Here is a step-by-step estimate of the amount of glucose an average male consumes in an hour:

  1. Estimate the person’s basal metabolic rate (BMR). This is the minimum number of calories needed to sustain vital bodily functions at rest. For a male of average height and weight, the BMR is approximately 1,800 calories per day.

  2. Divide the BMR by 24 hours to get the hourly energy expenditure. 1,800 / 24 = 75 calories per hour.

  3. Glucose provides about 4 calories per gram. So if all calories came from glucose, the person would use about 18 grams per hour (75 calories / 4 cal/g = 18 g).

  4. However, the body uses a mix of nutrients for energy, not just glucose. Glucose may provide around 50% of resting metabolic calories.

  5. Therefore, if 50% of the 75 calories per hour are from glucose, that equals 37.5 calories from glucose per hour.

  6. With 4 calories per gram of glucose, 37.5 calories equals about 9 grams of glucose consumed per hour (37.5 cal / 4 cal/g = 9 g).

In summary, a rough estimate is that an average male at rest consumes approximately 9 grams of glucose per hour to meet 50% of basal metabolic energy requirements. This will vary based on the individual’s exact weight, body composition, and metabolic rate.

  • PumpkinDrama@reddthat.comOPM
    1·
    1 year ago

    Here is an estimate and generalized formula for how long to walk to burn the calories from carbohydrates in bread:

    • 100g of bread has about 50g of carbohydrates
    • Each gram of carbohydrates has 4 calories
    • So 100g of bread has about 200 calories from carbohydrates (50g * 4 cal/g)
    • Walking burns approximately 300 calories per hour for a 155 lb (70 kg) person
    • So to burn 200 carb calories from 100g of bread, you’d need to walk about 40 minutes (200 cal / 300 cal/hr)

    The generalized formula is:

    Walk time (min) = (Grams of carbs * 4 cal/g) / (Walking calorie burn rate per hour / 60 min/hr)

    Where:

    • Grams of carbs is the amount of carbohydrates in the food
    • 4 cal/g is the number of calories per gram of carbohydrates
    • Walking calorie burn rate per hour is your personal calorie expenditure per hour of walking, often estimated around 300 cal/hr

    So for X grams of carbohydrates, the formula is:

    Walk time (min) = (X g * 4 cal/g) / (300 cal/hr / 60 min/hr) = (X * 4) / 5 = 0.8 * X minutes

    Therefore, the general rule of thumb is you’d need to walk about 0.8 minutes for every gram of carbohydrates to burn those calories through walking. Of course, the exact amount can vary based on the food, the person, and pace of walking.