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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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ASSOCIATION BETWEEN SARCOPENIA-RELATED PHENOTYPES AND AEROBIC CAPACITY INDEXES OF OLDER WOMEN |
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Ricardo Jacó de Oliveira1  ,
Martim Bottaro2, Antonio Marco Mota1, Francisco Pitanga1,
Marcelo Guido1, Tailce Kaley Moura Leite1, Lídia Mara
Aguiar Bezerra1 and Ricardo Moreno Lima1,3 |
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1Graduate School of Physical Education, Catholic University of Brasilia, 2College of Physical Education and Exercise Science, University of Brasilia, 3Graduate Program in Gerontology, Catholic University of Brasilia, Brazil |
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© Journal of Sports Science and Medicine (2009) 8, 337 - 343 |
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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, VO2 peak, muscle strength, elderly, cardiorespiratory fitness, peak torque. |
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