Basal Metabolic Rate of Body Essay

Basal Metabolic Rate has been defined as the minimum amount of energy needed by an animal to maintain the basic functions of survival (such as breathing). Several factors including age, gender, weight, and exercise affect the BMR. “BMR increases with increasing muscle tissue” therefore, exercising will enhance BMR while with increasing age, BMR is reduced (Scott, 2008). Also gender differences exist between males and females; it has been shown that males have higher BMRs than females.

Several methods can be utilized to calculate the BMR. Indirect calorimetr uses expired gases to calculate the amounts and types of fuel being utilized”, while the less accurate methods include carious formulas (Kelly, 2013). Methods: For this lab, various human male and female weight, height, and age fake datas were used to determine/calculate BMR. Different formulas were used for males and females. The BMR formulas use S. I. units and therefore, the units obtained were converted. Excel was used to calculate the BMRs in kcal/day. Results: Attached on the back of this page

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Discussion: The BMR calculated for males and females were determined and it was shown that generally, females have less BMR values compared to males (Refer to Table I and II). ” The female surface-related BMR values are approximately 10% below the male values through life” (Zubieta, 2002). On the other hand, the various categories affecting BMR were also evaluated by specific measurements of height, weight, and age for each gender. The data illustrates that with increasing height, the BMR increases as well (Graph 1).

The mean height for males is higher than the mean height for females resulting in males having higher BMRs. The BMR also increases with increasing weight (Refer to Graph 2). However, with increasing age, the BMR decreases (refer to Table I and II). The height and weight measured should not be considered precise because the measurement devices might be different or error might occur during reading of measurements. Questions: 1. Precision can be defined as a degree to which a measurement can give the same value if repeated while accuracy is the degree in which a value measured is close a given/defined value. . The results section provides the information obtained from the experiment.

Yet, the discussion section talks about the results obtained and talks about the results in context of others might have found. Results are compared with expectations. 3. The kinds of information that need to be referenced in a lab report are specific statements which are not common knowledge but rather obtained through experiments or research. Therefore, common facts or knowledge do not need to be referenced.

References:

Scott, J. (2008). Basal metabolic rate. Retrieved from http://weightloss.about.com/od/glossary/g/blbmr.htm

Kelly, M. (n.d.). Resting metabolic rate: Best ways to measure it—and raise it, too. Retrieved from http://www.acefitness.org/certifiednewsarticle/2882/resting-metabolic-rate-best-ways-to-measure-it-and/?CMP=EMC-CertifiedNews_0912

Zubieta-Calleja, G., & Paulev, P. (2004). New human physiology. (2nd ed.). Copenhagen: Retrieved from http://www.zuniv.net/physiology/book/index.htm

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