Medicine and Health Sciences Commons^™

Central Modulation Of Postural Control In Response To Task Demands And Fatigue In Individuals With And Without A History Of Low Back Pain, Jolene Kay Soliman, Jo Armour Smith

Student Scholar Symposium Abstracts and Posters

Background During voluntary limb movement, feedforward postural activation of the trunk and hip musculature occurs to maintain postural stability. This is called an anticipatory postural adjustment (APA). Onset of trunk muscle APAs is delayed in symptomatic individuals with persistent low back pain (LBP). It is not clear how spatial APA organization is affected, or if adaptations in APAs persist between symptomatic episodes. We used two versions of a supine active leg raise task to examine central modulation of APAs. One version of the task, the supported leg raise (SLR) does not elicit trunk/hip APAs. The other, the unsupported leg raise …

The Dynamics Of Stress And Fatigue Across Menopause: Attractors, Coupling, And Resilience, Lisa Taylor-Swanson, Alexander E. Wong, David Pincus, Jonathan E. Butner, Jennifer Hahn-Holbrook, Mary Koithan, Kathryn Wann, Nancy F. Woods

Psychology Faculty Articles and Research

Objective:

The objective of this study was to evaluate the regulatory dynamics between stress and fatigue experienced by women during the menopausal transition (MT) and early postmenopause (EPM). Fatigue and perceived stress are commonly experienced by women during the MT and EPM. We sought to discover relationships between these symptoms and to employ these symptoms as possible markers for resilience.

Methods:

Participants were drawn from the longitudinal Seattle Midlife Women's Health Study. Eligible women completed questionnaires on 60+ occasions (annual health reports and monthly health diaries) (n = 56 women). The total number of observations across the sample was 4,224. …

Classifying Lower Extremity Muscle Fatigue During Walking Using Machine Learning And Inertial Sensors, Jian Zhang, Thurmon Lockhart, Rahul Soangra

Physical Therapy Faculty Articles and Research

Fatigue in lower extremity musculature is associated with decline in postural stability, motor performance and alters normal walking patterns in human subjects. Automated recognition of lower extremity muscle fatigue condition may be advantageous in early detection of fall and injury risks. Supervised machine learning methods such as Support Vector Machines (SVM) have been previously used for classifying healthy and pathological gait patterns and also for separating old and young gait patterns. In this study we explore the classification potential of SVM in recognition of gait patterns utilizing an inertial measurement unit associated with lower extremity muscular fatigue. Both kinematic and …