|
Conceptual
Framework of Adrenal Stress Index
_________________________________________________________
Short
Literature Survey
Modern Life, The Spectrum of Stress Exposure
| Office
task using a computer screen for 30 minutes |
Stressor
Applied:
Office task using a computer screen for 30 minutes. |
|
Responses
Measured:
Salivary Cortisol
Heart Rate |
| Schreinicke,
G. et al. Stress-Related Changes of Saliva Cortisol in Video Display
Unit Operator. Int'l Arch. Occup. Environ Health. (1990) 62:319. |
Findings
& Observations:
Significant Increase in Saliva Cortisol
Salivary Cortisol is a useful strain indicator
of short-term stressors. |
Short
Literature Survey
(continued)
| Preparation
of a 15 minute talk at work |
Stressor
Applied:
Preparation of a 15 minute talk at work. |
|
Response
Measured:
Urinary Catecholamines (UC) and Cortisol
Salivary Cortisol
Heart Rate
Blood Pressure
All in Serial Measurements |
| Bassett,
J.R., Marshall, PM, Spillane R. Physiological Measurement of Acute
Stress in Bank Employees. Int. J. psychopysiol. (1987) 5:265. |
Findings
& Observations:
Urinary Adrenaline and UC were significantly elevated immediately
following but not before the talk
Salivary Cortisol levels were significantly increased before and after
the delivery of the talk.
The other parameters showed no significant changes.
Authors indicated that salivary cortisol more closely reflect plasma
changes without the lag-time involved in urinary hormone measurements.
Salivary Cortisol would appear to be the measurement
of choice in human stress studies. |
Short
Literature Survey (continued)
| Flight
tasks in pilots and co-pilots during scheduled assignments |
Stressors
Applied:
Flight tasks in pilots and co-pilots during scheduled assignments. |
|
Responses
Measured:
Salivary Cortisol (SC)
Heart Rate (HR) |
| Kakimoto,
Y. et al. Crew work load in JASDF C-1 transport flights: change in
heart rate and salivary cortisol. Aviat. Space Environ. Med. (1988)
59:511. |
Findings
& Observations:
Bothe SC and HR showed elevations during flights in both pilots and
co-pilots. The elevations were inversely related to flying experience.
Co-pilots showed higher activation and variability
in
HR and SC between periods of controlling and non- controlling of the
aircraft. |
Short
Literature Survey (continued)
| Controllable
and uncontrollable success and failure conditions using a test outcome |
Stressors
Applied:
Controllable and uncontrollable success and failure using a challenge
test. Both control and depressed individual were tested before and
after the challenge. |
|
Response
Measured:
Salivary Cortisol |
| Croes,
S., Merz P., Netter, P. Cortisol reaction in success and failure condition
in endogenous depressed patient and controls. Psychoeuroendocrinology.
(1993) 18:23. |
Findings
& Observations:
Salivary Cortisol showed no difference between groups in baseline
values (before test). However, in controls the cortisol increased
after uncontrollable stress and decreased off the baseline with controllable
stress.
In contrast, cortisol decreased after both conditions
in the depressed group although they were as emotionally upset after
failure as the control. |
Short
Literature Survey (continued)
| Naps,
40 min. car rides, and 30 min. of maternal separation conducted in
healthy 9 month old infants. |
Stressors
Applied:
Naps
40 min. car rides
30 min. of maternal separation conducted in healthy
toddlers |
|
Responses
Measured:
Salivary Cortisol |
| Larson,
M.C., Gunnar, M., Herstgaard, L. Rhe effects of morning naps, car
trips, and maternal seperation on adrenocortical activity in infants.
Child Dev. (1991) 62:362. |
Findings
& Observations:
Morning post nap cortisol showed significant decrease compared to
base line. Salivary cortisol showed significant drops after a 40 min.
car ride independent of falling asleep in the car.
Maternal separation resulted in significantly higher salivary cortisol.
In infants, distressed behavior was significantly associated with
salivary cortisol elevation under stress conditions. |
Short
Literature Survey (continued)
| Hypoglycemic
episodes induced by insulin in healthy adults. |
Stressors
Applied:
Hypoglycemic episodes induced by insulin in healthy adults |
|
Responses
Measured:
Serum Glucose and Cortisol
Salivary Cortisol |
| Akanji,
A.O., et al. Plasma salivary concentrations of glucose and cortisol
during insulin induced hypoglycemia stress in healthy nigereans. Afr.
J. Med Sci. (1990) 19:265. |
Findings
& Observations:
Serum glucose showed significant decrease following the insulin injection.
Cortisol levels in plasma and saliva increased by 50% and 120% at
60 and 90 min. post insulin.
The authors conclude that increases in plasma cortisol are reflected
in saliva and salivary is an alternative to free plasma cortisol in
the dynamic assessment of adreno- corticol function.
Serum cortisol fluctuations in response to blood sugar drops (hypoglycemia)
are well reflected in salivary cortisol concentrations. |
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