4 d/ G9 r# f, j, d5 V; H 「美国医学会期刊」（Journal of the AmericanMedical Association）刊出的评论报告說，不论是在性行为或体能活动方面越活跃的人，心脏病发的风险就越低。 - N1 @4 Z; ^6 B# m 5 T C1 y Q$ I: I 美国塔弗兹大学医学中心（Tufts Medical Center）及哈佛大学公共卫生学院（Harvard School ofPublic Health）的研究人员强调，实际因性爱引起心脏病发的人数并不多。9 @9 Q ]: V" }, r, r: t3 C: N
4 \, p0 d: e" `7 u' ^/ I6 a) m 报导說，性爱就像任何的体能活动，会增加心跳速率及血压，代表心脏必须更卖力运作。因此，性爱引发心脏毛病的风险，与相同强度体能活动引发心脏病的风险是一样的。 ' r: L! Q8 @7 ~- {& u9 r 6 p" T8 s- @; ~# V' V. C; C5 L- d
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* S! s; }; W8 t' D: EAdulterers beware... it could raise your risk of heart attack 23rd March 2011 & a+ r. h x) e! l0 p, \$ I( c4 m" w; {
Having a fling or one-night stand is already a risky business. But now there is another reason for adulterers to worry. O* E& d. W( W& s 7 l0 f4 m' E. x* s; l' {$ PThey are probably more at risk of having a heart attack. 9 _1 q( L$ c6 p5 o: X: k M. Z2 i" V5 p- m1 Y
Occasional sexual activity is much more likely to cause a heart attack than regular sex, researchers have found.% @* L6 {2 {" k! Y1 n1 e
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The short-term risk of having a heart attack increases almost three-fold among those who rarely make love. ; l/ G6 Z: ^. j4 ]9 Y3 [ : P+ Q, T& j- l# r+ S5 UThose who have sex more often reduce the risk of it causing a heart attack – which means happily married couples could have the advantage.- I9 L' a5 V# I
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A review of 14 studies of heart attacks found the heart is under strain during any form of ‘episodic’ physical activity – something an individual only does rarely. ! V: l8 A- n; k; U4 c$ m2 i1 q/ H& N7 ]3 J* \+ E% D& R, E, Z
Overall, there is a 3.5 times higher risk of such activity triggering a heart attack.$ v. L0 b# J+ q0 Z- v8 g
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The risk after ‘episodic’ sexual activity – the kind associated with affairs and one-night stands – is 2.7 times higher.+ W! M% n% J$ E4 J2 a$ ~
5 k: d% M- `0 v( t% g3 uBut the more active an individual is, either sexually or physically, the lower the risk falls, said the review in the Journal of the American Medical Association. ! R4 j, d" {, F8 E+ ^# `& g: @& Z! k1 I O7 w4 Q9 d
The relative risk of heart attack caused by a burst of activity falls by around 45 per cent for each additional time a person indulges in it a week. The risk of sudden cardiac death also falls by 30 per cent. 2 m/ L2 R, H% d) I! N( O ; F* C( D _9 L, Q9 dThe researchers, from the Tufts Medical Centre and Harvard School of Public Health, stress that the number of heart attacks actually caused by sex will be low. 5 }8 Y7 w3 c# h, p: Z8 z* y+ F
Like any physical activity, sex can increase the heart rate and blood pressure, which means the heart has to work harder. As a result, sex carries the same risk of triggering heart trouble as equally energetic forms of physical activity. 0 m5 k6 v1 S1 n# S* Y ^; w. v( u 6 C! Q3 y& S. p" [The higher risk during activity is then offset by a lower ‘everyday’ background risk for people who are fitter because they are more active. / g! @' q6 z7 ^6 \% F: [4 O5 X6 |- S: N8 r* V3 {2 h: c
Amy Thompson, senior cardiac nurse at the British Heart Foundation, said: ‘It’s important to distinguish between what causes a heart attack, and what potentially triggers it. & v* _) |5 [4 Y/ P) P4 H% Y# L( |% K& c+ t
'The study shows sex can act as a trigger, but this doesn’t change our viewpoint on the health benefits of physical activity. % z- \# A: H/ W" v1 d & E k) p+ U/ s2 i- x V$ u8 y‘To help keep your heart healthy you should aim to do 30 minutes of moderate-intensity activity, such as a brisk walk or gardening, at least five times a week.4 A) R+ f: X, s0 m% O+ g+ Q$ k8 i
* B2 G9 w1 v9 [7 V, K'Sex places no more stress on the heart than climbing a couple of flights of stairs, so people with or without heart disease need not avoid it.’
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