute Bout Of Exercise To A Sugary Snack On Energy, Mood And Cognitive Performance, Erica Knowles May 2019

Comparison Of An Acute Bout Of Exercise To A Sugary Snack On Energy, Mood And Cognitive Performance, Erica Knowles

Electronic Theses and Dissertations

Low perceived energy and a decline in cognitive performance throughout the day are common issues, though exercise and food consumption are suggested to improve mood and cognition. The present study compares effects of acute exercise to consuming sugar on mood, energy, and cognitive performance. Subjects underwent blood glucose testing, completed an Abbreviated Profile of Mood States Questionnaire, and Automated Operation Span (OSPAN) and Digit Span tests to measure memory and attention. On two separate days subjects consumed candy or walked on a treadmill for 10 minutes, then measurements were repeated at 30-min, 60-min, and 120-min post. Two-way ANOVA over time ...


How Do Neighbourhood Definitions Influence The Associations Between Built Environment And Physical Activity?, Suzanne Mavoa, Nasser Bagheri, Mohammad Javad Koohsari, Andrew T. Kaczynski, Karen Elaine Lamb, Koichiro Oka, David O'Sullivan, Karen Witten Jan 2019

How Do Neighbourhood Definitions Influence The Associations Between Built Environment And Physical Activity?, Suzanne Mavoa, Nasser Bagheri, Mohammad Javad Koohsari, Andrew T. Kaczynski, Karen Elaine Lamb, Koichiro Oka, David O'Sullivan, Karen Witten

Faculty of Health Sciences Publications

Researchers investigating relationships between the neighbourhood environment and health first need to decide on the spatial extent of the neighbourhood they are interested in. This decision is an important and ongoing methodological challenge since different methods of defining and delineating neighbourhood boundaries can produce different results. This paper explores this issue in the context of a New Zealand-based study of the relationship between the built environment and multiple measures of physical activity. Geographic information systems were used to measure three built environment attributes—dwelling density, street connectivity, and neighbourhood destination accessibility—using seven different neighbourhood definitions (three administrative unit boundaries ...


Gait Characteristics And Falls In Parkinson's Disease: A Systematic Review And Meta-Analysis [Accepted Manuscript], Mark W. Creaby, Michael H. Cole Dec 2018

Gait Characteristics And Falls In Parkinson's Disease: A Systematic Review And Meta-Analysis [Accepted Manuscript], Mark W. Creaby, Michael H. Cole

Faculty of Health Sciences Publications

Introduction: Given the high rate of falls during walking in people with idiopathic Parkinson's disease (PD), identifying at risk individuals and developing targeted interventions to reduce falls incidence is paramount. Numerous studies have investigated gait-related risk factors for falls in PD, however findings are inconsistent across studies, and thus a synthesis of the current evidence is needed to guide clinical practice and the development of interventions to reduce falls risk. The objective of this study was to systematically review the literature regarding the association between walking biomechanics and falls in people with PD, and where possible, perform meta-analyses. Methods ...


Linking Gait Dynamics To Mechanical Cost Of Legged Locomotion, David V. Lee, Sarah L. Harris Oct 2018

Linking Gait Dynamics To Mechanical Cost Of Legged Locomotion, David V. Lee, Sarah L. Harris

Life Sciences Faculty Publications

For millenia, legged locomotion has been of central importance to humans for hunting, agriculture, transportation, sport, and warfare. Today, the same principal considerations of locomotor performance and economy apply to legged systems designed to serve, assist, or be worn by humans in urban and natural environments. Energy comes at a premium not only for animals, wherein suitably fast and economical gaits are selected through organic evolution, but also for legged robots that must carry sufficient energy in their batteries. Although a robot's energy is spent at many levels, from control systems to actuators, we suggest that the mechanical cost ...


On The Choice Of Multiscale Entropy Algorithm For Quantification Of Complexity In Gait Data, Peter C. Raffalt, William Denton, Jennifer M. Yentes Oct 2018

On The Choice Of Multiscale Entropy Algorithm For Quantification Of Complexity In Gait Data, Peter C. Raffalt, William Denton, Jennifer M. Yentes

Journal Articles

The present study aimed at identifying a suitable multiscale entropy (MSE) algorithm for assessment of complexity in a stride-to-stride time interval time series. Five different algorithms were included (the original MSE, refine composite multiscale entropy (RCMSE), multiscale fuzzy entropy, generalized multiscale entropy and intrinsic mode entropy) and applied to twenty iterations of white noise, pink noise, or a sine wave with added white noise. Based on their ability to differentiate the level of complexity in the three different generated signal types, and their sensitivity and parameter consistency, MSE and RCMSE were deemed most appropriate. These two algorithms were applied to ...


