POOR MOBILITY IN SURROUNDING MUSCLES
The pelvis is the foundation for the spine. Decreased mobility in the hips, hamstrings, ankles, and thoracic spine can lead to overcompensation at the lumbar spine and excessive pelvic tilt. This problem is particularly common in women — in part because of higher heels, but also because the connective tissues of an average woman’s spine are usually looser than the average man’s.
腰痛的人，常有腳(股關節、腳踝)、和胸椎活動度較低的問題。若是只是單純治療腰椎(如復健治療熱敷電療、拉腰)，效果較不易持久。腰椎痛不能只是治腰。
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黃性賢:疑義問答十三摘要
(9) 問：松腹，垂臀其意何在？
答：松腹關係殊大，腹部是丹田蓄氣之庫，氣沉丹田是以心運氣於丹田，然後便能運轉全身，若氣停於丹田而不運是為滯氣，謂之「脹」，故氣下沉後稍停即轉運則不滯留腹遂松柔，久之而有彈性，使氣行遍全身，內氣可斂入脊骨。十三勢歌云：「腹內松淨氣騰然」，切不宜氣集腹部，久之則腹部凸出。
垂臀，垂臀者即於每一動作中。臀應松垂下不可突出，亦不可凹閭，一般教與學者多忽略這要點。松腹與垂臀相輔相成，兩者缺一不可否則根浮腰硬，身體失去中心。控制重身達到中定。練有得法可驗上腹部近丹田處，用手指按之急放。必有彈性之感覺。臀收如棉花也。
