THE INFLUENCE OF INCREASING HEEL HEIGHT IN LUMBAR LORDOSIS
Keywords:
spine, lordosis, gaitAbstract
Objective
lnvestigate lumbar lordosis adaptations occurring during !ow speed treadmi/1 gait when using footwear with different heel heights.
Methods
During the experiment three women carried out six different triais each, one bare-footed and tive wearing footwear with different hee/ heights. ln each case sixteen strides were registered and the information grouped together to provide one typica/ gait cycle for analysis. The applied methodology is non-invasive and permits the tri-dimensional kinematical analysis of the movement of 35 to 40 surface markers attached to the skin of the volunteers along the virtual fine defined by the spinous processes of the vertebrae. The vertebral spine is represented by a continuous curve and ana!yzed using the 2-dimensional geometric curvature concept. The lumbar lordosis adaptations were measured in the sagittal plane during the gait cycle.
Results
The study verified a reduction in lumbar lordosis with increasing heel-height of the footwear used during gait. The reductions in the maximum and average lumbar curvatures were significant (p<0.05). The method used was shown to be efficient and sensitive and allowed for the quantification of the lumbar curve during movement with greater precision than that of traditional static methods.
Conclusion
lncreasing hee!-heights of the footwear used provoked a rectification effect on lumbar /ordosis during treadmi/1 gait.
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References
High heels brought law. Lancet. 1992; 340(8815):323.
Nasser JP, Mello SIL, Avila AOV. Análise do impulso em calçados femininos em diferentes alturas de salto. ln: Anais do 7QCongresso Brasileiro de Biomecânica; Campinas; 1997. p.491-4.
Monteiro VA. Ergonomia, design e conforto no calçado feminino [mestrado]. Rio de Janeiro: Pontifícia Universidade Católica do Rio de Janeiro; 1999.
Opila KA. Kinematics of high-heeled gait. Arch Phys Med Rehabil. 1990; 71304-9.
Eisenhardt JR, Cook D, Pregler 1, Foehl HC. Changes in temporal gait characteristics and pressure distribution for bare feet versus various heel heights. Gait & Posture. 1996; 4:280-6.
Murray MP, Kary RC, Sepic SB. Walking patterns of normal women. Arch Phys Med Rehabil. 1970; 51:637-59.
Snow RE, Williams KR. High heeled shoes: their effect on center of mass position, posture, three dimensional kinematics rearfoot motion and ground reaction forces. Arch Phys Med Rehabil. 1994; 75: 568-76.
Merrifield HH. Female gait patterns in shoes with different heel heights. Ergonomics. 1971; 14(3):411-7.
Light LH, Mclellan GE, Klenerman LK. Skeletal transients on heel strike in normal walking with different footwear. J Biomech. 1980; 13(6):477-80.
O. Ersson B. Shoe Analysis. 2002 [Acesso em 2004 set 6]. Disponível em: http://www.shoedoc.se/skoeng. asp
Keiserman WK. Dor Lombar. 2003 [Acesso em 2004 set 6]. Disponível em: http://www.abcdasaude.com.br/ artigo.php?163
Cailliet R. Compreenda sua dor de coluna. São Paulo: Manole. 1985.
Opila KA, Wagner SS, SchiowitzS, Chen J. Postural alignment in barefoot and high heeled stance. Spine. 1988; 13(5)452-7.
De Lateur BJ, Giaconi RM, Questad K, Ko M, Lehmann JF. Footwear and posture: compensatory strategies for heel height. Am J Phys Med Rehabil. 1991; 70(5):246-54.
Bendix T, S0rensen SS, Klausen K. Lumbar curve, trunk muscles, and line of gravity with different heel heights. 1984; Spine. 9(2)223-7.
Brenzikofer R, Barros RM, Lima Filho EC, Toma E, Bordini LS. Alterações no dorso e na coluna vertebral durante a marcha. Rev Bras Biomec. 2000; 1:21-6.
Brenzikofer R, Barros RML, Lima Filho EC, Toma E, Bordini LS. Quantificação das curvaturas da coluna vertebral durante a marcha. ln: Anais do 9. Congresso Brasileiro de Biomecânica; 2001; Gramado. Porto Alegre: Escola de Educação Física da UFRGS; 2001. p.230-5.
Barros RM, Brenzikofer R, Leite N, Figueroa PJ. Desenvolvimento e avaliação de um sistema para análise tridimensional de movimentos humanos. Rev Bras Eng Biom. 1999; 15(1/2):79-86.
Figueroa PJ, Leite NJ, Barros RM. A flexible software for tracking of markers used in human motion analysis. Comp Meth Prog Biom. 2003; 72(2): 155-65.
Lang S. Cálculo. Rio de Janeiro: Ao Livro Técnico; 1970. p.28-45.
Callegari-Jacques SM. Bioestatística: princípios e aplicações. Porto Alegre: Artmed. 2003; p.84-93.
