trainingsger amp; auml; t to st amp; auml; groups of the abdominal muscles

摘要

trainingsger & auml; t to st & auml; groups of the abdominal musclesin particular, the sitting position of the test persons characterizedin or & t.;.the r & ckenlehne makes;a sitzm & all; belsat least one flexible and / or lastverstellbarer and / or l & auml; ngenver & auml; nderlicher elasticthe belt is arranged in the k & all body with a clamp.or verschlie & white; establishmentis fitted.