***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
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    Input: BACKGROUND Although exercise has been shown to relieve depression , little is known about its mechanism or dose-response characteristics . We hypothesized that high intensity progressive resistance training ( PRT ) would be more effective than either low intensity PRT or st and ard care by a general practitioner ( GP ) in depressed elderly persons , and that high intensity PRT would provide superior benefits in quality of life , sleep quality , and self-efficacy . METHODS Sixty community-dwelling adults > 60 years with major or minor depression were r and omized to supervised high intensity PRT ( 80 % maximum load ) or low intensity PRT ( 20 % maximum load ) 3 days per week for 8 weeks , or GP care . RESULTS A 50 % reduction in the Hamilton Rating Scale of Depression score was achieved in 61 % of the high intensity , 29 % of the low intensity , and 21 % of the GP care group ( p = .03 ) . Strength gain was directly associated with reduction in depressive symptoms ( r = 0.40 , p = .004 ) , as was baseline social support network type ( F = 3.52 , p = .015 ) , whereas personality type , self-efficacy , and locus of control were unrelated to the antidepressant effect . Vitality quality -of-life scale improved more in the high intensity group than in the others ( p = .04 ) . Sleep quality improved significantly in all participants ( p < .0001 ) , with the greatest relative change in high intensity PRT ( p = .05 ) . CONCLUSIONS High intensity PRT is more effective than is low intensity PRT or GP care for the treatment of older depressed patients Objective : To assess whether patients receiving aerobic exercise training  performed either at home or in a supervised group setting achieve reductions in depression comparable to st and ard antidepressant medication ( sertraline ) and greater reductions in depression compared to placebo controls . Methods : Between October 2000 and November 2005 , we performed a prospect i ve , r and omized controlled trial ( SMILE study ) with allocation concealment and blinded outcome assessment in a tertiary care teaching hospital . A total of 202 adults ( 153 women ; 49 men ) diagnosed with major depression were assigned r and omly to one of four conditions : supervised exercise in a group setting ; home-based exercise ; antidepressant medication ( sertraline , 50–200 mg daily ) ; or placebo pill for 16 weeks . Patients underwent the structured clinical interview for depression and completed the Hamilton Depression Rating Scale ( HAM-D ) . Results : After 4 months of treatment , 41 % of the participants achieved remission , defined as no longer meeting the criteria for major depressive disorder ( MDD ) and a HAM-D score of < 8 . Patients receiving active treatments tended to have higher remission rates than the placebo controls : supervised exercise = 45 % ; home-based exercise = 40 % ; medication = 47 % ; placebo = 31 % ( p = .057 ) . All treatment groups had lower HAM-D scores after treatment ; scores for the active treatment groups were not significantly different from the placebo group ( p = .23 ) . Conclusions : The efficacy of exercise in patients seems generally comparable with patients receiving antidepressant medication and both tend to be better than the placebo in patients with MDD . Placebo response rates were high , suggesting that a considerable portion of the therapeutic response is determined by patient expectations , ongoing symptom monitoring , attention , and other nonspecific factors . BDI = Beck Depression Inventory ; CI = confidence interval ; HAM-D = Hamilton Depression Rating Scale ; ITT = intention-to-treat ; MDD = major depressive disorder ; SD = st and ard deviation ; SSRIs = selective serotonin reuptake inhibitors ; TSH = thyroid stimulating hormone Objective : This is a retrospective study to add to the existing body of clinical information regarding male sexual side effects associated with antidepressants . From the chart review , thirty-four out of eighty male patients were identified to have reported loss of libido , erectile difficulty , anorgasmia , and delayed ejaculation while receiving pharmacotherapy of selective serotonin reuptake blockers ( fluoxetine , paroxetine , and sertraline ) ; tricyclic antidepressants ( nortriptyline , imipramine , amitriptyline , desipramine , and clomipramine ) ; and a monoamine oxidase inhibitor ( phenelzine ) . Method : The authors also discussed the management of these sexual side effects by waiting for spontaneous remission , reducing the dosage level , and substituting the offending drug with other antidepressants . Results : This article underscores the underreported nature of antidepressant-associated sexual dysfunction , the high