The effects of exercise on oxidative stress (TBARS) and BDNF in severely depressed inpatients.
Exercise can be an effective treatment for depression. Although the efficacy of exercise is well established, little is known concerning the biological changes associated with the antidepressant effects of exercise. A randomized, controlled trial was conducted to evaluate the effects of adding exercise to the usual treatment on the thiobarbituric acid-reactive substances (TBARS) and brain-derived neurotrophic factor (BDNF) serum levels of severely depressed inpatients. Twenty-six participants were randomized to an exercise group (n=15, exercise+treatment as usual) or a control group (n=11, treatment as usual). The participants in the exercise group completed a targeted dose of 16.5 kcal/kg/week of aerobic exercise, three times per week, throughout their hospitalizations. The control group did not exercise during their hospitalizations. The mean hospitalization length was of 21.63 (4.5)×23.82 (5.7) days for exercise and control groups, respectively. The exercise group performed a median of nine sessions. After adjusting for previous tobacco use, a significant group×time interaction was found for TBARS serum levels (p=0.02). A post hoc Bonferroni test revealed differences between the exercise and control groups at discharge. A significant time effect (p<0.001) but no group×time interaction was found (p=0.13) for BDNF serum levels. Adding exercise to the usual treatment of severely depressed inpatients decreases the TBARS serum levels of severely depressed inpatients after 3 weeks. Adding exercise had no additional effects on BDNF serum levels.
Programa de Pós-Graduação em Ciências Médicas: Psiquiatria, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil, felipe.schuch@ufrgs.br.
Felipe Barreto
FB
Schuch
Mirela Paiva
MP
Vasconcelos-Moreno
Carolina
C
Borowsky
Ana Beatriz
AB
Zimmermann
Bianca
B
Wollenhaupt-Aguiar
Pamela
P
Ferrari
Marcelo Pio
MP
de Almeida Fleck
D000328:Adult; D000704:Analysis of Variance; D000928:Antidepressive Agents / Q000627:therapeutic use; D019208:Brain-Derived Neurotrophic Factor / Q000097:blood*; D003863:Depression / Q000188:drug therapy / Q000378:metabolism / Q000503:physiopathology / Q000534:rehabilitation*; D004797:Enzyme-Linked Immunosorbent Assay; D015444:Exercise / Q000502:physiology*; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress / Q000502:physiology*; D010101:Oxygen Consumption; D011569:Psychiatric Status Rating Scales; D012189:Retrospective Studies; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
D000928:Antidepressive Agents; D019208:Brain-Derived Neurotrophic Factor; D017392:Thiobarbituric Acid Reactive Substances