Exoskeleton Assistance Symmetry Matters: Unilateral Assistance Reduces Metabolic Cost, But Relatively Less Than Bilateral Assistance, Philippe Malcolm, Samuel Galle, Pieter Van Den Berghe, Dirk De Clercq Aug 2018

Exoskeleton Assistance Symmetry Matters: Unilateral Assistance Reduces Metabolic Cost, But Relatively Less Than Bilateral Assistance, Philippe Malcolm, Samuel Galle, Pieter Van Den Berghe, Dirk De Clercq

Journal Articles

Background: Many gait impairments are characterized by asymmetry and result in reduced mobility. Exoskeletons could be useful for restoring gait symmetry by assisting only one leg. However, we still have limited understanding of the effects of unilateral exoskeleton assistance. Our aim was to compare the effects of unilateral and bilateral assistance using a within-subject study design.

Methods: Eleven participants walked in different exoskeleton conditions. In the Unilateral conditions, only one leg was assisted. In Bilateral Matched Total Work, half of the assistance from the Unilateral conditions was applied to both legs such that the bilateral sum was equal to that ...


Bi-Articular Knee-Ankle-Foot Exoskeleton Produces Higher Metabolic Cost Reduction Than Weight-Matched Mono-Articular Exoskeleton, Philippe Malcolm, Samuel Galle, Dirk De Clercq Mar 2018

Bi-Articular Knee-Ankle-Foot Exoskeleton Produces Higher Metabolic Cost Reduction Than Weight-Matched Mono-Articular Exoskeleton, Philippe Malcolm, Samuel Galle, Dirk De Clercq

Journal Articles

The bi-articular m. gastrocnemius and the mono-articular m. soleus have different and complementary functions during walking. Several groups are starting to use these biological functions as inspiration to design prostheses with bi-articular actuation components to replace the function of the m. gastrocnemius. Simulation studies indicate that a bi-articular configuration and spring that mimic the m. gastrocnemius could be beneficial for orthoses or exoskeletons. Our aim was to test the effect of a bi-articular and spring configuration that mimics the m. gastrocnemius and compare this to a no- spring and mono-articular configuration. We tested nine participants during walking with knee-ankle-foot exoskeletons ...


Stepping It Up: Walking Behaviors In Children Transitioning From 5th To 7th Grade, Sharon E. Taverno Ross, Morgan N. Clennin, Marsha Dowda, Natalie Colabianchi, Russell R. Pate Feb 2018

Stepping It Up: Walking Behaviors In Children Transitioning From 5th To 7th Grade, Sharon E. Taverno Ross, Morgan N. Clennin, Marsha Dowda, Natalie Colabianchi, Russell R. Pate

Faculty Publications

The purpose of this study was to (1) describe children’s walking behaviors in 5th to 7th grade and change over time and (2) examine associations between walking behaviors and Walk Score®. Participants consisted of n = 586 students from the Transitions and Activity Changes in Kids (TRACK) Study. Children reported any walking behavior (e.g., exercise and transportation) over the past five days. Walk Score was calculated based on children’s home address. Descriptive statistics summarized walking behaviors by gender and time, and repeated measure mixed models examined the relationship between walking behaviors and Walk Score. Approximately 46.8% and ...


Introducing Statistical Persistence Decay – A Quantification Of Stride-To-Stride Time Interval Dependency In Human Gait, P. C. Raffalt, J. M. Yentes Jan 2018

Introducing Statistical Persistence Decay – A Quantification Of Stride-To-Stride Time Interval Dependency In Human Gait, P. C. Raffalt, J. M. Yentes

Journal Articles

Stride-to-stride time intervals during human walking are characterised by predictability and statistical persistence quantified by sample entropy (SaEn) and detrended fluctuation analysis (DFA) which indicates a time dependency in the gait pattern. However, neither analyses quantify time dependency in a physical or physiological interpretable time scale. Recently, entropic half-life (ENT½) has been introduced as a measure of the time dependency on an interpretable time scale. A novel measure of time dependency, based on DFA, statistical persistence decay (SPD), was introduced. The present study applied SaEn, DFA, ENT½, and SPD in known theoretical signals (periodic, chaotic, and random) and stride-to-stride time ...


