Physical Activity

[Guest guest]

Hi folks:

The following dated ***MAY 2005*** may be relevant.

Note particularly: " Physical inactivity, defined as less than 1 hour

of exercise per week, was associated with a 52% increase in overall

mortality and with a doubling of cardiovascular mortality. "

This suggests that the benefit almost all comes from reduced

cardiovascular risk since the doubling of cardiovascular mortality

will make up the most part of the 52% rise in overall mortality among

those who are inactive.

BUT .......... since those on CR already have a very dramatically

reduced cardiovascular risk it seems likely that physical activity

will confer much less benefit to those on CR than for the majority of

the population who are daily clogging up their arteries on the SAD

diet.

[i am NOT saying we should avoid activity. I am saying that the most

part of the benefit of exercise appears, from this study, to be to

fix problems we on CRON are not likely to encounter.]

Here is the abstract:

" Adiposity as Compared With Physical Activity in Predicting Mortality

Among Women.

Hu FB, Willett WC, Li T, Stampfer MJ, Colditz GA, Manson JE.

Departments of Nutrition and Epidemiology, Harvard School of Public

Health; and Channing Laboratory and Division of Preventive Medicine,

Department of Medicine, Harvard Medical School and Brigham and

Women's Hospital, Boston, Massachusetts.

Some believe that improved physical fitness can counter the effects

of overweight and obesity on illness and death. If so, the

implication is that obesity may be a less important factor in

mortality than fitness. The investigators reviewed data on body mass

index (BMI) and mortality for 116,564 women participating in the

Nurses' Health Study. In 1976, the women were 30 to 55 years of age

and had no known cardiovascular disease or cancer. The 10,282 deaths

occurring during 24 years of follow-up included 5223 from cancer and

2370 from cardiovascular disease.A direct relationship between BMI

and mortality was evident when only women who had never smoked were

analyzed. On multivariate analysis, the relationship held for deaths

from cancer and, more strongly, for deaths from cardiovascular

causes. Increased mortality correlated significantly with both excess

weight/obesity and physical inactivity. Overall mortality for obese

women, whose BMI was 30 kg/m or higher, was double that for lean

women having a BMI less than 25 kg/m. Deaths from cardiovascular

disease were 3 times as high, and cancer mortality was increased 65%.

Physical inactivity, defined as less than 1 hour of exercise per

week, was associated with a 52% increase in overall mortality and

with a doubling of cardiovascular mortality. Overweight and obesity

predicted increased mortality independently of the level of physical

activity, and higher activity levels did not weaken the association

between obesity and mortality. Compared with lean, active women, the

relative risk of death was 1.55 for lean, inactive women, 1.91 for

obese women who were active, and 2.42 for obese women who were

inactive. In the entire cohort, excess weight and physical inactivity

together accounted for an estimated 26% of all premature deaths, 47%

of deaths from cardiovascular causes, and 16% of deaths from cancer.

When analysis was limited to women who had never smoked, the

respective figures were 31%, 59%, and 21%.The BMI and the level of

physical activity significantly and independently predicted mortality

in these middle-aged women, but a high activity level did not

eliminate the excess of deaths associated with obesity. In addition,

being lean did not counteract the increased mortality associated with

inactivity. Public health efforts should emphasize the importance of

maintaining healthy body weight and also the need to engage regularly

in physical activity. "

Rodney.

[Guest guest]

It is my firm belief that exercise both aerobic and weight lifting (manual labor) increase collaterals in the heart and peripheral arteries. More important than BMI to me. Doing a lot of manual I find it difficult to get to and stay below 175#. I od that with 1800 kcals.

I also think women are totally diff in their rate of aging.

But both have to face atherosclerosis in coronaries, peripherals and brain.

Obesity as defined by 30# overweight based on the insurance tables is suspect, without regard for physical condition.

My best guide is Blood pressure. If I can keep my BP nominal, I care not getting to say 165# as an arbitrary level that I can't scientifically determine for me..

Just my take.

regards.

