( ( Effects ( of ( ( repetitive motions ) ( from ( performing ( the ( same ( work activities ) ) ) ) ) ) ) ) ( ( are ( increased ( when ( ( awkward ( postures ( and ( forceful exertions ) ) ) ) ( are involved ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNPS Effects)) (PP (IN of) (NP (NP (JJ repetitive) (NNS motions)) (PP (IN from) (S (VP (VBG performing) (NP (DT the) (JJ same) (NN work) (NNS activities)))))))) (VP (VBP are) (VP (VBN increased) (SBAR (WHADVP (WRB when)) (S (NP (JJ awkward) (NNS postures) (CC and) (NN forceful) (NNS exertions)) (VP (VBP are) (ADJP (VBN involved))))))) (. .)))
Effects of repetitive motions from performing the same work activities are increased when awkward postures and forceful exertions are involved.
(ROOT (S (NP (NNP Work)) (VP (VBZ is) (VP (VBN done) (SBAR (RB only) (IN if) (S (NP (DT a) (NN force)) (VP (VBZ is) (VP (VBN exerted) (PP (IN in) (NP (NP (DT the) (NN direction)) (PP (IN of) (NP (NN motion))))))))))) (. .)))