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2007 Benchmarking Report - Alliance for Biking & Walking

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8: Impacts of Bicycling and<br />

40%<br />

35%<br />

30%<br />

25%<br />

20%<br />

15%<br />

10%<br />

5%<br />

0%<br />

<strong>Walking</strong> on Public Health<br />

Public health and levels of physical activity are inextricably<br />

linked. This report analyzed data on a number of public<br />

health indicators compared to biking and walking levels. Indicators<br />

include obesity and overweight levels (current and<br />

over time), physical activity levels, high blood pressure, and diabetes.<br />

<strong>Biking</strong>, <strong>Walking</strong> and Obesity Levels<br />

Trends Over Time<br />

To compare rates of biking and walking with obesity<br />

trends, Census Journey to Work data <strong>for</strong> 1960 through 2000<br />

were compared to overweight and obesity levels in the U.S.<br />

<strong>for</strong> the same time period. These data show that as biking and<br />

Change in Bicycling and <strong>Walking</strong> Rates vs.<br />

Adult Overweight Rates over last 40 years<br />

percent overweight or obese<br />

1960<br />

1970<br />

percent % overweight<br />

percent % obese obese<br />

percent % of trips of trips to to work<br />

by bike or foot or foot<br />

1980<br />

1990<br />

2000<br />

12%<br />

10%<br />

Sources: National Center <strong>for</strong> Health Statistics (2006), Census (1960,1970,1980,1990,2000);<br />

r = -0.86 (bike+walk/overweight) r = -0.79 (bike+walk/obesity)<br />

8%<br />

6%<br />

4%<br />

2%<br />

0%<br />

percent of trips to work by bicycle or foot<br />

percent of children who bike or walk to school<br />

walking levels have plummeted, overweight levels have steadily<br />

increased and obesity levels have soared. The decrease in<br />

bicycling and walking may be even greater since these data do<br />

not take into account any trips besides work trips (walking and<br />

biking to school, <strong>for</strong> example, would not be counted here). Also,<br />

bicycling was not separated out from “other”modes in early<br />

Census surveys, so 1960 and 1970 levels shown are <strong>for</strong> walking<br />

only. While bicycling and walking levels fell 67% between 1960<br />

and 2000, obesity levels increased by 241%. Although these two<br />

trends are not the only factors involved, the correlation cannot<br />

be ignored.<br />

This report looked at data on childhood obesity prevalence<br />

from the CDC and the National Health and (cont. next page)<br />

Trend in Obese Children vs. Rate of <strong>Biking</strong> and<br />

<strong>Walking</strong> to School<br />

45%<br />

40%<br />

35%<br />

30%<br />

25%<br />

20%<br />

15%<br />

10%<br />

5%<br />

0%<br />

1966-69<br />

1972-77<br />

percent of kids who bike or<br />

walk to school<br />

percent of kids whoare obese<br />

1978-83<br />

1990-91<br />

Sources: CDC, NHANES, McDonald, Noreen (<strong>2007</strong>); r=-0.63<br />

2001<br />

18%<br />

16%<br />

14%<br />

12%<br />

10%<br />

8%<br />

6%<br />

4%<br />

2%<br />

0%<br />

percent of children who are obese<br />

IMPACTS OF CYCLING & WALKING ON PUBLIC HEALTH<br />

93<br />

Bicycling & <strong>Walking</strong> in the U.S./ Thunderhead <strong>Alliance</strong> <strong>2007</strong>

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