( ( The ( sacroiliac belt ) ) ( ( ( ( applies ( ( a ( small amount ) ) ( of pressure ) ) ) ( to ( the sacrum ) ) ) ( while ( ( giving ( a ( slight compressive ) ) ) ( force ( to ( ( hold ( the ( SI area ) ) ) tight ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ sacroiliac) (NN belt)) (VP (VBZ applies) (NP (NP (DT a) (JJ small) (NN amount)) (PP (IN of) (NP (NN pressure)))) (PP (TO to) (NP (DT the) (NN sacrum))) (SBAR (IN while) (S (S (VP (VBG giving) (NP (DT a) (JJ slight) (NN compressive)))) (VP (VBP force) (S (VP (TO to) (VP (VB hold) (NP (DT the) (NNP SI) (NN area)) (ADVP (RB tight))))))))) (. .)))
The sacroiliac belt applies a small amount of pressure to the sacrum while giving a slight compressive force to hold the SI area tight.
(ROOT (S (NP (NN Pressure)) (VP (VBZ is) (VP (VBN defined) (PP (IN in) (NP (NN physics))) (PP (IN as) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN force)) (VP (VBG pushing) (PP (IN against) (NP (DT a) (VBN given) (NN area)))))))))) (. .)))