20. RDAs provide 4 sets of reference values, which are guidelines that recommend amounts of nutrients and other food components, needed to prevent deficiencies, avoid toxicities, and promote best health.
-Myth or Fact? I say fact.
29. Which of the following allows you to most healthfully increase the fiber in your diet?
a. oatmeal
b. white bread
c. potato chips
d. a hamburger
B?
Also, What would my target heart rate zone be if my maximum heart rate is 204?
Thanks
-MC
20. Hmmm. Obviously it is a fact.The issue is it a True fact, or a false fact. I judge it False. RDA carries many more than 4 reference values, see this chart http://www.time-to-run.com/nutrition/wp-content/uploads/1RDA1.gif
29. I cant beleive you asked that. Which would grandma feed you when you are sick in bed?
last one: I assume you are 17 yr old female. If your maximum heart rate is 204, you are likely undergoing atrial fibrillation, or near it, and you need to see a cardiologist immediately.
http://www.emedicinehealth.com/atrial_fibrillation/article_em.htm#Atrial%20Fibrillation%20Overview
see the charts here. http://www.heart.com/heart-rate-chart.html
I'm 16..don't you get your maximum heart rate by subtracting your age from 220? ...
-MC
Target heart rate zone= 104
-MC
That formula is widely discredited. I don't know what to tell you.
While the most common (and easy to remember and calculate), this particular formula is not considered by reputable health and fitness professionals to be a good predictor of HRmax. Despite the widespread publication of this formula, research spanning two decades reveals its large inherent error (Sxy = 7–11 b/min). Consequently, the estimation calculated by HRmax = 220 − age has neither the accuracy nor the scientific merit for use in exercise physiology and related fields.[6] http://en.wikipedia.org/wiki/Heart_rate
If you have a heart rate at 16, female, and you register 204, I would see a cardiologist for a check up. In women, artial fibrillation is a very common condition that leads to ...death...
Read about it.
So if 104 is what your book says, give it back to them as the "right" answer.
D:
-MC
I am not sure what you are looking for with "target heart rate." A normal heart rate for a 17yo and adults is 60-100. Above is termed tachycardia. Below is bradycardia. Generally, your base heart rate is lower the more fit and athletic you are. So, if I were looking for a "target" I would shoot for the normal range. Hope this helps.
For question 20, your answer that RDAs provide 4 sets of reference values that recommend amounts of nutrients and other food components for preventing deficiencies, avoiding toxicities, and promoting best health is correct. This is a fact.
For question 29, you are incorrect in choosing option B (white bread) as the most healthful way to increase fiber in your diet. The correct answer is option A (oatmeal). Oatmeal is a whole grain food that is naturally high in fiber, whereas white bread is made from refined grains and typically contains lower amounts of fiber. Increasing your intake of whole grains, like oatmeal, is a healthier choice for boosting fiber in your diet.
As for your target heart rate zone, it can be determined using the Karvonen formula. The formula is:
Target Heart Rate = ((Max Heart Rate - Resting Heart Rate) × %Intensity) + Resting Heart Rate
To calculate your target heart rate zone, you need to know your resting heart rate and the percent intensity you want to exercise at. The percent intensity can vary depending on your fitness goals. For example, if you want to exercise at a moderate intensity (50-70% of your maximum heart rate), you can choose a value within that range.
Let's assume you want to exercise at 60% intensity. If your maximum heart rate is 204, you need to know your resting heart rate to complete the calculation. Once you have that information, you can insert the values into the formula to find your target heart rate zone.
Please provide your resting heart rate so that I can assist you further in calculating your target heart rate zone.