Development And Reliability Off A Streetscape Observation Instrument For International Use: Maps-Global, Kelli Cain, Carrie M. Geremia, Terry Conway, Lawrence Frank, James Chapman, Eric H. Fox, Anna Timperio, Jenny Veitch, Delfien Van Dyck, Hannah Verhoeven, Rodrigo Reis, Alexande Augusto, Ester Cerin, Robin Mellecker, Ana Queralt, Javier Molina-Garcia, Jim Sallis Jan 2018

Development And Reliability Off A Streetscape Observation Instrument For International Use: Maps-Global, Kelli Cain, Carrie M. Geremia, Terry Conway, Lawrence Frank, James Chapman, Eric H. Fox, Anna Timperio, Jenny Veitch, Delfien Van Dyck, Hannah Verhoeven, Rodrigo Reis, Alexande Augusto, Ester Cerin, Robin Mellecker, Ana Queralt, Javier Molina-Garcia, Jim Sallis

Faculty of Health Sciences Publications

Background: Relationships between several built environment factors and physical activity and walking behavior are well established, but internationally-comparable built environment measures are lacking. The Microscale Audit of Pedestrian Streetscapes (MAPS)-Global is an observational measure of detailed streetscape features relevant to physical activity that was developed for international use. This study examined the inter-observer reliability of the instrument in five countries. Methods: MAPS-Global was developed by compiling concepts and items from eight environmental measures relevant to walking and bicycling. Inter-rater reliability data were collected in neighborhoods selected to vary on geographic information system (GIS)-derived macro-level walkability in five countries ...


Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro Sep 2017

Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro

All Dissertations, Theses, and Capstone Projects

With walking as ontological shifter I pursue an alternative to the dominant modernist episteme that offers either/or onto-epistemologies of opposition and their reifying engagements. I propose this type of walking is an intentional turning towards a set of radical positions that, as integrative aesthetic and therapeutic practice, brings multiplicity and synchronicity to experience and being in an expanded sociality. This practice facilitates the conditions of possibility for recurring points of contact between the interiority perceived as ‘body’ and the exteriority perceived as ‘world.’ While making evident the self’s at once incoherence with it-self, it opens to a space ...


The Effects Of An Acute Bout Of Exercise On Hunger Hormones In Individuals At Risk For Type 2 Diabetes, Sydney Spoon May 2017

The Effects Of An Acute Bout Of Exercise On Hunger Hormones In Individuals At Risk For Type 2 Diabetes, Sydney Spoon

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Hunger hormone levels are typically dysregulated in obese and diabetic

populations, however; postprandial exercise has been shown to influence hunger hormone levels. Purpose: To determine if hunger hormones including acylated ghrelin and GLP-1 levels are altered in response to an acute bout (15 minutes) of walking in individuals at risk for type 2 diabetes mellitus (T2DM).

Methods: Ten subjects at risk for prediabetes (fasting blood glucose 100–125mg/dL) participated in this randomized crossover design trial. Subjects arrived at the laboratory following an overnight fast and underwent one of two conditions: 1) Test meal with no walking (CON) or ...


A Comparative Evaluation Of Gait Between Children With Autism And Typically Developing Matched Controls, Janet S. Dufek, Jeffrey D. Eggleston, John R. Harry, Robbin Hickman Jan 2017

A Comparative Evaluation Of Gait Between Children With Autism And Typically Developing Matched Controls, Janet S. Dufek, Jeffrey D. Eggleston, John R. Harry, Robbin Hickman

Integrated Health Sciences Faculty Publications

Anecdotal reports suggest children with autism spectrum disorder (ASD) ambulate differently than peers with typical development (TD). Little empirical evidence supports these reports. Children with ASD exhibit delayed motor skills, and it is important to determine whether or not motor movement deficits exist during walking. The purpose of the study was to perform a comprehensive lower-extremity gait analysis between children (aged 5–12 years) with ASD and age- and gender-matched-samples with TD. Gait parameters were normalized to 101 data points and the gait cycle was divided into seven sub-phases. The Model Statistic procedure was used to test for statistical significance ...


