Health Promo Test 1 Flashcards
(285 cards)
CNS and fatigue
Fiber recruitment has conscious aspect:
Stress of exhaustive exercise may be too much
Subconscious or conscious unwillingness to endure more pain
Discomfort of fatigue = warning sign
Elite athletes learn proper pacing, tolerate fatigue
Time to fatigue changes with ambient temperatures
11C (52 F) time to exhaustion longest
31C (88 F) time to exhaustion shortest
Muscle precooling prolongs exercise
Systematic reduction of training duration and intensity combined with an increased emphasis on improving technique and nutritional intervention prior to competition
Tapering
Objective is to attain peak performance at the time of competition
Fartlek training
Combined methods of training Easy running (~70% VO2 max) combined with hills or short fast bursts (~85-90% VO2 max)
Can be adapted for running or swimming
Benefits:
Enhance VO2 max
Increase lactate threshold
Improved running economy and fuel utilization
High prevalence of inadequate intake of ____ in all subgroups.
All over age 2, mean intakes of ___ are below the DRI.
inadequate intake:
Vitamin E
Magnesium
Below DRI:
Fiber
Potassium
Ideally the majority of carbs consumed. Complex carb. High nutrition. Slow digestion
Polysaccharides
Several studies have shown that an athlete’s ___ appears to be a better indicator of his/her aerobic endurance performance than ____
Lactate threshold better indicator than VO2 max
Ranks carbohydrates on speed of digestion and absorption
Glycemic index
Fat soluble vitamins
A- vision and bone health
D- maintain calcium levels
E- antioxidant
K- essential for blood clotting
Adult guidelines for activity - for substantial benefits
At least 150 minutes a week of moderate intensity OR 75 minutes vigorous intensity Aerobic OR a combo
Aerobic activity should be performed in episodes of at least 10 minutes and should be spread throughout week.
Vitamins that are not stored in the body
Water soluble
Moderate exercise
70-80% VO2 max or HR reserve
80-90% HR max
One of the most commonly measured adaptations to aerobic endurance training is
An increase in maximal oxygen uptake associated with an increase in maximal cardiac output
Carb recommendations for exercise intensity/duration
Low intensity training:
3-5 g/kg per day
> 60 min low, 60 min moderate, or < 30 min vigorous:
5-7 g/kg per day
1-3 hours per day moderate to high intensity:
6-10 g/kg per day
4-5 hours per day moderate to high intensity:
8-12 g/kg per day
Phosphorus…
Transports lipids
The average daily nutrient intake level considered sufficient to meet the needs of half of the healthy population within each life stage and sex
EAR: estimated average requirement
Hyperhydration signs/symptoms
Confusion Inattentiveness Blurred vision Muscle cramps/twitching Poor coordination Nausea/Vomiting Rapid breathing Weakness Acute weight gain
HIIT
Repeated high intensity bouts interspersed with brief recovery periods
Need to spend several minutes above 90% VO2 max for optimal stimulus
May be effective for improving running economy and running speed
Ex: Long-interval HIIT 2-3 min at 90% VO2 max withrelief bouts of = or < 2 min
___ of the top 10 causes of death in 2010 were chronic diseases.
___ and ____ combined accounted for nearly 48% of all deaths
7 of the top 10
Heart disease and cancer (48%)
Basic guidelines of TLC diet
Cholesterol intake kept below 200 mg day
Sodium limited to 2400 mg day
25-35% total calories should come from fat intake
Caloric intake should be level to maintain healthy weight
Physical activity must be maintained regularly (at least 30 min daily)
Aerobic exercise is recommended ___ per week
Significant improvements occur with ___
Plateau in improvements with..,
3-5 days per week
Significant improvements with > 3 days per week
Plateau with > 5 days with vigorous intensity and the same mode
Modifying intensity and mode will allow for daily training for some adults
DRI components (4 of the 6)
RDA: recommended dietary allowance
AI: adequate intake
UL: tolerable upper intake level
AMDR: acceptable macronutrient distribution range
Lactic acid accumulates during brief, high intensity exercise
If not cleared immediately, converts to lactate H ion
H ion accumulation causes decreased muscle pH (acidosis)
Buffers help pH but not enough
pH < 6.9 inhibits glycolytic enzymes, ATP synthesis
pH = 6.4 prevents glycogen breakdown
1 MET is = to ___ oxygen consumption
3.5 mL/kg x min