***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 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Objective : To compare the effects of 2 forms of exercise , i.e. , a 6-week trial of treadmill training with virtual reality ( TT + VR ) that targets motor and cognitive aspects of safe ambulation and a 6-week trial of treadmill training alone ( TT ) , on brain activation in patients with Parkinson disease ( PD ) . Methods : As part of a r and omized controlled trial , patients were r and omly assigned to 6 weeks of TT ( n = 17 , mean age 71.5 ± 1.5 years , disease duration 11.6 ± 1.6 years ; 70 % men ) or TT + VR ( n = 17 , mean age 71.2 ± 1.7 years , disease duration 7.9 ± 1.4 years ; 65 % men ) . A previously vali date d fMRI imagery paradigm assessed changes in neural activation pretraining and post-training . Participants imagined themselves walking in 2 virtual scenes projected in the fMRI : ( 1 ) a clear path and ( 2 ) a path with virtual obstacles . Whole brain and region of interest analyses were performed . Results : Brain activation patterns were similar between training arms before the interventions . After training , participants in the TT + VR arm had lower activation than the TT arm in Brodmann area 10 and the inferior frontal gyrus ( cluster level familywise error – corrected [ FWEcorr ] p < 0.012 ) , while the TT arm had lower activation than TT + VR in the cerebellum and middle temporal gyrus ( cluster level FWEcorr p < 0.001 ) . Changes in fall frequency and brain activation were correlated in the TT + VR arm . Conclusions : Exercise modifies brain activation patterns in patients with PD in a mode-specific manner . Motor-cognitive training decreased the reliance on frontal regions , which apparently result ed in improved function , perhaps reflecting increased brain efficiency Introduction Physical rehabilitation is commonly used in patients with Parkinson ’s disease ( PD ) to improve their health and alleviate the symptoms . Objective We compared the effects of three programs , strength training ( ST ) , aerobic training ( AT ) , and physiotherapy , on motor symptoms , functional capacity , and electroencephalographic ( EEG ) activity in PD patients . Methods Twenty-two patients were recruited and r and omized into three groups : AT ( 70 % of maximum heart rate ) , ST ( 80 % of one repetition maximum ) , and physiotherapy ( in groups ) . Subjects participated in their respective interventions twice a week for 12 weeks . The assessment s included measures of disease symptoms ( Unified Parkinson ’s Disease Rating Scale [ UPDRS ] ) , functional capacity ( Senior Fitness Test ) , and EEG before and after 12 weeks of intervention . Results The PD motor symptoms ( UPDRS-III ) in the group of patients who performed ST and AT improved by 27.5 % ( effect size [ES]=1.25 , confidence interval [CI]=−0.11 , 2.25 ) and 35 % ( ES=1.34 , CI=−0.16 , 2.58 ) , respectively , in contrast to the physiotherapy group , which showed a 2.9 % improvement ( ES=0.07 , CI=−0.85 , 0.99 ) . Furthermore , the functional capacity of all three groups improved after the intervention . The mean frequency of the EEG analysis mainly showed the effect of the interventions on the groups ( F=11.50 , P=0.0001 ) . Conclusion ST and AT in patients with PD are associated with improved outcomes in disease symptoms and functional capacity Background Synthesis of multiple r and omized controlled trials ( RCTs ) in a systematic review can summarize the effects of individual outcomes and provide numerical answers about the effectiveness of interventions . Filtering of search es is time consuming , and no single method fulfills the principal requirements of speed with accuracy . Automation of systematic review s is driven by a necessity to expedite the availability of current best evidence for policy and clinical decision-making . We developed Rayyan ( http://rayyan.qcri.org ) , a free web and mobile app , that helps expedite the initial screening of abstract s and titles using a process of semi-automation while incorporating a high level of usability . For the beta testing phase , we used two published Cochrane review s in which included studies had been selected manually . Their search es , with 1030 records and 273 records , were uploaded to Rayyan . Different features of Rayyan were tested using these two review s. We also conducted a survey of Rayyan ’s users and collected feedback through a built-in feature . Results Pilot testing of Rayyan focused on usability , accuracy against manual methods , and the added value of the prediction feature . The “ taster ” review ( 273 records ) allowed a quick overview of Rayyan for early comments on usability . The second review ( 1030 records ) required several iterations to identify the previously identified 11 trials . The “ suggestions ” and “ hints , ” based on the “ prediction model , ” appeared as testing progressed beyond five included studies . Post rollout user experiences and a reflexive response by the developers enabled real-time modifications and improvements . The survey respondents reported 40 % average time savings when using Rayyan compared to others tools , with 34 % of the respondents reporting more than 50 % time savings . In addition , around 75 % of the respondents mentioned that screening and labeling studies as well as collaborating on review s to be the two most important features of Rayyan . As of November 2016 , Rayyan users exceed 2000 from over 60 countries conducting hundreds of review s totaling more than 1.6 M citations . Feedback from users , obtained mostly through the app web site and a recent survey , has highlighted the ease in exploration of search es , the time saved , and simplicity in sharing and comparing include-exclude decisions . The strongest features of the app , identified and reported in user feedback , were its ability to help in screening and collaboration as well as the time savings it affords to users . Conclusions Rayyan is responsive and intuitive in use with significant potential to lighten the load of review ers The Consoli date d St and ards of Reporting Trials ( CONSORT ) statement is a guideline design ed to improve the transparency and quality of the reporting of r and omised controlled trials ( RCTs ) . In this article we present an extension to that statement for r and omised pilot and feasibility trials conducted in advance of a future definitive RCT . The checklist applies to any r and omised study in which a future definitive RCT , or part of it , is conducted on a smaller scale , regardless of its design ( eg , cluster , factorial , crossover ) or the terms used by authors to describe the study ( eg , pilot , feasibility , trial , study ) . The extension does not directly apply to internal pilot studies built into the design of a main trial , non-r and omised pilot and feasibility studies , or phase II studies , but these studies all have some similarities to r and omised pilot and feasibility studies and so many of the principles might also apply . The development of the extension was motivated by the growing number