Tuesday, January 9, 2018

Assignment #3: Nutrition as a science


See Ch 1, pages 12-17.  NOTE, Nutrition is a science, and it is studied in the same manner as any scientific endeavor.  Thus, the scientific method still applies.



Several of you have noted you want to be able to determine if a particular diet (fad or otherwise) is beneficial or harmful.  How would you apply the scientific method to this problem? 



To think more deeply about these concepts, each of you must pick a diet.  It can be any type of diet (weight loss, muscle gain, “the bean only” diet, etc).  Each diet can only be used ONCE.  So, once someone has used one, it can’t be evaluated again.  There are tons available on the internet, but, magazines are loaded with them—especially the Women’s World type of magazines. 



In your blog post, list the name of the diet and the general requirements of the diet.

Then, propose and describe each of the following that would be used to evaluate the diet:

1.      An epidemiological study

2.     A laboratory-based study

3.     A human intervention or clinical trial

Your goal is to describe 3 distinct research studies you would do to evaluate the chosen diet. Be sure to use the glossary of research terms in the text and use these terms correctly.

11 comments:

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    1. Don't include text/information from the assignment as I posted. It's difficult to see your answer to the question. This answer lacks detail--delete and try again

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  3. The Zone Diet
    The Zone diet aims for a nutritional balance of 40 percent carbohydrates, 30 percent fats, and 30 percent protein in each meal. The focus is also on controlling insulin levels, which may result in more successful weight loss and body weight control than other approaches.
    The Zone diet encourages the consumption of high-quality carbohydrates - unrefined carbohydrates, and fats, such as olive oil, avocado, and nuts.

    1.      An epidemiological study
    research based study on control of disease in a population that include cross section, case control, and cohort studies.
    I don’t see this type of research working for diets due to the fact that it cant control variables and cannot prove cause and effect.
    Cohort study could possibly be used when evaluating the Zone Diet especially when focusing on insulin levels.

    2.     A laboratory-based study
    I’d think about using an animal study
    The lab could be used to look at how nutritional balanced diets work in an animal and how it effects their health compared to an animal who's nutritional intake is not balanced.

    3.     A human intervention or clinical trial
    - Clinical trials would be most effective in seeing possible results coming from the zone diet. There is the ability to have a control and experiment group, one group that follows the diet, and another that doesn’t, or simply just follow those who are on the zone diet and do a longitudinal study on their weight loss, eating habits, and overall health.

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  4. Flat Belly Diet
    This diet is centered around monounsaturated fatty acids (MUFA) and a person should lose about 15 pounds in 32 days.This diet has two parts. The first part is an anti-bloat jump start and the second part is a four week eating plan.You have to eat one MUFA per meal and build your meals around fruits, veggies, legumes, whole grains, olive oil, and fish. You must also stick to four grams or less of saturated fats per meal.

    Epidemiological Study
    I think using a cohort study could work in this diet. I would look at the effects the food eaten has on the body. I would basically be looking at if the food eaten does what it supposed to do for the body.

    Laboratory-Based Study
    I would use animals and put them on this diet and evaluate the effects. I would compare it to the natural fiet of that specific animal.

    Human Intervention or Clinical Trials
    I would choose about 15 females to try this diet and record their results and what foods they ate. I would see if some people made better choices than others and see if they all lost about the same amount of weight.

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    1. These fad diets make me want to scream :-/

      Review what you need to do for an epidemiological study and resubmit answer.

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  5. Sprinters, Hurdlers, Jumpers Rebuild and Recovery Diet

    As speed and power athletes, you need to consume adequate calories with a balance of protein/amino-acids, fats, and carbohydrates. This diet focuses on pre-workout, post-workout, and mid-workout meals. Recovering by getting you glycogens replenished while intaking proteins for amino acids, this will help build up muscle right afterwards

    Epidemiological Study
    Definitely more effective for setting a reference diet. If you just take a look at the worlds best sprinters and hurdlers and jumpers and compare them to everyday people or even less successful athletes with the same age build and height. This would fall a little short do to all the many other variables that factor into athletically ability that cant be measured for example mindset. This still could be effect for setting a baseline reference.

    Lab Study
    Feed one athlete proper nutrients and feed another food substitutes the meet same nutritional requirements but may have a lower nutrient density. Or feed an athlete properly for a certain amount of time then cut them and feed them less nutritiously and see how that impacts there performance. Then monitor their performances and growth as well as how long the performance stays a certain level or how much growth is achieved. Using heart rate, speed, and power measuring instruments while athlete is on a treadmill or stationary exercise machine.

    Human Intervention
    Unfortunately with a diet like this one because the results would be based on athletic performance, this method would be very very similar to lab one. The only main difference would be is not you would be measuring mainly on performance improvements or compare performance between a large group and see if there was any correlation between health eating before after and during workout and performance level.

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    1. Difference here is the massive numbers to evaluate a diet in a huge population (ie epidemiological study). For the lab study, you still need more than 1 subject. Increasing subject numbers improves data analysis, stats, etc proportional to the number in the study in most cases (keeping it simple in this description)

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  7. Joseph Hess

    Muscle Gain
    Eat about 2-3 grams of carbohydrates per pound of your bodyweight each day.
    Protein is the most critical macronutrient for muscle growth with carbohydrates as a close second.

    You also have to lift if you don’t lift then you won’t be able to build muscle and also get the right amount of sleep to let your body rejuvenate and heal itself so you can put on lean muscle mass
    1. An epidemiological study
    They determine the incidence and distribution of diseases in a population. Epidemiological studies include cross-sectional, case-control, and cohort.
    2. A laboratory-based study
    They explore the effects of a specific variable on a tissue, cell, or molecule. Laboratory-based studies are often conducted in test tubes or on animals.

    3. A human intervention or clinical trial
    They involve human beings who follow a specified regimen.


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  8. Weight loss diet
    *have a healthy diet
    *keeping an eye on portion consumption
    *eating mindfully
    *not overeating
    How you can lose weight is by staying active through out the week wether it’s playing basketball and even lifting as long as your doing something that keeps your body moving you will lose weigh and meet your goal, eating right following through with your diet diet consume more water so you can burn through the water weight and rest.

    1.      An epidemiological study
    Determines the incident and distribution of diseases in a population . Epidemiological studies include cross sectional case control

    2.     A laboratory-based study
    Explore the specific variable on a tissue, cell or molecule. Laboratory based experiments are mostly conducted in test tubes or on animals.

    3.     A human intervention or clinical trials
    Humans beings following a specific regiment.

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