Kines100 Exercise Health and Nutrition Last Lecture Outline Lecture 13 1 Primary Care Physicians and Research 2 Psychological benefits Exercise and depression anxiety cognition pain and self esteem 3 Mechanisms Current Lecture 1 Mechanisms 2 Semantics 3 Exercise and staleness Mechanisms Distraction Bahrke and Morgan examined changes in state anxiety following exercise medication and quite rest Results significant decrease in anxiety following all 3 conditions Raglin and Morgan examined changes in anxiety and blood pressure following exercise and quiet rest Results significant decrease in anxiety and blood pressure following both effects lasted much longer following exercise Monoamine Norepinephrine and serotonin examined dysregulation of monoamine system seen in depressed individuals Exercises found to impact brain levels of norepinephrine and serotonin in animals positive way Opiods endogenous opiod system can be activated by exercise research findings are mixed linked to exercise addiction Negative effects exercise addictions overtraining and staleness Semantics Committed motivated obligatory dependent addiction diagnosis treatment Exercise dependence Addition Tolerance withdrawal lack of control time reduction in other activities continuance for most people benefit of exercise far exceed the potential for exercise abuse Exercise addiction 3 of general population meet criteria can occur in men and women Associated often with endurance exercise but also with resistance training 40 50 of exercise addiction can follow criteria for eating disorder Cycle of events Recreational exercise At risk exercise when dependency starts Problem exercise Exercise addiction Warning signs job family self injury if any of these categories are effected Animals research mice morphine addiction deprivation withdrawal Exercise addiction deprivation withdrawal Exercise and staleness Overtraining systematically planned Significant increase in training volume With proper taper results increase performance Staleness drop in performance that is not improved with rest and reductions in training most research focuses on endurance sports run swim row In elite distance runners that show staleness Women 60 Men 64 Behavior in Staleness Performance plateaus or decrements elevated sense of effort Insomnia decreased appetite Physiological Many variables studied inconsistent results Consistent muscle soreness creatine kinase and weight loss Psychological Increased tension depression anger fatigue confusion Decreased vigor increased state and trait anxiety Can staleness be prevented Monitor variables muscle soreness creatine kinase mood disturbance muscle glycogen Complete rest is the only known cure
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