Exercise,stress and anxiety Flashcards
Definition of stress
Stress is a state of physical/psychological challenge/imbalance (eustress/distress)
Definition of a stressor
Stressor is an external or internal stimulus causing challenge (acute,chronic, distant)
Definition of stress response
Stress response is a psycho-physiological reaction that helps body/mind adapt and restore balance
Surgeons general report on stress and mental health for adults (2000) major life stresses for adults?
Break ups, deaths, moving, poverty, prejudice, poor health, injury
Ross et al (1999) major life stresses for students?
change in sleeping/eating habits, holiday work, new responsibilities, workload, finance, computers, poor grades
Fight or flight defined by Cannon (1915)
- Adaptive evolutionary response
- raised heart rate, blood pressure, muscle tension, sweating, flushing, dry mouth, pupil dilation
- hyper vigilance, narrowing focus, impulsivity
- hyperactivity, habitual activity, aggression, sleep-loss, withdrawal
General adaptation syndrome is
- stress occurs
- alarm phase (worse state)
- resistance (improvement)
- exhaustion (regression)
Stress related illness physical symptoms?
- Immunodefiency
- Diabetes/heart disease
- Cancer
- Infertility
- Osteoporosis
Stress related illness psycho-behavioral symptoms?
- Depression and anxiety
- Eating disorder
- alcohol/drug dependency
- suicide
Aldana et al (1996) reported
Active adults (>3kcal/kg-1day-1) report less high (62%) and moderate (78%) stress
Roth and Holmes (1985) reported
aerobic fitness mitigated the effects of stress upon stress related illness in college freshmen
Crews and Landers (1987) meta-analysis on active vs sedentary responses to stress
- 34 studies
- aerobically fit/active individual had reduced stress response (especially in recovery)
Spalding et al. (2004) training and stress response 6 week intervention found that…
- 45 sedentary females (18-30)
- 70-85% VO2,20-30 mins., 3-5 weeks, 7 lifts 3x8-12, 3/5 times per week
- pre-post stress test
- trained participants exhibited improved fitness and reduced stress (BP, HR) during stress test and recovery
Selye (1950) does training buffer stress?
cross-stressor adaptation hypothesis
- training, induces physical adaptations that generalise domains
- augmented response to novel stressors results in quicker adaptation
- minimisation of the stress response during common or chronic stress; preserves NE and Cortisol
Gal & Lazarus (1975) Psychological factors
Greater autonomy and mastery (hardiness: control, challenge, commitment)
-improved self-perception
social support
-distraction