Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2009) 08, 337 - 343

Research article
Association Between Sarcopenia-Related Phenotypes and Aerobic Capacity Indexes of Older Women
Ricardo Jacó de Oliveira1, , Martim Bottaro2, Antonio Marco Motta1, Francisco Pitanga1, Marcelo Guido1, Tailce Kaley Moura Leite1, Lídia Mara Aguiar Bezerra1, Ricardo Moreno Lima1,3
Author Information
1 Catholic University of Brasilia,
2 University of Brasilia,
3 Catholic University of Brasilia, Brazil

Ricardo Jacó de Oliveira
✉ Graduate School of Physical Education, Catholic University of Brasilia, Brazil
Email: rjaco@terra.com.br
Publish Date
Received: 10-11-2008
Accepted: 11-05-2009
Published (online): 01-09-2009
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ABSTRACT

The purpose of the present study was to examine the association between fat-free mass (FFM), quadriceps strength and sarcopenia with aerobic fitness indexes of elderly women. A total of 189 volunteers (66.7 ± 5.46 years) underwent aerobic capacity measurement through a symptom-limited cardiopulmonary exercise test to determine their individual ventilatory thresholds (VT) and peak oxygen uptake (VO2 peak). Quadriceps muscle strength was assessed using an isokinetic dynamometer. Also, dual energy X-ray absorptiometry was used to assess FFM and cutoff values were used to classify subjects as sarcopenic or nonsarcopenic. Correlations, student t-test and analysis of variance were used to examine the data. Both FFM and quadriceps strength variables were positively and significantly correlated with the measured aerobic capacity indexes. These results were observed for peak exercise as well as for ventilatory thresholds. Individuals classified as sarcopenic presented significantly lower muscle strength and (VO2 peak) when compared to nonsarcopenic. It can be concluded that FFM and quadriceps strength are significantly related to aerobic capacity indexes in older women, and that besides presenting lower quadriceps strength, women classified as sarcopenic have lower peak oxygen consumption. Taken together, the present results indicate that both FFM and strength play a role in the age-related decline of aerobic capacity.

Key words: Sarcopenia, VO peak, muscle strength, elderly, cardiorespiratory fitness, peak torque


           Key Points
  • Maximal aerobic capacity, generally expressed as peak oxygen consumption (VO peak), declines with advancing age and this process is associated with an increased risk for cardiovascular diseases.
  • Also, the aging process is associated with a progressive loss of muscle mass and strength and this phenomenon has been referred to as Sarcopenia. Sarcopenia has been described in both elderly men and women and has been linked to multiple negative clinical outcomes.
  • The present study provide evidence that muscle-related phenotypes are associated with aerobic capacity of older individuals, thus suggesting that sarcopenia explains in part the decline in aerobic fitness observed with advancing age.
 
 
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