DIETARY REFERENCE INTAKES FOR PREGNANCY

TABLE B-1A Equations to Estimate Energy Requirement for Pregnant Women by Trimester

Estimated Energy Requirement (kcal/day) = Nonpregnant EER + Pregnancy Energy Deposition

1st trimester

EER = Nonpregnant (adolescent or adult) EER + 0

2nd trimester

EER = Nonpregnant (adolescent or adult) EER + 340

3rd trimester

EER = Nonpregnant (adolescent or adult) EER + 452

NOTE: EER = Estimated Energy Requirement. Use equations in Table B-1B to calculate non-pregnant EER. EER for adult women should be used for ages 19-50 years; EER for adolescent girls should be used for ages 9-18 years

SOURCE: IOM, 2006.

TABLE B-1B Equations to Calculate Estimated Energy Requirement (EER) for Nonpregnant Adolescents or Adult Women

14-18 Years of Age

Estimated Energy Requirement (kcal/day) = Total Energy Expenditure + Energy Deposition

EER = 135.3 − (30.8 × age [y]) + PA × [(10.0 × weight [kg]) + (934 × height [m])] + 25

19 Years and Older

Estimated Energy Requirement (kcal/day) = Total Energy Expenditure

EER = 354 − (6.91 × age [y]) + PA × [(9.36 × weight [kg]) + (726 v height [m])]

NOTE: PA = Physical Activity Coefficient. Use equations in Table B-1C to calculate PA.

SOURCE: IOM, 2006.

TABLE B-1C Physical Activity Coefficients (PA values) for Use in EER Equations for Adolescents or Adult Women

 

Sedentarya (PAL 1.0-1.39)

Low Activeb (PAL 1.4-1.59)

Activec (PAL 1.6-1.89)

Very Actived (PAL 1.9-2.5)

14-18 Years of Age

1.0

1.16

1.31

1.56

19 Years and Older

1.0

1.12

1.27

1.45

NOTE: PAL = Physical Activity Level.

aE.g., typical daily living activities (e.g., household tasks, walking to the bus).

bE.g., typical daily living activities PLUS 30-60 minutes of daily moderate activity (e.g., walking at 5-7 km/h).

cE.g., typical daily living activities PLUS at least 60 minutes of daily moderate activity.

dE.g., typical daily living activities PLUS at least 60 minutes of daily moderate activity PLUS an additional 60 minutes of vigorous activity or 120 minutes of moderate activity.

SOURCE: IOM, 2006.



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