Flashcards in Lecture 35 - Occupational and work physiology Deck (20):
what is the primary focus of work and occupational physiology?
ensure workers are physically capable of achieving their daily tasks without undue fatigue or risk of injury
how do you match job demands with physical capability?
alter the job tasks to fit the worker population
selection the worker to perform the task
train the work force
what is the first step in developing physical tests for job performance?
define job tasks - talk to experts
separate based on physiological capacities
measure different markers
In a load Carriage (march with 40kg pack), what is an appropriate intensity and why?
important to be able to complete sub-maximally as there may be battles along the way, need to have reserves for section attack (20-30 x10m bounds over 20 mins)
What are the factors affecting measurements of work rate
physical profile of the worker - VO2MAX, body mass, height
task paramenters - scenario, worker proficiency, motivation
true or false
HR overestimates VO2 max:
high thermal burden
work by small muscle groups
prolonged work at high intensity
measuring VO2max is better
uphill incline will increase __ ___ and downhill incline increases _____ work
uphill incline will increase work rate and downhill incline increases eccentric work
even quite light hilly terrain will increase work rate by quite a bit
If you weigh less you're at a disadvantage of performing army tasks as...
the weight you carry will have more of an impact on you VO2MAX
Male vs. female:
females are initially disadvantaged due to ___ ______
The percentile required for females would be ___
for males ___
Male vs. female:
females are initially disadvantaged due to weighing less
The percentile required for females would be 90th
for males 60th
Employees must be capable of performing their job in a ___ manner
manula handling accounts for __% of work related injuries
The recommended weight of lift takes into account with 3 factors of manual handling:
- perceived acceptible limit
= % max aerobic capacity
What is the the max weight suggested under optimal circumstances for the recommended weight of lift
But not always possible to alter the task - pack weight weight 30kg
- select individuals capable of performing the task safely
-increased risk of injury if jon tasks are at maximal capacity
- biomechanical factors cannot be influenced
-psychophysical measures are self selected
whats the manual handling solution?
max lifting capacity is correlated with psychophyical measures
max lifting tests can be used to predict a 'safe'standard
High body fat % and inexerpeience are the greatest risk factors for...
what is the effective ways of dealing with heat-related illness?
-sweating;faster onset, greater production
- lower resting core temp and lower rise during exercise
Hypothermia is a core body temp below ___
what is cold-induced vasodilation?
increased peripheral blood flow at the expense of core temp
avoids frostbite - a good protective mechanism
how is performance affected by the cold?
reflexes and movements slower and less precise
3% increase in VO2 per 1kg of additional clothing