Lecture 12 Flashcards
Anaerobic threshold:
Wkld causing a rapid increase in blood lactate indicating the upper limit of equilibrium b/w blood lactate production and clearance
Can be identified form the inflection point of either [lactic acid] or the VE/VO2 ratio
Ventilatory threshold:
Point at which Ve and co2 output begin to increase exponentially
Lactate threshold:
1st wkld at which there is a sustained increase in blood lactate above resting values
Anaerobic threshold represents…
The highest intensity of ‘sustainable’ ex
Interval training
Organising ex into intermittent bouts of higher and lower intensity efforts rather than one continuous bout
Interval training adv
Enable an accumulation of a greater training stimulus at high ex intensities
Interval training options
Work interval duration Work intensity Recovery interval duration Recovery intensity Total work duration
vVO2max (velocity achieved at vo2max) =
a function of an indv’s vo2max and ex economy
has shown to be an important determinant of endur performance
training can increase vvo2max w/out change in vo2max
Children
6-17years
physiologically adaptive to endur ex training, RT and bone loading ex
physiologic responses to actute, graded ex are qualitatively similar to those seen in adults
children ex physiological responses:
absolute o2uptake – lower relative o2 uptake – higher HR – higher Q – lower SV – lower Systolic BP – lower Diastolic BP – lower Respiratory rate – higher Tidal volume – lower Minute ventilation – lower Respiratory exchange ratio – lower
Children aerobic exercise
Daily, mod-vig 3d/wk, >60min, running, dancing, active play
Children muscle strengthening ex
3d/wk, part of 60min ex, structure e.g. weights or unstructured e.g. tug of war
bone strengthening ex children
3d/wk, part of 60min, running, jumping, tennis
Pregnancy ExRx
Acute physiological responses to ex are generally increased during pregnancy
Ex encouraged where contraindications are not present
Regular ex during pregnancy provides health/fitness benefits to mother and child
May also reduce risk of dev conditions associated w/ pregnancy e.g. pregnancy-induced hypertension, gestational diabetes mellitus
Relative contraindications pregnancy *
Sever anemia Unevaluated maternal cardiac dysrhythmia Chronic bronchitis Poorly controlled type 2 DM Extreme morbid obesity Extreme underweight Hx of extremely sedentary lifestyle Intrauterine growth restriction in current pregnancy Poorly controlled hypertension Orthopedic limitations Poorly controlled seizure disorder Poorly controlled hyperthyroidism Heavy smoker
