Blood Pressure and Exercise

Question:
Has anyone ever heard of a mechanism that would lower blood pressure immediately after vigorous exercise? Could plaque in blood vessels be removed during vigorous exercise, causing a lower blood pressure at the end? Or might exhaustion be responsible for a relaxation not normally achieved? Simply put, what factors play a role determining blood pressure and are there ways to lower it?
Answer:
(You better hope that an exercise session does not remove plaque in blood vessels. Recent research shows that plaques traveling through the blood vessels may cause heart attacks.)
Blood pressure readings as high as 240/120 during aerobic exercise and 350/150 during strenuous weight training are not unusual. Also, systolic pressure (the top number) should rise linearly as exercise intensity increases. So you should expect blood pressure to drop after exercise.
However, an unexpected or unreasonable drop in BP may indicate a major medical condition. If that's the case, you should ask your client to see a physician.
Blood pressure is the product of cardiac output and peripheral vascular resistance. From a physiological point of view, age, weight, gender, ethnicity and family history all affect blood pressure.
Mechanically speaking, the pumping of the heart creates a force as the blood pushes against the walls of the arteries and arterioles. (Pressure is force divided by a unit of area.)
The arteries and arterioles create resistance to the blood flow from the heart. As arterioles contract, resistance to blood flow increases, thus blood pressure increases. The opposite happens as arterioles expand.
Immediately after exercising, a drop in blood pressure is natural and expected. Muscle contractions help pump blood back to the heart. Once you stop exercising and these contractions dissipate, the heart responds by decreasing cardiac output, and blood pressure drops.
An acute bout of exercise also dilates the blood vessels. This means less resistance to blood flow and a decrease in blood pressure.
Studies have shown that moderate aerobic exercise (like walking) may be more effective in lowering resting blood pressure than more intense exercise. Specifically, a recent National Institutes of Health (NIH) study showed that aerobic exercise can reduce systolic blood pressure by 11 mmHg and diastolic BP by 9 mmHg.
According to research in Exercise Physiology, the precise mechanism for the exercise-lowering effect of blood pressure is not known, although it may occur because of a reduction of the catecholamines with training.

selamat petang cikgu...

febuari dah kunjung tiba. wah, wah bahasa tu...cepat betul aku rasa masa berlalu. sangat terasa..aku goyang sebenarnya. sebab aku dah rangkakan plan 2008. aku cuma takut masa tak cukup je. masa? itu satu hal. yang paling mustahak aku rasa sumber kewangan. aku sekarang betul-betul buat sedaya upaya aku untuk melaksanakan semua agenda aku untuk tahun ini. aku rasa takde sebab untuk aku melengahkan lagi semua perancangan sebab kalau tak....mati la aku. aku rasa takde yang mustahil untuk aku laksanakan. by hook by crook, aku akan cari jalan untuk itu. kerja. semakin hari semakin meningkat...so far. aku dapat rasakan "time" aku tengah sampai untuk aku deliver kerja aku dengan lebih cemerlang. wah3.....hehehe...aku juga berharap aku tak lalai macam tahun lepas. aku dah tak sanggup lagi merana...cukup2...jadinya, kerja kuat la bang. dengan kerjaya macam aku ni, aku rasa yang boleh menjamin aku adalah diri sendiri je. bukan orang lain. aku kerja, aku makan. tak kerja, lepas makan....hahaha. bulan 3 ni pulak aku masuk half marathon. preparation untuk penang bridge marathon bulan 6 nanti. sebenarnya kalau ikutkan hati ni, semua aku nak masuk. tahun ni banyak sangat pertandingan yang akan berlangsung jadi aku harap aku dapat participate sebahagian pertandingan tu. aku tau memang tak menang punya tapi aku nak rasa keseronokan dan kepuasan diri sendiri. bukan melancap ok...aku berhenti kat sini dulu dan akan sambung lagi nanti..ciao...