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Full-Text Articles in Life Sciences

Gait Complexity Is Acutely Restored In Older Adults When Walking To A Fractal-Like Visual Stimulus, Joao R. Vaz, Brian Knarr, Nicholas Stergiou Oct 2020

Gait Complexity Is Acutely Restored In Older Adults When Walking To A Fractal-Like Visual Stimulus, Joao R. Vaz, Brian Knarr, Nicholas Stergiou

Journal Articles

Typically, gait rehabilitation uses an invariant stimulus paradigm to improve gait related deficiencies. However, this approach may not be optimal as it does not incorporate gait complexity, or in more precise words, the variable fractal-like nature found in the gait fluctuations commonly observed in healthy populations. Aging which also affects gait complexity, resulting in a loss of adaptability to the surrounding environment, could benefit from gait rehabilitation that incorporates a variable fractal-like stimulus paradigm. Therefore, the present study aimed to investigate the effect of a variable fractal-like visual stimulus on the stride-to-stride fluctuations of older adults during overground walking. Additionally, …


Aging, Gait Variability, And Adaptability, Collin Douglas Bowersock Aug 2020

Aging, Gait Variability, And Adaptability, Collin Douglas Bowersock

Health Services Research Dissertations

The purpose of this work was to study the relationships between age, measures of gait variability, and locomotor adaptability. Measures of gait variability are used to identify maladapted locomotor behavior, motor disease, and risk of falls. The first aim was to determine the relationships between age and measures of gait variability. Thirty-four participants (23-71 years old) walked on a treadmill for 6 minutes at their preferred speed. Variability of stride times and lengths was computed via linear measures (standard deviation and coefficient of variation) and nonlinear measures (sample entropy and detrended fluctuation analysis). Movement trajectory variability of the dominant knee …


Assessing The Temporal Organization Of Walking Variability: A Systematic Review And Consensus Guidelines On Detrended Fluctuation Analysis, Deepak K. Ravi, Vivien Marmelat, William R. Taylor, Karl M. Newell, Nicholas Stergiou, Navrag B. Singh Jun 2020

Assessing The Temporal Organization Of Walking Variability: A Systematic Review And Consensus Guidelines On Detrended Fluctuation Analysis, Deepak K. Ravi, Vivien Marmelat, William R. Taylor, Karl M. Newell, Nicholas Stergiou, Navrag B. Singh

Journal Articles

Human physiological signals are inherently rhythmic and have a hallmark feature in that even distant intrasignal measurements are related to each other. This relationship is termed long-range correlation and has been recognized as an indicator of the optimal state of the observed physiological systems, among which the locomotor system. Loss of long-range correlations has been found as a result of aging as well as disease, which can be evaluated with detrended fluctuation analysis (DFA). Recently, DFA and the scaling exponent α have been employed for understanding the degeneration of temporal regulation of human walking biorhythms in, for example, Parkinson disease …


Biomechanics In The 4haie Study: Air Pollution And Musculoskeletal Health - An Update, Daniel Jandacka, Jaroslav Uchityil, David Zahradník, Roman Farana, Dominik Villimek, Jiri Skypala, Jan Urbaczka, Jan Plesek, Adam Motyka, Denisa Blaschova, Gabriela Beinhauerova, Marketa Rygelová, Pavel Brtva, Zuzana Golembiovska, Klara Balazova, Jan Malus, Veronika Horka, Julia F. Silvernail, Gareth Irwin, Miika T. Nieminen, Victor Casula, Vlado Juras, Milos Golian, Steriani Elavsky, Lenka Knapova, Radim Sram, Joseph Hamill Jan 2020

Biomechanics In The 4haie Study: Air Pollution And Musculoskeletal Health - An Update, Daniel Jandacka, Jaroslav Uchityil, David Zahradník, Roman Farana, Dominik Villimek, Jiri Skypala, Jan Urbaczka, Jan Plesek, Adam Motyka, Denisa Blaschova, Gabriela Beinhauerova, Marketa Rygelová, Pavel Brtva, Zuzana Golembiovska, Klara Balazova, Jan Malus, Veronika Horka, Julia F. Silvernail, Gareth Irwin, Miika T. Nieminen, Victor Casula, Vlado Juras, Milos Golian, Steriani Elavsky, Lenka Knapova, Radim Sram, Joseph Hamill

Kinesiology and Nutrition Sciences Faculty Publications

The overall purpose of the 4HAIE study was to assess the influence of the interaction between air pollution and biomechanical, physiological and psychosocial factors on the incidence of injuries, health and well-being. A total of 1,500 active runners and inactive controls aged 18-65 will be recruited. Herein, we describe the biomechanical study design with data examples to investigate musculoskeletal and neuro-mechanics health in different air quality regions.