DLS measures Brownian motion and relates this to the size of the particles. Brownian motion is the random movement of particles due to the bombardment by the solvent molecules that surround them. The larger the particle or molecule, the slower the Brownian motion will be. Smaller particles are "kicked" further by the solvent molecules and move more rapidly. An accurately known temperature is ne...

[Purpose] The present study aimed to determine changes in muscle activity while moving on a treadmill at various speeds. [Subjects] The activities of the left vastus lateralis, vastus medialis, hip adductors, lateral head of gastrocnemius, medial head gastrocnemius, soleus, and tibialis anterior of 10 healthy male university students were analyzed. [Methods] University students walked, jogged, ...

OBJECTIVE To examine how "travel by walking" before and after school contributes to total physical activity of adolescent girls. DESIGN Cross-sectional sample. SETTING Thirty-six middle schools from Arizona, Maryland, Minnesota, Louisiana, California, and South Carolina participating in the Trial of Activity for Adolescent Girls (TAAG). PARTICIPANTS Seventeen hundred twenty-one sixth-grad...

BACKGROUND The extent to which dog walking promotes leisure-time physical activity (LTPA) remains unresolved. We describe the characteristics of people who walk their dog, and assess the impact on LTPA. METHODS Information on dog ownership, dog walking patterns, total walking activity and LTPA were assessed in the 2005 Michigan Behavioral Risk Factor Survey. Multiple logistic regression was u...

Methods Nineteen able-bodied subjects walked four different conditions (control, effusion, pain, and pain+effusion), with a week between each condition. We used previouslyused injury models of pain [1] and joint effusion [2] to the right side of the knee. The control condition consisted of no injection. For each condition, subjects completed three walking trials at three times: precondition (pr...

BACKGROUND AND PURPOSE Little is known about the effects of community-based walking programs in persons with chronic stroke. The purpose of this study was to determine the effects of aerobic (walking) training on functional status and health-related quality of life in stroke survivors. METHODS A single-blind randomized controlled trial was conducted. The intervention group (n=64) walked overg...

BACKGROUND Walking for exercise is a purposeful or structured activity that can be captured relatively easily in surveys focused on leisure time activity. In contrast, walking for transport is an incidental activity that is likely to be missed using these same assessment approaches. Therefore, the purpose of this analysis was to utilize 1997 Australian Bureau of Statistics (ABS) Time Use Survey...