aacvpr 2006

WAIST-TO-TALLNESS RATIO AS A MARKER OF CARDIOVASCULAR DISEASE RISK IN PRIMARY PREVENTION. Robert C. Lowe, MA 1 , Debbie Zimmerman, MBA 1 , and Philip Chen, MD, PhD 2 1 Polk County School Board, Winter Haven, Florida and 2 Cognoscenti Health Institute, Orlando, Florida. Introduction Recent research has suggested that Waist-To-Tallness Ratio (WTR) has greater specificity and sensitivity for overall-cardiovascular disease (CVD) risk than either body mass index (BMI) or waist circumference (WC). Schneider, et al. (2005) recently reported a cut-off value for WTR of 0.53 for women and 0.55 for men. Purpose To determine whether WTR is a useful marker of CVD risk in primary prevention. Methods Adults (n = 887; AGE = 46.6 ± 11yrs) completed a smoking (SMOKE), heart disease (CVD), diabetes (DM) and physical activity (PA) survey at a wellness screening. Height, weight, WC, systolic blood pressure (SBP), diastolic blood pressure (DBP), and percent body fat (%BF) were measured; BMI and WTR were calculated. Differences between genders for CVD risk were explored by one-way ANOVA; differences between gender cut-points and WTR were compared by one sample t-test; significance was set at P < 0.05.. Conclusions Both males and females were at increased risk for CVD based on WTR cut-points suggested by Schneider, et al. (2005) despite WC being below current cut-points. The greater WTR cut-point in males was associated with increased BMI, SBP, and DBP compared to females. These results suggest WTR alone may not adequately predict overall CVD risk in adults. In addition, it may be useful to consider gender differences when designing primary prevention interventions to reduce overall risk for CVD. - For further information please contact: Robert Lowe, M.A., FAACVPR [email protected] ABCs of Health Results (P < 0.05). Both male and female WC (100.6 ± 14 cm and 86.2 ± 16 cm, respectively) was below current cut-points. Females had increased %BF compared to males (35.2 ± 7% vs. 27.0 ± 7%). Males had gr 872 613 881 884 887 877 862 875 885 887 887 subjects 0.000 0.000 0.000 0.000 0.000 0.000 0.007 0.069 0.060 0.000 0.000 p value 0.88** 0.64** 0.31** 0.37** 0.81** -0.13** 0.09** 0.06 0.06 0.14** 0.19** Pearson Correlation BMI Body Fat Diastolic BP Systolic BP Weight Physical Activity Diabetes History Heart Disease History Smoking History Gender Age Table 1. Bivariate correlations between Waist to Height Ratio and selected variables. **Correlation is significant at the 0.01 level (2-tailed)

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WAIST-TO-TALLNESS RATIO AS A MARKER OF CARDIOVASCULAR DISEASE RISK IN PRIMARY

PREVENTION. Robert C. Lowe, MA1, Debbie Zimmerman, MBA1, and Philip Chen, MD, PhD2

1Polk County School Board, Winter Haven, Florida and 2Cognoscenti Health Institute, Orlando, Florida.

Introduction

Recent research has suggested that Waist-To-Tallness Ratio (WTR) has greater specificity and sensitivity for overall-cardiovascular disease (CVD) risk than either body mass index (BMI) or waist circumference (WC). Schneider, et al. (2005) recently reported a cut-off value for WTR of 0.53 for women and 0.55 for men.

Purpose

To determine whether WTR is a useful marker of CVD risk in primary prevention.

Methods

Adults (n = 887; AGE = 46.6 ± 11yrs) completed a smoking (SMOKE), heart disease (CVD), diabetes (DM) and physical activity (PA) survey at a wellness screening. Height, weight, WC, systolic blood pressure (SBP), diastolic blood pressure (DBP), and percent body fat (%BF) were measured; BMI and WTR were calculated. Differences between genders for CVD risk were explored by one-way ANOVA; differences between gender cut-points and WTR were compared by one sample t-test; significance was set at P < 0.05..

Conclusions

Both males and females were at increased risk for CVD based on WTR cut-points suggested by Schneider, et al. (2005) despite WC being below current cut-points. The greater WTR cut-point in males was associated with increased BMI, SBP, and DBP compared to females. These results suggest WTR alone may not adequately predict overall CVD risk in adults. In addition, it may be useful to consider gender differences when designing primary prevention interventions to reduce overall risk for CVD.

For further information please contact:Robert Lowe, M.A., FAACVPR

[email protected]

ABCs of Health

Results

> 0.05). Females were more likely to have a family history of CVD and DM (P < 0.05). Both male and female WC (100.6 ± 14 cm and 86.2 ± 16 cm, respectively) was below current cut-points. Females had increased %BF compared to males (35.2 ± 7% vs. 27.0 ± 7%). Males had greater BMI (30.2 ± 7 vs. 29.0 ± 5), SBP (131 ± 15 mmHg vs. 124 ± 17 mmHg) and DBP (83 ± 10 mmHg vs. 79 ± 10 mmHg) compared to females (all P < 0.05). Male WTR (0.57; P < 0.05) was greater than cut-point and female WTR (0.53; P = 0.37) equaled cut point

872613881884887877862875885887887subjects

0.0000.0000.0000.0000.0000.0000.0070.0690.0600.0000.000p value

0.88**0.64**0.31**0.37**0.81**-0.13**0.09**0.060.060.14**0.19**Pearson Correlation

BMIBody FatDiastolic BP

Systolic BPWeight

Physical Activity

Diabetes History

Heart Disease History

Smoking HistoryGenderAge

Table 1. Bivariate correlations between Waist to Height Ratio and selected variables.

**Correlation is significant at the 0.01 level (2-tailed)

2006-09 september 2006