| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 Department of Health and Human Performance, Iowa State University, Ames, IA, USA
* To whom correspondence should be addressed. E-mail: wfranke{at}iastate.edu.
Aging and chronic exercise training influence leg venous compliance. Venous compliance affects responses to an orthostatic stress; its effect on tolerance to maximal lower body negative pressure (LBNP) in the elderly is unknown. PURPOSE: To determine the influence of age and fitness, a surrogate measure of exercise training, on calf venous compliance and tolerance to maximal LBNP in men and women. METHODS: Forty participants, 10 young fit (YF, 22.6±1.4 yrs, 57.1±6.2 ml/kg/min, VO2peak), 10 young unfit (YU, 23.1±3.5 yrs, 41.1±5.0 ml/kg/min), 10 older fit (OF, 73.9±6.6 yrs, 39.0±5.6 ml/kg/min,), and 10 older unfit (OU, 70.9±3.8 yrs, 27.1±6.8 ml/kg/min) underwent graded lower body negative pressure to presyncope or 4 minutes at -100 mmHg. Utilizing venous occlusion plethysmography, calf venous compliance was determined using the first derivative of the pressure-volume relation during cuff pressure reduction. RESULTS: The more fit groups had greater venous compliance than their unfit peers (p<0.05) as did the young groups compared to their older peers (p<0.05) such that OU<YU=OF<YF. LBNP tolerance did not differ between groups. CONCLUSION: These data suggest that aging reduces, and chronic exercise increases, venous compliance. However, these data do not support a significant influence of venous compliance on LBNP tolerance.
This article has been cited by other articles:
|
|
 |
|
  C. N. Young, R. Y. Prasad, A. M. Fullenkamp, M. E. Stillbower, W. B. Farquhar, and D. G. Edwards Ultrasound assessment of popliteal vein compliance during a short deflation protocol J Appl Physiol, May 1, 2008; 104(5): 1374 - 1380. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. R. Halliwill Virtual conductance, real hypotension: what happens when we stand up too fast? J Appl Physiol, August 1, 2007; 103(2): 421 - 422. [Full Text] [PDF]
|
|
|
|
 |
|
 A. Lipp, P. Sandroni, J. E. Ahlskog, D. M. Maraganore, C. W. Shults, and P. A. Low Calf venous compliance in multiple system atrophy Am J Physiol Heart Circ Physiol, July 1, 2007; 293(1): H260 - H265. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. Lindenberger and T. Lanne Sex-related effects on venous compliance and capillary filtration in the lower limb Am J Physiol Regulatory Integrative Comp Physiol, February 1, 2007; 292(2): R852 - R859. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. N. Young, M. E. Stillabower, A. DiSabatino, and W. B. Farquhar Venous smooth muscle tone and responsiveness in older adults J Appl Physiol, November 1, 2006; 101(5): 1362 - 1367. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. P. Hernandez and W. D. Franke Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women J Appl Physiol, September 1, 2005; 99(3): 1070 - 1077. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. W. P. Bleeker, P. C. E. De Groot, F. Poelkens, G. A. Rongen, P. Smits, and M. T. E. Hopman Vascular adaptation to 4 wk of deconditioning by unilateral lower limb suspension Am J Physiol Heart Circ Physiol, April 1, 2005; 288(4): H1747 - H1755. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. R. Meendering, B. N. Torgrimson, B. L. Houghton, J. R. Halliwill, and C. T. Minson Effects of menstrual cycle and oral contraceptive use on calf venous compliance Am J Physiol Heart Circ Physiol, January 1, 2005; 288(1): H103 - H110. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH |
| Visit Other APS Journals Online |