incidence of SSRI-associated sexual side effects , equal potentials in causing sexual side effects among the three SSRI 's , the low incidence rate of sexual adverse effects from bupropion , and the minimal need to add an antidote if the side effects are to be managed systematic ally . Conclusions : Finally , male sexual side effects can occur r and omly and involve any sexual phase r and omly , and the treatment approaches are similar , regardless of the types of sexual dysfunction associated with antidepressants Les auteurs ont trouve une efficacite semblable pour la therapie cognitivo-comportementale et pour la relaxation , dans le traitement de la depression chez Outcomes of seven treatment trials comparing cognitive behavioral therapy to treatment with tricyclic antidepressant medication in major depressive disorder have been quite similar to one another . This led us to question whether treatment outcome in time-limited studies reflected a unique effect of cognitive behavioral therapy . To test the uniqueness hypothesis , relaxation training , a nonpharmacologic , noncognitive treatment , was chosen as a comparison for cognitive behavioral therapy as well as drug therapy . Treatment duration was 16 weeks . The sample of 37 patients treated for major depressive disorder was less depressed than those previously studied . For both cognitive behavioral therapy and relaxation training , outcome of depression was superior to that of tricyclic antidepressant medication by endpoint analysis . The posttreatment scores on the Beck Depression Inventory of 82 % of the group receiving cognitive behavioral therapy improved to a Beck Depression Inventory score ≤9 which was not significantly greater than that for the group receiving relaxation training.(73 % ) , so a unique effect was not demonstrated for cognitive behavioral therapy . The outcome for tricyclic antidepressant medication  ( 29 % improved to criteria ) was significantly worse than that for cognitive behavioral therapy . The patient 's pretreatment initial expectancy was not predictive OBJECTIVES This report released findings of a r and omized controlled trial conducted in Hong Kong to further our underst and ing of the psychosocial effects of qigong on elderly persons with depression . DESIGN Eighty-two participants with a diagnosis of depression or obvious features of depression were recruited and r and omly assigned into the intervention and comparison group . The intervention group was given a 16-week period of Qigong practice while the comparison group participated in a newspaper reading group with same duration and frequency . RESULTS After eight weeks of qigong practice , the intervention group participants outstripped themselves in improvement in mood , self-efficacy and personal well being , and physical and social domains of self-concept when compared with comparison subjects . After 16 weeks of practice , the improvement generalized to the daily task domain of the self-concept . CONCLUSIONS This report shows that regular qigong practice could relieve depression , improve self-efficacy and personal well being among elderly persons with chronic physical illness and depression In this article , we examined the antidepressant influence of an 8-week-long aerobic exercise intervention in which two training parameters were manipulated : exercise frequency and group environment . Twenty-three individuals with elevated symptoms of depression were recruited in a sport and fitness facility and agreed to participate in this 8-week study . They were r and omly assigned to three groups : ( a ) low-frequency exercise ( control ) ( n = 7 ) , ( b ) high-frequency exercise ( n = 8) , and ( c ) high-frequency exercise + group-based intervention ( n = 8) . Participants completed the Beck Depression Inventory ( BDI-II ) at study entry , and at 4 and 8 weeks subsequently . The results showed that those in the high-frequency aerobic exercise experimental groups reported lower depression scores than those in the low-frequency ( control ) group at 4 weeks ( 13.2 + /- 7.3 and 11.7 + /- 3.1 vs. 22.4 + /- 7.5 ) and 8 weeks ( 10.9 + /- 8.1 and 9.6 + /- 2.5 vs. 20.7 + /- 6.3 ) . However , alleviation in depressive symptoms was not found to be greater in those participants who received a group-based intervention The effects of two non-drug treatments ( physical exercise and bright light ) on mood , body weight and oxygen consumption were compared in age-matched groups of female subjects with winter depression , non-seasonal depression or without depression . It was found that oxygen consumption in the pre-treatment condition was similar in non-depressed subjects ( n=18 ) and depressed non-seasonals ( n=18 ) , while comparatively lower values were obtained in winter depression ( n=27 ) . Neither mood nor metabolic