Built Environmental Correlates Of Older Adults' Total Physical Activity And Walking: A Systematic Review And Meta-Analysis, David W. Barnett, Anthony Barnett, Andrea Nathan, Jelle Van Cauwenberg, Ester Cerin Jan 2017

Built Environmental Correlates Of Older Adults' Total Physical Activity And Walking: A Systematic Review And Meta-Analysis, David W. Barnett, Anthony Barnett, Andrea Nathan, Jelle Van Cauwenberg, Ester Cerin

Faculty of Health Sciences Publications

Background: Identifying attributes of the built environment associated with health-enhancing levels of physical activity (PA) in older adults (≥65 years old) has the potential to inform interventions supporting healthy and active ageing. The aim of this study was to first systematically review and quantify findings on built environmental correlates of older adults' PA, and second, investigate differences by type of PA and environmental attribute measurement. Methods: One hundred articles from peer-reviewed and grey literature examining built environmentalattributes related to total PA met inclusion criteria and relevant information was extracted. Findings were meta-analysed and weighted by article quality and sample size ...


The Acute Effect Of Walking On Ultrasound Measurements From The Achilles Insight Ultrasonometer In College-Aged Individuals, Kristin J. Heumann, Jacob Cimolino, Jeremy R. Hawkins, Robert W. Pettitt, Steven Ross Murray Oct 2016

The Acute Effect Of Walking On Ultrasound Measurements From The Achilles Insight Ultrasonometer In College-Aged Individuals, Kristin J. Heumann, Jacob Cimolino, Jeremy R. Hawkins, Robert W. Pettitt, Steven Ross Murray

International Journal of Exercise Science

International Journal of Exercise Science 9(4): 491-496, 2016. The Achilles InSight bone ultrasonometer is a portable ultrasound device for quantitatively measuring bone composition both safely and inexpensively via the calcaneus. The effect of acute, brisk walking as a possible source of error on the reliability of quantitative ultrasound (QUS) measurements was investigated. Forty-seven participants (17 women, 30 men; age M ± SD = 20.44 ± 1.16) had their calcaneus measured with the Achilles InSight both before and after a 15-min bout of walking at (5.63 km·h-1 (3.5 mph). The Achilles InSight was deemed reliable via a test-and-retest ...


Sagittal Plane Gait Kinematics In Individuals With Chronic Ankle Instability, Matthew C. Hoch, David R. Mullineaux, Kyoungkyu Jeon, Patrick O. Mckeon Sep 2016

Sagittal Plane Gait Kinematics In Individuals With Chronic Ankle Instability, Matthew C. Hoch, David R. Mullineaux, Kyoungkyu Jeon, Patrick O. Mckeon

Rehabilitation Sciences Faculty Publications

Single joint kinematic alterations have been identified during gait in those with chronic ankle instability (CAI). The purpose of this study was to compare sagittal plane hip, knee, and ankle kinematics during walking in participants with and without CAI. Twelve individuals with CAI and 12 healthy individuals walked on a treadmill at 1.5 m/s. Three-dimensional kinematics were analyzed using mean ensemble curves and independent t tests. Participants with CAI demonstrated less lower extremity flexion during the absorption phase of stance and the limb placement phase of swing, which may have implications for limb placement at initial contact.


Identifying Gait Deficits In Stroke Patients Using Inertial Sensors, Lauren Benson Aug 2016

Identifying Gait Deficits In Stroke Patients Using Inertial Sensors, Lauren Benson

Theses and Dissertations

Falls remain a significant problem for stroke patients. Tripping, the main cause of falls, occurs when there is insufficient clearance between the foot and ground. Based on an individual’s gait deficits, different joint angles and coordination patterns are necessary to achieve adequate foot clearance during walking. However, gait deficits are typically only quantified in a research or clinical setting, and it would be helpful to use wearable devices – such as accelerometers – to quantify gait disorders in real-world situations. Therefore, the objective of this project was to understand gait characteristics that influence the risk of tripping, and to detect these ...


