Brain Dominance and Speed Achievement in Keyboarding

Students who want to compete successfully in today\u27s marketplace must be proficient in the skill of keyboarding. But not all students of keyboarding are able to achieve the high levels of proficiency in speed. This study investigates one possible explanation for this perplexing and frustrating occurrence--how brain dominance affects learning a motor skill such as keyboarding. The purpose of this study was to determine if there is a relationship between a student\u27s brain dominance preference and his/her ability to achieve speed in keyboarding. The Human Information Processing Survey, which determines brain dominance preference, was administered to high school students enrolled in a beginning keyboarding class. The results of the study showed that those students who exhibit right brain tendencies in cognitive processing were able to attain a higher average speed on three-minute timed writings. The study also contains practical recommendations for including right brain activities when teaching beginning keyboarding

Effects of Chromium Picolinate on Growth and Body Composition in the Rat.

Several human and animal studies of chromium (Cr) supplementation in the form of Cr picolinate (CrPic) have reported increases in lean body mass, often with concurrent body fat decreases. This 12-week study examined the effects of six dietary levels of CrPic (0, 75, 150, 300, 600, 1500 ppb Cr) upon the growth and body composition of the rat. Ninety male Harlan Sprague-Dawley outbred weanling rats arrived in three groups of 30 animals (referred to as Blocks 1, 2, and 3). Five animals from each block were assigned to each treatment, resulting in a 6 x 3 (treatment x block) Randomized Block Design. Body composition was assessed via dual emission X-ray absorptiometry (DEXA). Significant treatment X block interactions were found for fat weight (p = 0.01 and 0.06 at Weeks 5 and 10), percent body fat (p = 0.02 and 0.09 at Weeks 5 and 10), and body weight (p = 0.07 and 0.04 at Weeks 10 and 12). These interactions reflected decreases in body fat for Block 1 that corresponded with increasing CrPic levels. No treatment interactions or effects were seen for growth rate, lean body mass, or tissue weights, but most block effects were highly significant (p = 0.01), with Block 2 $\u3e$ Block 3 $\u3e$ Block 1. These significant block effects were further reflected in the glucose tolerance data, in which Block 1 had lower resting glucose levels than Block 2 (p = 0.07) and lower glycated hemoglobin levels than both Blocks 2 and 3 (p = 0.09). A significant treatment x block interaction (p = 0.01) for feed intake revealed a decrease for Blocks 1 and 2, but an increase for Block 3, at the highest CrPic level. However, only Block 1 experienced corresponding changes in body composition. Furthermore, except for the highest CrPic level, body fat reductions for Block 1 occurred without decreases in feed intake, implicating possible dietary-induced thermogenic effects of CrPic. Genetic differences could have accounted for some of the differential effects of CrPic supplementation upon the blocks of animals. Additionally, more stringent Cr-free conditions may be necessary for changes in growth rate to occur, and exercise may be an important stimulus for potentiating increases in lean body mass

Brain Dominance and Speed Achievement in Keyboarding

Students who want to compete successfully in today\u27s marketplace must be proficient in the skill of keyboarding. But not all students of keyboarding are able to achieve the high levels of proficiency in speed. This study investigates one possible explanation for this perplexing and frustrating occurrence--how brain dominance affects learning a motor skill such as keyboarding. The purpose of this study was to determine if there is a relationship between a student\u27s brain dominance preference and his/her ability to achieve speed in keyboarding. The Human Information Processing Survey, which determines brain dominance preference, was administered to high school students enrolled in a beginning keyboarding class. The results of the study showed that those students who exhibit right brain tendencies in cognitive processing were able to attain a higher average speed on three-minute timed writings. The study also contains practical recommendations for including right brain activities when teaching beginning keyboarding

Experiential discipleship : compassion changes through experiential learning

https://place.asburyseminary.edu/ecommonsatsdissertations/2580/thumbnail.jp

The Independent Spring 2009

Spring 2009/5769 issue of The official undergraduate newspaper of the Lander College for Women/The Anna Ruth & Mark Hasten School.https://touroscholar.touro.edu/archives_books/1082/thumbnail.jp

Nutrient Administration and Resistance Training

Skeletal muscle tissue is tightly regulated throughout our bodies by balancing its synthesis and breakdown. Many factors are known to exist that cause profound changes on the overall status of skeletal muscle, some of which include exercise, nutrition, hormonal influences and disease. Muscle hypertrophy results when protein synthesis is greater than protein breakdown. Resistance training is a popular form of exercise that has been shown to increase muscular strength and muscular hypertrophy. In general, resistance training causes a stimulation of protein synthesis as well as an increase in protein breakdown, resulting in a negative balance of protein. Providing nutrients, specifically amino acids, helps to stimulate protein synthesis and improve the overall net balance of protein. Strategies to increase the concentration and availability of amino acids after resistance exercise are of great interest and have been shown to effectively increase overall protein synthesis. [1-3] After exercise, providing carbohydrate has been shown to mildly stimulate protein synthesis while addition of free amino acids prior to and after exercise, specifically essential amino acids, causes a rapid pronounced increase in protein synthesis as well as protein balance.[1,3] Evidence exists for a dose-response relationship of infused amino acids while no specific regimen exists for optimal dosing upon ingestion. Ingestion of whole or intact protein sources (e.g., protein powders, meal-replacements) has been shown to cause similar improvements in protein balance after resistance exercise when compared to free amino acid supplements. Future research should seek to determine optimal dosing of ingested intact amino acids in addition to identifying the cellular mechanistic machinery (e.g. transcriptional and translational mechanisms) for causing the increase in protein synthesis

Insulin-like growth factor-I (IGF-I) and IGF binding protein-5 in Schwann cell differentiation

Schwann cells (SCs) are the myelin producing cells of the peripheral nervous system. During development, SCs cease proliferation and differentiate into either a myelin-forming or non-myelin forming mature phenotype. We are interested in the role of insulin-like growth factor-I (IGF-I) in SC development. We have shown previously SCs proliferate in response to IGF-I in vitro. In the current study, we investigated the role of IGF-I in SC differentiation. SC differentiation was determined by morphological criteria and expression of myelin proteins. Addition of 1 mM 8-bromo cyclic AMP (cAMP) or growth on Matrigel matrix decreased proliferation and induced differentiation of SCs. IGF-I enhanced both cAMP and Matrigel matrix-induced SC differentiation, as assessed by both morphological criteria and myelin gene expression. Cultured SCs also express IGF binding protein-5 (IGFBP-5), which can modulate the actions of IGF-I. We examined the expression of IGFBP-5 during SC differentiation. Both cAMP and Matrigel matrix treatment enhanced IGFBP-5 protein expression and cAMP increased IGFBP-5 gene expression five fold. These findings suggest IGF-I potentiates SC differentiation. The concomitant up-regulation of IGFBP-5 may play a role in targeting IGF-I to SCs and thus increase local IGF-I bioavailability. J. Cell. Physiol. 171:161–167, 1997. © 1997 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/34438/1/6_ftp.pd