ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701899

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701900

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701901

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

In brief: Diarrhea is a common complaint of recreational and competitive runners. To test the hypothesis that running stimulates gut motility through a hormonal mechanism, we studied the effects of a 30-km run on plasma concentrations of gastrointestinal (GI) regulatory peptides in seven male marathon runners. Concentrations of insulin, enteroglucagon, neurotensin, and gastric inhibitory polypeptide did not change, but gastrin, motilin, somatostatin, pancreatic glucagon, pancreatic polypeptide, and vasoactive intestinal polypeptide increased. Epinephrine and norepinephrine also increased, which may partly explain the concentration changes. The increase in motilin was sufficient to stimulate gastric emptying and colonic motility, but further research is needed to determine whether these hormonal changes affect Gl function.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701902

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

In brief: The role of tennis in maintaining cardiovascular fitness has never been clearly evaluated. Therefore, we studied 28 intermediate male players between the ages of 45 and 72 who played tennis six to ten hours per week. The subjects were monitored before, during, and after singles tennis to determine the effect on heart rate and cardiac rhythm. Later 13 of the participants were tested on a treadmill to examine their oxygen consumption and physical condition. During an hour of tennis play, heart rate was maintained at a steady-state level between 60% and 100% of age-predicted maximum. These subjects also demonstrated fitness levels similar to those of persons who have run 2 1/2 hours per week for ten years.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701903

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

In brief: By following these guidelines, physicians can effectively advise weight-and food-obsessed athletes how to stabilize their eating habits into an ordered routine. The physician, preferably with the assistance of a registered dietitian, should obtain a diet history from the athlete, measure percent body fat, estimate daily caloric needs, and design a normal eating pattern. After the athlete has stabilized eating patterns, a weight-reduction plan should be designed. By emphasizing that eating correctly will improve athletic performance, the physician can help athletes overcome the unhealthy cycle of starving and binging.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701904

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

Most swimming pool-related deaths and injuries occur in residential pools, yet pool owners are often unaware of the hazards that may be found in their own backyard. Accident prevention depends on educating owners about proper supervision and security.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701905

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701906

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

Baseball has been old-fashioned in the care of its players. But that trend seems to be shifting with the application of techniques such as hypnotism, physiological testing, and biomechanics.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701907

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor

摘要:

The Rockies used to rest between ski seasons, but now they are filled with visitors who are kayaking, ballooning, hiking, fishing, and horseback riding. And festivals ranging from bluegrass to opera fill the months until the snow flies.

ISSN:0091-3847    

DOI:10.1080/00913847.1984.11701908

出版商:Taylor&Francis    

年代:1984

数据来源: Taylor