Ambulation Speed And Corresponding Mechanics Are Associated With Changes In Serum Cartilage Oligomeric Matrix Protein, W. Matt Denning, Michael Becker Pardo, Jason G. Winward, Iain Hunter, Sarah T. Ridge, J. Ty Hopkins, C. Shane Reese, Allen C. Parcell, Matthew K. Seeley Feb 2016

Ambulation Speed And Corresponding Mechanics Are Associated With Changes In Serum Cartilage Oligomeric Matrix Protein, W. Matt Denning, Michael Becker Pardo, Jason G. Winward, Iain Hunter, Sarah T. Ridge, J. Ty Hopkins, C. Shane Reese, Allen C. Parcell, Matthew K. Seeley

Faculty Publications

Because serum cartilage oligomeric matrix protein (COMP) has been used to reflect articular cartilage condition, we aimed to identify walking and running mechanics that are associated with changes in serum COMP. Eighteen subjects (9 male, 9 female; age = 23 ± 2 yrs.; mass = 68.3 ± 9.6 kg; height = 1.70 ± 0.08 m) completed 4000 steps on an instrumented treadmill on three separate days. Each day corresponded to a different ambulation speed: slow (preferred walking speed), medium (+50% of slow), and fast (+100% of slow). Synchronized ground reaction force and video data were collected to evaluate walking mechanics. Blood samples ...


The Effects Of External Focus Of Attention Exercise Rehabilitation On Dual Task Walking In Parkinson's Disease, Eric N. Beck Jan 2016

The Effects Of External Focus Of Attention Exercise Rehabilitation On Dual Task Walking In Parkinson's Disease, Eric N. Beck

Theses and Dissertations (Comprehensive)

Parkinson’s disease impairs control of well-learned movements, and therefore, individuals with Parkinson’s disease are forced to walk with greater conscious control. This causes difficulties while walking and completing a secondary task simultaneously (dual tasking), in that distractions from conscious control of walking increase the risk of falls and injury. Although, attention-based exercise may be a potential avenue to decrease the demands associated with walking in Parkinson’s disease. For example, an external focus of attention (on manipulated objects) has been found to recruit the networks that are important for walking with little conscious control (automatic control networks). In ...


Can Air Pollution Negate The Health Benefits Of Cycling And Walking?, Marko Tainio, Audrey J. De Nazelle, Thomas Götschi, Sonja Kahlmeier, David Rojas-Rueda, Mark J. Nieuwenhuijsen, Thiago Hérick De Sá, Paul Kelly, James Woodcock Jan 2016

Can Air Pollution Negate The Health Benefits Of Cycling And Walking?, Marko Tainio, Audrey J. De Nazelle, Thomas Götschi, Sonja Kahlmeier, David Rojas-Rueda, Mark J. Nieuwenhuijsen, Thiago Hérick De Sá, Paul Kelly, James Woodcock

Faculty of Health Sciences Publications

Active travel (cycling, walking) is beneficial for the health due to increased physical activity (PA). However, active travel may increase the intake of air pollution, leading to negative health consequences. We examined the risk–benefit balance between active travel related PA and exposure to air pollution across a range of air pollution and PA scenarios. The health effects of active travel and air pollution were estimated through changes in all-cause mortality for different levels of active travel and air pollution. Air pollution exposure was estimated through changes in background concentrations of fine particulate matter (PM2.5), ranging from 5 to ...


Associations Between The Neighbourhood Environment Characteristics And Physical Activity In Older Adults With Specific Types Of Chronic Conditions: The Alecs Cross-Sectional Study, Anthony Barnett, Ester Cerin, Casper J.P. Zhang, Cindy H.P. Sit, Janice M. Johnston, Martin C. Cheung, Ruby S.Y. Lee Jan 2016

Associations Between The Neighbourhood Environment Characteristics And Physical Activity In Older Adults With Specific Types Of Chronic Conditions: The Alecs Cross-Sectional Study, Anthony Barnett, Ester Cerin, Casper J.P. Zhang, Cindy H.P. Sit, Janice M. Johnston, Martin C. Cheung, Ruby S.Y. Lee

Faculty of Health Sciences Publications

Background: Neighbourhood characteristics may influence physical activity (PA), which has positive effects on the health of older adults. Older adults with chronic conditions are less active and possibly more affected by environmental factors than their peers. Understanding neighbourhood characteristics associated with PA specific to older adults with chronic conditions is currently lacking. This cross-sectional study aimed to assess the associations between the neighbourhood environment and various forms of PA in older adults with and without visual impairment, hearing impairment, musculoskeletal disease and/or genitourinary disease. Methods: Neighbourhood environment and PA data were collected in Hong Kong older adults (N = 909 ...


