A study published in March, for instance, that compared the bone densities of weight lifters, runners, and cyclists found that the cyclists had lower bone mineral density than the runners or the weight lifters. In another study, triathletes added moderately to their bone mass over the course of a season.Cycling, unlike running or weight-lifting, causes little impact to skeletons. Bones react to external stresses by strengthening bone. [...] From their studies they have found that body mass is a central factor. In Smathers' study, the lightest riders had the lowest bone density. In addition, many serious riders burn more calories in a day than they consume, an energy imbalance that is being studied to determine its impact on bone loss. And sweat could play a role. A rider can lose hundreds of milligrams of calcium an hour through sweat.
US crude oil exports 2014 to August 2024
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