NP Medical News about obese adolescents; treadmill walking; cycle ergometer pedalling

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Metabolic responses to submaximal treadmill walking and cycle ergometer pedalling in obese adolescents
Scandinavian Journal of Medicine and Science in Sports, 09/02/09

Lafortuna CL et al. – At comparable HR, oxygen uptake, energy expenditure (EE) and fat oxidation (Fox) were higher, and blood lactate (LA) lower, during treadmill (TM) than cycle ergometer (CE)exercise, suggesting that cycling imposes a metabolic involvement at the level of the single active muscles greater than walking. Therefore, due to different physiological responses to TM and CE, walking was more convenient than cycling in obese adolescents, permitting to attain the same EE at lower HR, with lower blood LA concentration and with greater Fox. These conclusions seem clinically relevant when using exercise as a part of multidisciplinary treatment for juvenile obesity and amelioration of related metabolic disturbances.

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