Dietary Tips and Rationale

Explanation of Dietary Guidelines

ExRx.net > Diet > Outline

Eat meals and snacks at regular times every day

Rationale

See Possible Strategies

  • Less tendency to over eat next meal
    • Particularly if meal has higher fat
    • Less probability to eat easily accessible calorie dense snacks
  • Regular eating may keep metabolism high
    • Particularly digestion of higher fiber foods
    • Thermoneogenesis: calories converted to body heat
  • Maintains energy levels throughout day
    • Potentially higher caloric expenditure during activity
  • Improve serum profile
    • Reduced fasting circulatory concentrations of cholesterol, low-density-lipoprotein (LDL), and apolipoprotein B (Jenkins 1989, Jones 1993)
    • Reduced circulating insulin concentrations (Jenkins 1989. Jones 1993)
  • Reduced mean 24-hour urinary cortisol excretion (Jenkins 1989)
  • Possible decrease of BMI and waist circumference over time
    • Girls with a lower initial frequency of eating had greater increases in BMI and waist circumference across 10 years of adolescence (Ritchie 2012).

Counter Argument

Eating a high fat, low carbohydrate diet offers longer satiety thus frequent feedings are not required.

Eat higher carbohydrates meal (with protein) very soon after exercise

Rationale

See Guidelines

  • Improves post workout recovery (Niles 2001)
    • Faster rate of muscle glycogen re-synthesis
      • 50% more glycogen can be stored (Friedman 1991)
    • Improved performance in subsequent exercise
    • Less muscle damage
  • Increased protein synthesis
    • Nearly 3 fold increase (Levenhagen 2001)
    • Decreases post exercise cortisol levels
  • Increase lean muscle mass (Esmarck 2001, Holm 2004)
  • Decreases risk of injury (Flakoll 2004)

Counter Argument

  • Ingestion of sugar (glucose) has shown to acutely depress testosterone by 25% (Iranmanesh 2012, Caronia 2013).

Eat fruits or vegetables

Eat high fiber foods

Possible Strategies

Moderate dietary fat

Rationale

Possible Strategies

Counter Arguments

Limit sugar consumption

Possible Strategies

Eat a variety of foods

  • Better ensures ingestion of all essential nutrients
  • Decreases risk of developing food intolerances

References

Caronia LM, Dwyer AA, Hayden D, Amati F, Pitteloud N, Hayes FJ (2013). Abrupt decrease in serum testosterone levels after an oral glucose load in men: implications for screening for hypogonadism. Clin Endocrinol (Oxf). 78(2):291-6

Hämäläinen E, Adlercreutz H, Puska P, Pietinen P (1984). Diet and serum sex hormones in healthy men. J Steroid Biochem. 20(1):459-64.

Iranmanesh A, Lawson D, Veldhuis JD (2012). Glucose ingestion acutely lowers pulsatile LH and basal testosterone secretion in men. Am J Physiol Endocrinol Metab. 302(6):E724-30.

Jenkins DJ, Wolever TM. Vuksan V, et al (1989). Nibbling versus gorging: metabolic advantages of increased meal frequency. N EngI J Med. 321, 929-34.

Jones PJH. Leitch CA. Pederson RA (1993). Meal-frequency effects on plasma hormone concentrations and cholesterol synthesis in humans. Am J Clin Nutr. 57, 868-74.

Ritchie LD (2012). Less frequent eating predicts greater BMI and waist circumference in female adolescents Am J Clin Nutr. 95(2), 290-6


Main Menu | Dietary Guidelines | Progressive Diet Goals | Nutrition Titles