title: Tai Chi Chuan training to enhance microcirculatory function in healthy elderly men.
abstract: OBJECTIVE
  To evaluate cutaneous microcirculatory function in geriatric Tai Chi Chuan (TCC) practitioners.
  
  
  METHODS
  Case-control study.
  
  
  METHODS
  Community setting.
  
  
  METHODS
  Ten elderly male TCC practitioners (mean age, 69.9 +/- 1.5 yr) and 10 sedentary men with matched age and body size (mean age, 67.0 +/- 1.0 yr).
  
  
  METHODS
  The TCC group had practiced TCC for 11.2 +/- 3.4 years (mean +/- standard error of the mean), with an exercise frequency of 5.1 +/- 1.8 times weekly. Each session included 20 minutes of warm-up, 24 minutes of TCC practice, and 10 minutes of cool down.
  
  
  METHODS
  A graded exercise test with gas analysis was conducted on a bicycle ergometer for each subject. Skin blood flow (SkBF), cutaneous vascular conductance, and skin temperature were measured at rest and during exercise testing. Plasma nitric oxide metabolite was analyzed before and immediately after exercise.
  
  
  RESULTS
  The TCC group had a 34% higher VO(2)peak than the control group; it also had a higher SkBF, cutaneous vascular conductance, and skin temperature than the control group at rest and during exercise; and it also had a higher level of plasma nitric oxide metabolite than the sedentary group at rest and after exercise.
  
  
  CONCLUSIONS
  Older TCC practitioners had higher cutaneous microcirculatory function during exercise than did their sedentary counterparts. Moreover, this change may be partially mediated by enhancement of nitric oxide release.
authors.affiliation: Department of Physical Therapy, Chang Gung University, Taipei, Taiwan. s5492@mail.cgu.edu.tw
authors.forename: J S
authors.initials: JS
authors.lastname: Wang
authors.forename: C
authors.initials: C
authors.lastname: Lan
authors.forename: M K
authors.initials: MK
authors.lastname: Wong
mesh_terms: D000368:Aged / Q000502:physiology*; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D016022:Case-Control Studies; D005080:Exercise Test; D005081:Exercise Therapy / Q000379:methods* / Q000592:standards; D015577:Geriatric Assessment; D006801:Humans; D017078:Laser-Doppler Flowmetry; D008019:Life Style; D008297:Male; D016139:Martial Arts / Q000502:physiology*; D008833:Microcirculation / Q000502:physiology*; D009569:Nitric Oxide / Q000378:metabolism; D010101:Oxygen Consumption; D012146:Rest / Q000502:physiology; D012867:Skin / Q000098:blood supply*; D012881:Skin Temperature / Q000502:physiology; D011795:Surveys and Questionnaires
chemical_list: D009569:Nitric Oxide