Biomechanical evaluation of walking and cycling in children

Journal of Biomechanics
João Paulo de Aguiar GrecaThomas Korff

Abstract

Physical activity in children is important as it leads to healthy growth due to physiological benefits. However, a physiological benefit can be partially negated by excessive or unphysiological loads within the joints. To gain an initial understanding into this, the present study sought to compare joint loading between walking and cycling in children. With institutional ethical approval, 14 pre-pubertal children aged 8-12 walked on an instrumented treadmill and cycled on a stationary ergometer. Two methods were used to match physiological load. Cardiovascular loads between walking and cycling were matched using heart rate. Metabolic load was normalised by matching estimates of oxygen consumption. Joint reaction forces during cycling and walking as well as joint moments were derived using inverse dynamics. Peak compressive forces were greater on the knees and ankles during walking than during cycling. Peak shear peak forces at the knee and ankle were also significantly larger during walking than during cycling, independent of how physiological load was normalised. For both cycling conditions, ankle moments were significantly smaller during cycling than walking. No differences were found for knee moments. At equivalent physiologi...Continue Reading

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Citations

Jul 1, 2021·Perceptual and Motor Skills·João Paulo de Aguiar GrecaJennifer Ryan
Dec 17, 2021·BMC Musculoskeletal Disorders·Haeun YumSeung Yeol Lee

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