Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Association  between  functional  mobility  and  osteopenia  of  the  lower limbs in active postmenopausal women
Year:2017
Research Areas
  • Body constitution,
  • Physiology of exercise
Information
Abstract
Background: Functional mobility of lower limbs is directly related to independence and quality of life in elderly (Cruz?Jimenez, 2017). However, research is not conclusive regarding the association of bone fragility with functional mobility, with some studies indicating inverse association (Burke et al., 2010) and others lack of relationship (Liu? Ambrose et al., 2003). Moreover, studies considering bone fragility in different body zones are still scarce. Objective: To verify the influence of osteopenia in the functional mobility of lower limbs in active postmenopausal women. Methods: The sample was composed by twenty?eight non?sedentary postmenopausal women, aged 65.9 ± 4.9 years and divided into two groups: with osteopenia (12) and without this condition (16). Osteopenia criterion for lower limbs was calculated from values of 33 young women, aged 24.4 ± 2.9 years, of similar characteristics, according to the World Health Organization (WHO) procedure to define osteopenia (WHO, 1994). Bone body mass and body composition was assessed by dual energy X?ray absorptiometry (DXA). Functional mobility of lower limbs was performed using the sitting and standing, get up and walk and walking 6 minutes tests (Rikli, 2000). Multivariate analyses of variance were performed for characterization data and functional mobility. Differences in the variables of individual interest between groups were detected from the univariate analyses of variance. Results: There was significant difference between groups for body mass (p = 0.03), lean body mass (p = 0.01) and bone body mass of lower limbs (p < 0.001), with the osteopenic group presenting lower values. There was no difference in the functional mobility of the lower limbs with and without the presence of osteopenia. Conclusions: Our results showed that active postmenopausal women obtained the same scores of functional mobility, regardless of bonemass. It is important to emphasize that several structural alterations, which are also essential for the mechanical strength of bone, cannot be detected by the DXA measurements (Huuskonen et al., 2001). The small number of observations and the evaluation of the level of physical activity by an indirect method may have influenced these results. Another study with a larger sample number, the inclusion of a sedentary group and an experimental group with a greater bone mass loss (osteoporosis) would be necessary to confirm these findings. Practical application: In active postmenopausal women the reduction of lower limb bone mineral density does not seem to be a limiting factor of functional mobility. References Burke TN, França FJ, Ferreira de Meneses SR, Cardoso VI, Marques AP. (2010). Postural control in elderly persons with osteoporosis: Efficacy of an intervention program to improve balance and muscle strength: a randomized controlled trial. Am J Phys Med Rehabi, 89(7), 549?556. Cruz?Jimenez, M. (2017). Normal Changes in Gait and Mobility Problems in the Elderly. Phys Med Rehabil Clin N Am, 28(4), 713?725. Huuskonen, J., Vaisanen, S. B., Kroger, H., Jurvelin, J. S., Alhava, E., & Rauramaa, R. (2001). Regular physical exercise and bone mineral density: a four?year controlled randomized trial in middle?aged men. The DNASCO study. Osteoporos Int, 12(5), 349?355. Liu?Ambrose T, Eng JJ, Khan KM, Carter ND, McKay HA. (2003). Older women with osteoporosis have increased postural sway and weaker quadriceps strength than counterparts with normal bone mass: overlooked determinants of fracture risk? J Gerontol A Biol Sci Med Sci, 58(9), 862?866. Rikli, R. E. (2000). Reliability, validity, and methodological issues in assessing physical activity in older adults. Res Q Exerc Sport, 71(2 Suppl), S89?96. World Health Organization (WHO). Assessment of fracture risk and its application to screening for postmenopausal osteoporosis. WHO Technical Report Series 843, Geneva, 1994
International
Si
Congress
X International Symposium in Strength Training
960
Place
Madrid
Reviewers
Si
ISBN/ISSN
978-84-697-8122-7
Start Date
15/12/2017
End Date
16/12/2017
From page
147
To page
148
X SIMPOSIO INTERNACIONAL DE ACTUALIZACIONES EN ENTRENAMIENTO DE LA FUERZA X/ International Symposium in Strength Training
Participants
  • Autor: Rocio Cupeiro Coto (UPM)
  • Autor: Eliane Aparecida Castro . (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Investigación del Laboratorio de Fisiología del Esfuerzo.
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