Ch1 Flashcards
____ science describes, explains, and uses bodys response to exercise to maximize human potential/
basic [exercise physiology]
___ science describes, explains , and uses bodys adaptation response to exercise training to improve human physical potential
applied [exercise physiology]
studies how body’s structures and functions are altered when exposed to acute and chronic bouts of exercise
exercise physiology
applies exercise physiology concepts to an athletes training for performance/competition
sport physiology
-maintenance of a constsant internal environement with unstressed conditions and dynamic constancy
homeostasis
balance between demands placed on body and the physiological response to those demands
steady state
- contracting muscles
- heat build up
- plateau point - SS but not homeostasis where balance betwen heat generated and heat released is conduction/sweating
steady state submaximal exercise
goal of control sys of the body
=regulate some physiological variable at or near constant value to maintain homeostasis, not absolutely constant/ variations around set point of dynamic consistency
series of interconnected components that serve to maintain a physical or chemical parameter at or near constant
biological control systems
biological control systems include __,__,and ___
receptor , integrating center, effector
capable of detecting changes
receptor (bio control sys)
assesses input and initiates response
integrating center (bio control sys)
corrects changes to internal environment and removing stimulus
effector (bio control sys)
most biological control systems ____ the inItial distubrance in homeostasis with negative feedback (opposite to stimulus)
REVERSES
- DEGREE TO WHICH CONTROL SYS MAINTAINS CONTROL
- system with large gain is more capable of maintaining homeostasis
- SYS W/ SMALL GAIN IS LESS CAPABLE OF MAINTAINING HOMEOSTASIS
gain of a controls ystem such as reg of BP
- exercise in hot/humid environ
- may not be able to maintain steady state
- severe disturbances in homeostasis can occur /fatigue
maximal exercise
\_\_ exercise -lactic acid -> acidosis -inc in CO2 production, inc in O2 RESULTS IN -inc heart rate, blood flow and pulmonary ventilation
Heavy
During 60 minutes of submaximal exercise, the body temperature reaches a plateau after 35-45 minutes, this is an example of
steady state
changes in arterial blood across time during resting conditions is an example of
homeostasis
overall goal of a control sys is to regulate a physiological variable
at or near a constant value
decreasing the original stimulus that triggered the control system is called
negative feedback
the precision with which a control system maintains homeostasis is called
gain
Severe disturbances in homeostasis result in fatigue and ultimately
cessation of exercise
during heavy exercise or exercise in hot/humid environ, you may have…
disturbances in internal environm disruption of steady state and rapid responses of control systems
