Chapter 10: Ergogenic Sports Supplements Flashcards
Naturally occurring substance from leucine
HMB
_ % of leucine is converted to HMB in the body
Effective?
5%
Yes
Functions of _:
Stabilize cell membrane of muscles
Stimulate protein synthesis by activation of mTOR pathway
Decrease protein breakdown
HMB
Provides substrate for cholesterol synthesis needed to form and stabilize the muscle cell membrane
HMB
Dose for HMB retention
Total per day
Multiple does of 1 gram during the day
3 g/day
_
Most powerful source of choline
Effective?
alpha-GPC
Too early to tell
Phospholipid, Derived from soy lecithin
Enhance cognition and boost athletic performance
Alpha- GPC
Plays a major role in fat and cholesterol metabolism
Increase hepatic fat oxidation
Mimic hormonal response to exercise
Alpha- GPC
_ vitally involved in muscle contraction and in regulating our physiological response to exercise
Acetylcholine
_ is a monosaccharide that provides the backbone to DNA, RNA
D-ribose
It is SPECULATED that _ :
Enhances exercise performance enhancing ATP resynthesis
Effective?
D-ribose
NO
_ linked to hypoglycemia and hyperuricemia
D-ribose
_ most abundant amino acid in the body
L-glutamine
Major site for glutamine synthesis and storage in human body 90%
Rest stored in:
Skeletal muscle
Lungs
_ stimulates protein synthesis and glycogen resynthesis after exhaustive exercise
NO ergogenic effect from supplementation
L-glutamine
Synthesis of _ is dependent mechanical activation of mTOR by resistance exercise
Oral supplement may augment signaling response when mTOR is activated by exercise
Effective?
Phophaditic acid
Too early to tell
Muscle pH buffer
Higher levels in elite athletes and body builders
Beta-alanine (carnosine)
Rate limiting precursor to carnosine within muscle fibers
Beta-alanine
_ supplementation:
Increase total work done
Improve endurance capacity
Increase lean body mass
Delay onset of fatigue
Beta-alanine
Side effect of beta-alanine
Effective?
Parasthesia (pins and needles)
Yes
Body water reduction of _ % adversely effects performance
2-3%
_ induces hyperhydration by inducing an osmotic gradient
Increase exercise performance
Hydration can be sustained for _ hours
Glycerol
Up to 49 hours
Side effects of _:
Nausea
Gastrointestinal discomfort
Dizziness
Headache
Glycerol
Glycerol
Grams?
Add to how much fluid?
How long before exercise?
1.2/kg
26 mL/kg of body weight
60 minutes