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After an age-based classification of patients into the subgroups HA: 17\u201329 (n = 37), HB: 30\u201339 (n = 50), HC: 40\u201349 (n = 61), HD: 50\u201370 in years (n = 43) the clinical WFH score for the ankle and knee joint was determined. To normalize the SEMG values amplitude ratios (percentage of cumulated activity) were calculated with respect to the specific limb. With increasing age, the patient showed descriptively a deterioration of the joint situation. The extensors of the knee joint reached significantly higher absolute and percentage levels in the muscle activity with increasing age (p &lt; 0.05). The absolute amplitude values of the Mm. gastrocnemii showed no differences in the age groups while the relative levels were decreased.<\/jats:p><jats:p>The present study shows that patients with increasing age and degree of haemophilic arthro pathy deve lop a modified control strategy during upright standing, in the form of a shift from the plantar flexors to the extensors of the knee joint.<\/jats:p>","DOI":"10.5482\/hamo-14-02-0015","type":"journal-article","created":{"date-parts":[[2014,11,10]],"date-time":"2014-11-10T02:21:20Z","timestamp":1415586080000},"page":"S36-S42","source":"Crossref","is-referenced-by-count":0,"special_numbering":"S","title":["Altersabh\u00e4ngige Ansteuerung der Muskulatur im Stand bei Patienten mit H\u00e4mophilie"],"prefix":"10.5482","volume":"34","author":[{"given":"F.","family":"St\u00e4uber","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Brunner","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D.","family":"Czepa","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Kr\u00fcger","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Wendel","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Seuser","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Hilberg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"G\u00f6hler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2017,12,27]]},"reference":[{"key":"10.5482\/HAMO-14-02-0015-1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2011.04.030"},{"key":"10.5482\/HAMO-14-02-0015-2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2516.2001.00540.x"},{"key":"10.5482\/HAMO-14-02-0015-3","doi-asserted-by":"publisher","DOI":"10.1136\/ard.29.3.261"},{"key":"10.5482\/HAMO-14-02-0015-4","first-page":"214","volume":"64","author":"Czepa","year":"2013","journal-title":"Deutsche Zeitschrift f\u00fcr Sportmedizin"},{"key":"10.5482\/HAMO-14-02-0015-5","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2516.2008.01860.x"},{"issue":"Suppl 3","key":"10.5482\/HAMO-14-02-0015-6","first-page":"128","volume":"18","author":"St\u00e4uber","year":"2012","journal-title":"Haemophilia"},{"key":"10.5482\/HAMO-14-02-0015-7","doi-asserted-by":"publisher","DOI":"10.1111\/hae.12034"},{"key":"10.5482\/HAMO-14-02-0015-8","unstructured":"Gowitzke BA, Milner M. 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