Table 3.
Baseline energy intake, total water intake and estimated total water requirements by body mass index (BMI) in 247 subjects recruited from 8 long-term care facilities.
| BMI Category | N | Energy Intake (kcal/d) | Total Water Intake (mL/d) | Estimated Total Water Requirement
|
||
|---|---|---|---|---|---|---|
| Lineara | Adjustedb | IOMc | ||||
| Underweight (BMI <18.5) | 18 | 1514.6±711.3 | 942.5±383.7 | 1533.3±94.9 | 1856.8±111.1 | 2950.0±447.2 |
| Normal (BMI 18.5–24.9) | 120 | 1590.1±468.1 | 1113.5±416.6 | 1680.5±203.4 | 2028.3±114.5 | 2913.7±411.7 |
| Overweight (BMI 25–29.9) | 70 | 1528.5±502.8 | 1196.6±411.3 | 2030.0±257.8 | 2215.0±128.9 | 2917.4±415.5 |
| Obese (BMI 30–39.9) | 30 | 1552.4±563.8 | 1290.4±537.9 | 2511.1±363.5 | 2455.5±181.7 | 2892.3±401.9 |
a
Linear formula: 30 ml/kg body weight (minimum of 1500 mL/day).
b
Adjusted formula: sum of 100 ml water/kg for the first 10 kg of actual body weight, 50 ml water/kg for the next 10 kg, and 15 ml water/kg for the remaining kg of weight.
c
IOM=Institute of Medicine formula: adequate intake = 2700 mL/d for females and 3700 mL/d for males.