Biomedical subjects

Gordon R Chalmers

Publications and source records attributed to Gordon R Chalmers.

2 recordsLinked to original sources

PubMed2005

Exercise information resources on the World Wide Web.

Health professionals and members of the public are often interested in locating exercise information on the World Wide Web (the Web). There is a large amount of information available on the Web; however, the challenge for all people is to identify the high quality information that can be depended upon. Much of the quality exercise information on the Web is hidden within sites of reputable organizations concerned with exercise and health. This article examines several categories of commonly needed exercise related information. For each category, a few high quality sources of exercise information are listed. Combined, these Web sites provide an excellent and extensive body of knowledge for a person who is not experienced with exercise and wants to get started learning, or for a person with a moderate level of experience and knowledge who wants to learn more.

Exercise↗

PubMed2002

Soleus H-reflex gain in healthy elderly and young adults when lying, standing, and balancing.

Soleus Hoffman-reflex (H-reflex) gain was compared at the same background level of electromyographic activity across lying, natural standing, and tandem stance postures, in 12 young and 16 elderly adults. When compared to a lying posture, young adults significantly depressed soleus H-reflex gain when in a natural standing (19% decrease) and a tandem stance position (30% decrease; p <.0125 for both positions). For elderly adults, there was no significant decrease in H-reflex gain while standing naturally, but there was a significant 28% decrease when performing tandem stance (p <.0125). The data indicate that, although the mild motor control challenge of natural standing does not induce a decrease in soleus H-reflex gain in the elderly adults, as it does in young adults, in the more difficult task of tandem stance, soleus H-reflex gain is significantly decreased in both young and elderly adults.

Adult↗