( There ( ( is ( ( ( a ( great deal ) ) ( of concern ) ) ( that ( managed ( care ( will ( ( ( have ( a ( negative impact ) ) ) ( on ( ( the ability ) ( of ( specialty societies ) ) ) ) ) ( to ( ( support ( their ( educational activities ) ) ) ( because ( ( ( ( of ( ( greater pressures ) ( on ( ( practicing ( Orthopaedic surgeons ) ) ( to ( be ( more productive ) ) ) ) ) ) ) , ) but ) ( with ( ( an ( expected decrease ) ) ( in revenue ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT a) (JJ great) (NN deal)) (PP (IN of) (NP (NN concern))) (SBAR (WHNP (WDT that)) (S (VP (VBD managed) (SBAR (S (NP (NN care)) (VP (MD will) (VP (VB have) (NP (DT a) (JJ negative) (NN impact)) (PP (IN on) (NP (NP (DT the) (NN ability)) (PP (IN of) (NP (NN specialty) (NNS societies))))) (S (VP (TO to) (VP (VB support) (NP (PRP$ their) (JJ educational) (NNS activities)) (PP (RB because) (PP (IN of) (NP (NP (JJR greater) (NNS pressures)) (PP (IN on) (S (VP (VBG practicing) (NP (JJ Orthopaedic) (NNS surgeons)) (S (VP (TO to) (VP (VB be) (ADJP (RBR more) (JJ productive)))))))))) (, ,) (CC but) (PP (IN with) (NP (NP (DT an) (VBN expected) (NN decrease)) (PP (IN in) (NP (NN revenue)))))))))))))))))) (. .)))
There is a great deal of concern that managed care will have a negative impact on the ability of specialty societies to support their educational activities because of greater pressures on practicing Orthopaedic surgeons to be more productive, but with an expected decrease in revenue.
(ROOT (S (NP (NP (NN Smoking) (NN tobaccowould)) (ADJP (RBS most) (JJ likely))) (VP (VBP have) (NP (NP (DT a) (JJ negative) (NN impact)) (PP (IN on) (NP (NP (DT the) (NN ability)) (PP (IN of) (NP (DT an) (ADJP (JJ individual) (S (VP (TO to) (VP (VB succeed) (PP (IN at) (NP (JJ physical) (NNS activities))) (SBAR (IN because) (S (NP (PRP it)) (NP (PRP it)))))))) (NNP decreases) (NN stamina) (CC and) (JJ cardiovascular) (NN efficiency))))))) (. .)))
Smoking tobaccowould  most likely have a negative impact on the ability of an individual to succeed at physical activities because it it decreases stamina and cardiovascular efficiency.