Table 4: Dietary intake as reported from two- or three-day diet records for 75 patrollers, instructors, and lift operators at five ski resorts in Western Canada during the first year of the study. Data is represented as mean ± SD. The Recommended Dietary Allowance (RDA) is provided for comparison [24].

PatrollersInstructorsLift opsRDA
MenWomenMenWomenMenWomenMenWomen

Kcal 2700 kcal2100 kcal
Protein (g) 0.8 g/kg body wt
Carbohydrate (g) >130 g
Total fat (g) <25–35% calories
Saturated fat (g) <7% caloric intake
Monounsaturated fat (g) <10–25% calories
Polyunsaturated fat (g) <8–10% calories
Trans fatty acid <1% caloric intake
Omega-6 linoleic acid (g) 17 g12 g
Omega-3 linolenic acid (g) >1.6 g>1.1 g
Cholesterol (mg) <200–300 mg
Total fiber (g) >38 g >25 g
Total sugar (g) <25% caloric intake
Total water (L) 3.7 L2.7 L
Thiamin (mg) 1.2 g1.1 g
Riboflavin (mg) 1.3 mg1.1 mg
Niacin (mg) 16 mg14 mg
Vitamin B6 (mg) 1.3 mg
Vitamin B12 (mcg) 2.4 mcg
Folate (DFE) (mcg) 400 mcg
Vitamin C (mg) 90 mg 65 mg
Vitamin D (IU) 600 to 4000 IU
Vitamin A (RAE) (mcg) 900 mcg RAE 700 mcg RAE
Alpha-tocopherol (Vit E) (mg) 15 mg
Calcium (mg) 1000 mg
Iron (mg) 8 mg18 mg
Magnesium (mg) 420 mg320 mg
Potassium (mg) >4700 mg
Zinc (mg) 11 mg 8 mg
Sodium (mg) <2300 mg

Exceeds the RDA for good health, does not meet the lower limit of RDA for good health.