Comparing Functional Motor Control And Gait Parameters In Children With Autism To Those Of Age-Matched Peers Who Are Typically Developing, Patricia Stevenson, Samantha Novotny, Jillian May, Christopher Ancell May 2015

Comparing Functional Motor Control And Gait Parameters In Children With Autism To Those Of Age-Matched Peers Who Are Typically Developing, Patricia Stevenson, Samantha Novotny, Jillian May, Christopher Ancell

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to compare motor performance of children with Autism Spectrum Disorder (ASD) to that of age-matched peers who are typically developing (TD) on motor control tasks plus symmetry and variability of gait parameters across four walking conditions. A sample of convenience of children with ASD (n=6) and peers who are TD (n=6) were recruited. Motor control was assessed using initiation and completion times on the Timed Up and Go (TUG) test. Gait parameters were collected using a computerized walkway under four trial conditions: 1) walking at self-selected velocity (SSV); 2) walking during a ...


Cognitive And Typing Outcomes Measured Simultaneously With Slow Treadmill Walking Or Sitting: Implications For Treadmill Desks, James D. Lecheminant, Michael D. Larson, Kyle Hill, Kaylie Carbine, Travis Masterson, Ed Christenson Apr 2015

Cognitive And Typing Outcomes Measured Simultaneously With Slow Treadmill Walking Or Sitting: Implications For Treadmill Desks, James D. Lecheminant, Michael D. Larson, Kyle Hill, Kaylie Carbine, Travis Masterson, Ed Christenson

Faculty Publications

Purpose

This study compared cognitive (attention, learning, and memory) and typing outcomes during slow treadmill walking or sitting. Seventy-five healthy individuals were randomly assigned to a treadmill walking group (n=37; 23 female) or sitting group (n=38; 17 female).

Methods

The treadmill walking group completed a series of tests while walking at 1.5 mph. The sitting group performed the same tests while sitting at a standard desk. Tests performed by both groups included: the Rey Auditory Verbal Learning Test and a modified version of the Paced Auditory Serial Attention Test. In addition, typing performance was evaluated.

Results

Participants ...


The Influence Of Push-Off Timing In A Robotic Ankle-Foot Prosthesis On The Energetics And Mechanics Of Walking, Philippe Malcolm, Robert E. Quesada, Joshua M. Caputo, Steven H. Collins Feb 2015

The Influence Of Push-Off Timing In A Robotic Ankle-Foot Prosthesis On The Energetics And Mechanics Of Walking, Philippe Malcolm, Robert E. Quesada, Joshua M. Caputo, Steven H. Collins

Journal Articles

Background

Robotic ankle-foot prostheses that provide net positive push-off work can reduce the metabolic rate of walking for individuals with amputation, but benefits might be sensitive to push-off timing. Simple walking models suggest that preemptive push-off reduces center-of-mass work, possibly reducing metabolic rate. Studies with bilateral exoskeletons have found that push-off beginning before leading leg contact minimizes metabolic rate, but timing was not varied independently from push-off work, and the effects of push-off timing on biomechanics were not measured. Most lower-limb amputations are unilateral, which could also affect optimal timing. The goal of this study was to vary the timing ...