parameters changed significantly in the group of nine untreated winter depressives . One week of physical exercise ( 1-h pedaling on a bicycle ergometer between 13.00 and 14.00 h ) increased oxygen consumption in the group of nine winter depressives and lowered oxygen consumption in nine-subject groups of depressed and non-depressed non-seasonals . One week of bright light treatment ( 2-h exposure to 2500 lux between 14.00 and 16.00 h ) increased oxygen consumption in nine winter depressives and nine non-depressed subjects , while no significant change in oxygen consumption was found in nine subjects with non-seasonal depression . Weight loss was observed in the groups treated with physical exercise and in the group of light-treated winter depressives . Winter depression responded equally well to exercising and light , while a significant therapeutic difference in favor of exercising was found in non-seasonal depression . Overall , the results of the study suggest that energy-regulating systems are implicated in the antidepressant action of the non-drug treatments Objective To investigate the effectiveness of facilitated physical activity as an adjunctive treatment for adults with depression presenting in primary care . Design Pragmatic , multicentre , two arm parallel r and omised controlled trial . Setting General practice s in Bristol and Exeter . Participants 361 adults aged 18 - 69 who had recently consulted their general practitioner with symptoms of depression . All those r and omised had a diagnosis of an episode of depression as assessed by the clinical interview schedule-revised and a Beck depression inventory score of 14 or more . Interventions In addition to usual care , intervention participants were offered up to three face to face sessions and 10 telephone calls with a trained physical activity facilitator over eight months . The intervention was based on theory and aim ed to provide individually tailored support and encouragement to engage in physical activity . Main outcome measures The primary outcome was self reported symptoms of depression , assessed with the Beck depression inventory at four months post-r and omisation . Secondary outcomes included use of antidepressants and physical activity at the four , eight , and 12 month follow-up points , and symptoms of depression at eight and 12 month follow-up . Results There was no evidence that participants offered the physical activity intervention reported improvement in mood by the four month follow-up point compared with those in the usual care group ; adjusted between group difference in mean Beck depression inventory score −0.54 ( 95 % confidence interval −3.06 to 1.99 ; P=0.68 ) . Similarly , there was no evidence that the intervention group reported a change in mood by the eight and 12 month follow-up points . Nor was there evidence that the intervention reduced antidepressant use compared with usual care ( adjusted odds ratio 0.63 , 95 % confidence interval 0.19 to 2.06 ; P=0.44 ) over the duration of the trial . However , participants allocated to the intervention group reported more physical activity during the follow-up period than those allocated to the usual care group ( adjusted odds ratio 2.27 , 95 % confidence interval 1.32 to 3.89 ; P=0.003 ) . Conclusions The addition of a facilitated physical activity intervention to usual care did not improve depression outcome or reduce use of antidepressants compared with usual care alone . Trial registration Current Controlled Trials IS RCT N16900744 BACKGROUND Depression in elderly people may be contributed to by the multiple losses of aging . Exercise has the potential to positively impact many of these losses simultaneously . We tested the hypothesis that progressive resistance training ( PRT ) would reduce depression while improving physiologic capacity , quality of life , morale , function and self-efficacy without adverse events in an older , significantly depressed population . METHODS We conducted a 10-week r and omized controlled trial of volunteers aged 60 and above with major or minor depression or dysthymia . Subjects were r and omized for 10 weeks to either a supervised PRT program three times a week or an attention-control group . RESULTS A total of 32 subjects aged 60 - 84 , mean age 71.3 + /- 1.2 yr , were r and omized and completed the study . No significant adverse events occurred . Median compliance was 95 % . PRT significantly reduced all depression measures ( Beck Depression Inventory in exercisers 21.3 + /- 1.8 to 9.8 + /- 2.4 versus controls 18.4 + /- 1.7 to 13.8 + /- 2 , p = .002 ; Hamilton Rating Scale of Depression in exercisers 12 
    Output:
    
Exercise may be recommended for people with mild and moderate depression who are willing , motivated , and physically healthy enough to engage in such a program