Why is jumping incorporated into CrossFit Kids classes on a daily basis? Plyometric movements are acceptable for children to perform; in fact, they have been shown to improve athletic abilities and prevent injuries (Faigenbaum et al.). Besides these benefits, jumping, or impact loading of any sort, is beneficial to bone health (Chen et al.), specifically, those that increase bone-force strain and rate (Skerry). In pre- and early peri-puberty where bone growth velocity and bone mineral content are increasing, a window of opportunity opens for interventions to be of great benefit, such as fracture prevention (MacKelvie, Khan, & McKay and Karlsson & Rosengren). Not only are these benefits relevant in the short term, research also indicates the effects may be rather long-lasting (Karlsson & Rosengren and Weeks & Beck). Realizing this opportunity, CrossFit Kids recommends programming some form of impact loading for every class. Box jumps, burpees, tuck jumps, jump rope, and certain weightlifting movements (for appropriate ages and abilities) are just some examples of how to incorporate increased load, high-rate movements into some component of every CrossFit Kids class. Please note that care should be taken implementing impact loading for adolescents that are severely overweight. Keeping in mind the excess load their skeletal system is carrying, the initial goal for this population is to get them to a healthier bodyweight. crossfitkids/info-faq/
Posted on: Mon, 14 Jul 2014 14:00:01 +0000
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