Pre-Prandial Vinegar Ingestion Improves Two-Hour Glucose Control In Older, Type Ii Diabetics More Than Post-Prandial Walking, Sarah J. Taylor, Matthew J. Garver, Anna E. Ciufo, Taylor G. Flowers, Chase M. Harbach, Austin A. Ray, Cory M. Scheadler Feb 2015

Pre-Prandial Vinegar Ingestion Improves Two-Hour Glucose Control In Older, Type Ii Diabetics More Than Post-Prandial Walking, Sarah J. Taylor, Matthew J. Garver, Anna E. Ciufo, Taylor G. Flowers, Chase M. Harbach, Austin A. Ray, Cory M. Scheadler

International Journal of Exercise Science: Conference Proceedings

Background: Exercise engagement benefits diabetic patients through an insulin-like effect on muscle. Literature indicates that vinegar consumption may lower blood glucose levels. It is not currently clarified whether a relative amount of vinegar ingestion or a walking bout is more effective at controlling glucose in older, Type II diabetics during the acute phase following a meal. Purpose: The aim was to directly compare the impact of preferred-pace walking (15 min, postprandial) versus ingestion of a relative quantity of vinegar (0.3 g/kg) on two-hour glucose control. Methods: The two arms of the trial were completed in a randomized, crossover ...


Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev Jan 2015

Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev

Graduate Theses and Dissertations

Muscular strength and power generating ability decline with advancing age. Older adults adapt their lower limb motor patterns to cope with these declines in muscle function. When mechanical demands approach limits of lower limb muscular capacity, motor patterns must be adapted to produce a desired movement. The term “motor pattern” is used to broadly represent the kinematic and kinetic profile of a person accomplishing a given task. Generally, these adaptations involve higher reliance on stronger proximal muscles to compensate for limitations or weakness of distal muscles. Three studies were conducted to examine factors affecting differences between older and young adults ...


Physical Activity Through Sustainable Transport Approaches (Pasta): Protocol For A Multi-Centre, Longitudinal Study, Evi Dons, Thomas Götschi, Mark J. Nieuwenhuijsen, Audrey De Nazelle, Esther Anaya, Ione Avila-Palencia, Christian Brand, Tom Cole-Hunter, Mailin Gaupp-Berghausen, Sonja Kahlmeier, Michelle Laeremans, Natalie Mueller, Juan Pablo Orjuela, Elisabeth Raser, David Rojas-Rueda, Arnout Standaert, Erik Stigell, Tina Uhlmann, Regine Gerike, Luc Int Panis Jan 2015

Physical Activity Through Sustainable Transport Approaches (Pasta): Protocol For A Multi-Centre, Longitudinal Study, Evi Dons, Thomas Götschi, Mark J. Nieuwenhuijsen, Audrey De Nazelle, Esther Anaya, Ione Avila-Palencia, Christian Brand, Tom Cole-Hunter, Mailin Gaupp-Berghausen, Sonja Kahlmeier, Michelle Laeremans, Natalie Mueller, Juan Pablo Orjuela, Elisabeth Raser, David Rojas-Rueda, Arnout Standaert, Erik Stigell, Tina Uhlmann, Regine Gerike, Luc Int Panis

Faculty of Health Sciences Publications

Background: Physical inactivity is one of the leading risk factors for non-communicable diseases, yet many are not sufficiently active. The Physical Activity through Sustainable Transport Approaches (PASTA) study aims to better understand active mobility (walking and cycling for transport solely or in combination with public transport) as an innovative approach to integrate physical activity into individuals’ everyday lives. The PASTA study will collect data of multiple cities in a longitudinal cohort design to study correlates of active mobility, its effect on overall physical activity, crash risk and exposure to traffic-related air pollution. Methods/Design: A set of online questionnaires incorporating ...


Knoxville Moves: Log-In And Get Mobile, Courtney Marie Monroe Dec 2014

Knoxville Moves: Log-In And Get Mobile, Courtney Marie Monroe

Doctoral Dissertations

This dissertation evaluated 1) the efficacy of a course-based Internet-technology intervention rooted in social cognitive theory (SCT) for increasing step counts in university faculty and staff, and 2) the effect of online social support tools on step counts among adults using a randomized control trial.

Thirty-six sedentary/insufficiently active university faculty and staff participated in an eight-week, Internet-delivered walking intervention. They received an Omron HJ-720ITC pedometer, personal step goals, and access to a Blackboard LearnTM website comprised of SCTbased features. Outcomes included daily steps, social support, self-regulation, self-efficacy, and outcome expectations. Participants significantly increased their average daily steps (p < 0.001) between baseline and week 1 by 1800. A similar increase in daily steps was observed between baseline and all other intervention weeks (p < 0.001). Social support and self-regulation significantly improved (p < 0.001). These findings helped inform the design of the second study.

In ...