----- Original Message -----

From: Rodney

Sent: Thursday, April 21, 2005 8:43 AM

Subject: [ ] Physical Activity

Hi folks:The following dated ***MAY 2005*** may be relevant.Note particularly: "Physical inactivity, defined as less than 1 hour of exercise per week, was associated with a 52% increase in overall mortality and with a doubling of cardiovascular mortality."This suggests that the benefit almost all comes from reduced cardiovascular risk since the doubling of cardiovascular mortality will make up the most part of the 52% rise in overall mortality among those who are inactive.BUT .......... since those on CR already have a very dramatically reduced cardiovascular risk it seems likely that physical activity will confer much less benefit to those on CR than for the majority of the population who are daily clogging up their arteries on the SAD diet.[i am NOT saying we should avoid activity. I am saying that the most part of the benefit of exercise appears, from this study, to be to fix problems we on CRON are not likely to encounter.]Here is the abstract:"Adiposity as Compared With Physical Activity in Predicting Mortality Among Women.Hu FB, Willett WC, Li T, Stampfer MJ, Colditz GA, Manson JE.Departments of Nutrition and Epidemiology, Harvard School of Public Health; and Channing Laboratory and Division of Preventive Medicine, Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts.Some believe that improved physical fitness can counter the effects of overweight and obesity on illness and death. If so, the implication is that obesity may be a less important factor in mortality than fitness. The investigators reviewed data on body mass index (BMI) and mortality for 116,564 women participating in the Nurses' Health Study. In 1976, the women were 30 to 55 years of age and had no known cardiovascular disease or cancer. The 10,282 deaths occurring during 24 years of follow-up included 5223 from cancer and 2370 from cardiovascular disease.A direct relationship between BMI and mortality was evident when only women who had never smoked were analyzed. On multivariate analysis, the relationship held for deaths from cancer and, more strongly, for deaths from cardiovascular causes. Increased mortality correlated significantly with both excess weight/obesity and physical inactivity. Overall mortality for obese women, whose BMI was 30 kg/m or higher, was double that for lean women having a BMI less than 25 kg/m. Deaths from cardiovascular disease were 3 times as high, and cancer mortality was increased 65%. Physical inactivity, defined as less than 1 hour of exercise per week, was associated with a 52% increase in overall mortality and with a doubling of cardiovascular mortality. Overweight and obesity predicted increased mortality independently of the level of physical activity, and higher activity levels did not weaken the association between obesity and mortality. Compared with lean, active women, the relative risk of death was 1.55 for lean, inactive women, 1.91 for obese women who were active, and 2.42 for obese women who were inactive. In the entire cohort, excess weight and physical inactivity together accounted for an estimated 26% of all premature deaths, 47% of deaths from cardiovascular causes, and 16% of deaths from cancer. When analysis was limited to women who had never smoked, the respective figures were 31%, 59%, and 21%.The BMI and the level of physical activity significantly and independently predicted mortality in these middle-aged women, but a high activity level did not eliminate the excess of deaths associated with obesity. In addition, being lean did not counteract the increased mortality associated with inactivity. Public health efforts should emphasize the importance of maintaining healthy body weight and also the need to engage regularly in physical activity."Rodney.

[Guest guest]

Hi,

Try www.caloriecontrol.org. I found this site helpful!

Barbara

[Guest guest]

Fitday has a section - Activities - that lets you pick an activity

and input your time and it gives you calories burned. The Calories

Per Hour website also has a calculator that you put your weight in,

activity & time and it calculates calories burned. I hate the

interface, but they have a HUGE database of activities.

http://www.caloriesperhour.com/index_burn.html

> Does anyone know of a web site that would show approximate calories

> burned for different exercise? I am trying to get more of a

handle on

> getting my 500 calorie deficit each day hoping to speed my weight

loss up

> a bit.

>

> Oh I got a BFL gel wrist band in the mail for entering and not

winning in

> 2005. I will wear it with my Lance Armstrong band

> Michele T

[Guest guest]

I had to laugh, one of their walking options was " walking to and from the

outhouse (to is faster) " .

Leah S

I hate the

> interface, but they have a HUGE database of activities.

>

> http://www.caloriesperhour.com/index_burn.html

>