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Up to 14 bilateral proximal muscles were exercised 3 times weekly for 12 weeks. <jats:italic>Results<\/jats:italic>: Nine children with SMA, aged 10.4\u2009\u00b1\u20093.8 years, completed the resistance training exercise program. Ninety percent of visits occurred per protocol. Training sessions were pain\u2010free (99.8%), and no study\u2010related adverse events occurred. Trends in improved strength and motor function were observed. <jats:italic>Conclusions<\/jats:italic>: A 12\u2010week supervised, home\u2010based, 3\u2010day\/week progressive resistance training exercise program is feasible, safe, and well tolerated in children with SMA. These findings can inform future studies of exercise in SMA.  <jats:italic>Muscle Nerve<\/jats:italic> <jats:bold>52<\/jats:bold>: 559\u2013567, 2015<\/jats:p>","DOI":"10.1002\/mus.24568","type":"journal-article","created":{"date-parts":[[2015,1,19]],"date-time":"2015-01-19T11:26:02Z","timestamp":1421666762000},"page":"559-567","source":"Crossref","is-referenced-by-count":89,"title":["Resistance strength training exercise in children with spinal muscular atrophy"],"prefix":"10.1002","volume":"52","author":[{"given":"Aga","family":"Lewelt","sequence":"first","affiliation":[{"name":"Division of Physical Medicine and Rehabilitation, Pediatric Motor Disorders Research Program University of Utah School of Medicine 30 North 1900 East Salt Lake City Utah 84132 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristin J.","family":"Krosschell","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy and Human Movement Sciences Northwestern University 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