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    Daily Activity Cuts Blood Pressure Risk

    Every Little Bit Counts, Japanese Study Shows
    By
    WebMD Health News

    Jan. 26, 2005 -- Moving just a little bit more than usual could really help your blood pressure.

    Middle-aged men are most likely to avoid high blood pressure if their days are active, a new Japanese study shows.

    Nearly one in three U.S. adults has high blood pressure -- a heart disease and stroke risk factor -- but about a third of them don't know it, says the American Heart Association.

    The Japanese researchers aren't talking about running marathons. In fact, they didn't even consider exercise. Instead, they focused on simple activities like washing dishes or walking up and down stairs.

    It was a practical decision. Few middle-aged people have physically active jobs or spend their free time in physical training, say Noriyuki Nakanishi, MD, DrPH, and Kenji Suzuki, ScD.

    Nakanishi is on staff at Osaka University's medical school. Suzuki works at Japan's Labor and Welfare Association. Their report appears in the Jan. 24 issue of the Archives of Internal Medicine.

    The researchers studied about 2,500 Japanese men, following them for seven years. At the beginning of the study, the men were 35 to 39 years old. None had high blood pressure or heart disease at the start of the study. All worked in white-collar jobs for one of Japan's biggest building contractors.

    Every year, the men's blood pressure was checked. They were asked to fast for eight hours and avoid heavy physical activity for more than two hours before the tests.

    Tracking Their Activity

    The men had to think a little more for the second part of the study. They received an activity list and estimated how much time they spent on each item in a typical weekday.

    The list spared no details, covering every second of the day in 15-minute periods. Activities included sleeping, resting, talking, eating, standing, driving, clerical work, bathing, and dressing. Walking was classified by speed (slow, normal, or brisk). Climbing and descending stairs had separate categories. Gardening and commuting by bicycle also made the list.

    The point was to find out exactly what the men did all day long and whether those habits affected blood pressure over time.

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