Nutrition & The Athlete Flashcards
______ are primary fuel source for cells (glucose)
Carbs
Simple carbs = ___
Monosaccharides
Complex carbs = _____
Disaccharides
T/F: carbs are required for aerobic and anaerobic systems
TRUE
What is the storage form of carbs?
Muscle glycogen
What is the only food source the brain requires?
Carbs
How many calories/gram: CARBS
4 cal/g
What is the greatest food source of potential energy?
FAT
Triglycerides break down into ____ and ____
Glycerol, FFA
How many calories/gram: FAT
9 cal/g
Protein building blocks = _____
Amino acids
What food source is an energy source for sustained activity?
protein
How many calories/gram: PROTEIN
4 cal/g
T/F: Fitamins and minerals are key to biochemical rxns to break food but do NOT provide energy
TRUE
ATP: 1 mol = _____ kcal of energy
7.3
How many ATP form from 1 molecule of glucose (glycolysis)
36
Stored form of energy in a high concentration is
CP or PCr
PCr provides energy for _____
ATP resynthesis
what is a MET and what is it used for?
Metabolic equivalent (aka REE) used to estimate energy cost of activity
________ are based on rate of effort and type of sport
MET equivalents
T/F: By using METS you can determine caloric expenditure
TRUE
Which energy system does not require O2?
ATP-PCr
Which energy system is for high power, low capacity?
ATP-PCr
Which energy system requires O2
Aerobic
Anaerobic system is aka ____
Lactic acid system
Exercise Intensity at <30% VO2max uses this fuel source
Predominantly muscle fat stores
Exercise Intensity at 40-60% VO2max uses this fuel source
Fat and CHO evenly
Exercise Intensity at 75% VO2max uses this fuel source
Predominantly CHO
Exercise Intensity at >80% VO2max uses this fuel source
100% CHO
Adolescent athletes (and younger) have RDA for calories at a minimum of ______ cal/kg
30-40 cal/kg (average)
Adolescent athletes protein intake RDA is _____ g/kg
1.2-2.0 g/kg
Female athlete: DRIs of key minerals (due to increased need or decreased intake) include these 4 minerals and what dosage?
- Calcium (1000mg; 1200mg >50 yo)
- Iron (18 mg)
- Zinc (8 mg)
- Vit D (600 IU)
6 things that could result from decreased micronutrient intake and decreased energy intake in female athletes
- Decreased bone density
- Impaired immune response
- Menstrual dysfunction
- Anemia
- Poor exercise performance
- Increased recovery time from injury
What is the Female Athlete Triad
- Energy availability (EA)
- Menstrual Function
- Bone health/density (declines –> osteopenia/porosis)
ACSM Evidence Statements:
Under nutrition impairs ____ and ____ health
Reproductive and bone
ACSM Evidence Statements:
Menstrual irregularity and decreased MBD increase risk of _______
Stress fx
Triad occurs most often in sports that emphasize ______
Leanness
What similar conditions can be seen in males to the female athlete triad?
- Low energy availability (EA)
- Low BMD
- Low testosterone
Diet and exercise is best with ___
Behavior modification
BMI does or does not account for LBM?
does NOT
How many cal = 1lb fat?
3500
How to gain weight?
- Calorically dense diet using all sources of energy
- Limited aerobic activity
- Strength/resistance training
What is REE
Resting energy expenditure
How is REE measured
Indirect calorimeters (metabolic cart) via RQ, equations, or body comp measurements
What is TEE
Total expenditure
TEE equation
TEE = REE + activity factors (%REE)
Sedentary = ? (In reference to REE)
20% + REE
Moderate (4-5x/wk) = ? (In reference to REE)
45% REE
High intensity = ? (In reference to REE)
60-100% REE
Protein RDA for normal (non-active)
0.8g/kg
RDA for protein for strength athletes
1.5-2.0 g/kg