Ralph S Welsh

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PURPOSE This study was designed to examine the effects of carbohydrate-electrolyte ingestion on physical and mental function associated with the performance of intermittent high-intensity (IHI) exercise similar to many common competitive sporting events. METHODS Physically active men (N = 5) and women (N = 5), experienced in competitive soccer or(More)
Fatigue from voluntary muscular effort is a complex phenomenon involving the central nervous system (CNS) and muscle. An understanding of the mechanisms within muscle that cause fatigue has led to the development of nutritional strategies to enhance performance. Until recently, little was known about CNS mechanisms of fatigue, even though the inability or(More)
Two studies compared comprehension of televised stories by 7- to 12-year-old boys with attention deficit/hyperactivity disorder (ADHD) and nonreferred comparison boys. Boys watched one show with toys present and one with toys absent. Visual attention was continuously recorded, and recall was tested after each show. Across studies, visual attention was high(More)
PURPOSE This study was designed to examine the effect of carbohydrate (CHO) feedings on physical and central nervous system (CNS) function during intermittent high-intensity exercise with physical demands similar to those of team sports such as basketball. METHODS Twenty active men (N = 10) and women (N = 10), with experience competing in team sports,(More)
The cross-training (XT) hypothesis suggests that despite the principle of specificity of training, athletes may improve performance in one mode of exercise by training using another mode. To test this hypothesis we studied 30 well-trained individuals (10 men, 20 women) in a randomized longitudinal trail. Subjects were evaluated before and after 8 weeks of(More)
Experimental support for the hypothesized benefits of BCAA supplements on endurance performance is limited. However, it is theorized that the benefits may be enhanced if 1) BCAA are taken along with a pre-event carbohydrate meal as well as during exercise, and 2) the exercise is intermittent in nature. This study tested the effects of ingesting carbohydrate(More)
Investigated visual attention to and story comprehension of televised stories in 4- to 6-year-old children with attention deficit hyperactivity disorder (ADHD) and comparison children. Half of the children in each group watched the program with toys in the room, and the other half watched without toys. Visual attention to the television was recorded, and(More)
AIM To examine the impact of two different lifestyle programmes on cardiovascular health and glycaemic control among people with type 2 diabetes. METHODS A two-phase 24-week randomized trial. During the first phase, participants were to increase daily steps using a pedometer. At week 12, participants were randomly allocated to either an enhanced lifestyle(More)
PURPOSE This study was designed to test the hypothesis that addition of chromium (Cr) to a carbohydrate-electrolyte drink would enhance the reported benefits of carbohydrate on exercise capacity during intermittent high-intensity shuttle running. METHODS Eight physically active men performed 3 exercise trials while ingesting 6% carbohydrate-electrolyte(More)
UNLABELLED Physical activity can have a positive impact on health disparities among African Americans. OBJECTIVE In this study, we assessed physical activity behaviors and correlates of students of a Historically Black College. METHODS In September 2004, an online survey and pedometers were used to measure physical activity behavior and correlates. (More)