of studies described as feasibility or pilot studies and by research that has identified weaknesses in their reporting and conduct . We followed recommended good practice to develop the extension , including carrying out a Delphi survey , holding a consensus meeting and research team meetings , and piloting the checklist . The aims and objectives of pilot and feasibility r and omised studies differ from those of other r and omised trials . Consequently , although much of the information to be reported in these trials is similar to those in r and omised controlled trials ( RCTs ) assessing effectiveness and efficacy , there are some key differences in the type of information and in the appropriate interpretation of st and ard CONSORT reporting items . We have retained some of the original CONSORT statement items , but most have been adapted , some removed , and new items added . The new items cover how participants were identified and consent obtained ; if applicable , the prespecified criteria used to judge whether or how to proceed with a future definitive RCT ; if relevant , other important unintended consequences ; implication s for progression from pilot to future definitive RCT , including any proposed amendments ; and ethical approval or approval by a research review committee confirmed with a reference number . This article includes the 26 item checklist , a separate checklist for the abstract , a template for a CONSORT flowchart for these studies , and an explanation of the changes made and supporting examples . We believe that routine use of this proposed extension to the CONSORT statement will result in improvements in the reporting of pilot trials . Editor ’s note : In order to encourage its wide dissemination this article is freely accessible on the BMJ and Pilot and Feasibility Studies journal websites Forced-rate lower-extremity exercise has recently emerged as a potential safe and low-cost therapy for Parkinson 's disease ( PD ) . The efficacy is believed to be dependent on pedaling rate , with rates above the subjects ' voluntary exercise rates being most beneficial . In this study , we use functional connectivity magnetic resonance imaging ( MRI ) to further eluci date the mechanism underlying this effect . Twenty-seven PD patients were r and omized to complete 8 weeks of forced-rate exercise ( FE ) or voluntary-rate exercise ( VE ) . Exercise was delivered using a specialized stationary bicycle , which can augment patients ' voluntary exercise rates . The FE group received assistance from the cycle . Imaging was conducted at baseline , end of therapy , and after 4 weeks of follow-up . Functional connectivity ( FC ) was determined via seed-based correlation analysis , using activation-based seeds in the primary motor cortex ( M1 ) . The change in FC after exercise was compared using linear correlation with pedaling rate . Results of the correlation analysis showed a strong positive correlation between pedaling rate and change in FC from the most affected M1 to the ipsilateral thalamus . This effect persisted after 4 weeks of follow-up . These results indicate that a plausible mechanism for the therapeutic efficacy of high-rate exercise in PD is that it improves thalamo-cortical connectivity The Consoli date d St and ards of Reporting Trials ( CONSORT ) statement is a guideline design ed to improve the transparency and quality of the reporting of r and omised controlled trials ( RCTs ) . In this article we present an extension to that statement for r and omised pilot and feasibility trials conducted in advance of a future definitive RCT . The checklist applies to any r and omised study in which a future definitive RCT , or part of it , is conducted on a smaller scale , regardless of its design ( eg , cluster , factorial , crossover ) or the terms used by authors to describe the study ( eg , pilot , feasibility , trial , study ) . The extension does not directly apply to internal pilot studies built into the design of a main trial , non-r and omised pilot and feasibility studies , or phase II studies , but these studies all have some similarities to r and omised pilot and feasibility studies and so many of the principles might also apply . The development of the extension was motivated by the growing number of studies described as feasibility or pilot studies and by research that has identified weaknesses in their reporting and conduct . We followed recommended good practice to develop the extension , including carrying out a Delphi survey , holding a consensus meeting and research team meetings , and piloting the checklist . The aims and objectives of pilot and feasibility r and omised studies differ from those of other r and omised trials . Consequently , although much of the information to be reported in these trials is similar to those in r and omised controlled trials ( RCTs ) assessing effectiveness and efficacy , there are some key differences in the type of information and in the appropriate interpretation of st and ard CONSORT reporting items . We have retained some of the original CONSORT statement items , but most have been adapted , some removed , and new items added . The new items cover how participants were identified and consent obtained ; if applicable , the prespecified criteria used to judge whether or how to proceed with a future definitive RCT ; if relevant , other important unintended consequences ; implication s for progression from pilot to future definitive RCT , including any proposed amendments ; and ethical approval or approval by a research review committee confirmed with a reference number . This article includes the 26 item checklist , a separate checklist for the abstract , a template for a CONSORT flowchart for these studies , and an explanation of the changes made and supporting examples . We believe that routine use of this proposed extension to the CONSORT statement will result in improvements in the reporting of pilot trials . Editor ’s note : In order to encourage its wide dissemination this article is freely accessible on the BMJ and Pilot and Feasibility Studies journal websites OBJECTIVE : To test the feasibility of creating a valid and reliable checklist with the following features : appropriate for assessing both r and omised and non-r and omised studies ; provision of both an overall score for study quality and a profile of scores not only for the quality of reporting , internal validity ( bias and confounding ) and power , but also for external validity . DESIGN : A pilot version was first developed , based on epidemiological principles , review s , and existing checklists for r and omised studies . Face and content validity were assessed by three experienced review ers and reliability was determined using two raters assessing 10 r and omised and 10 non-r and omised studies . Using different raters , the checklist was revised and tested for internal consistency ( Kuder-Richardson 20 ) , test-retest and inter-rater reliability ( Spearman correlation coefficient and sign rank test ; kappa statistics ) , criterion validity , and respondent burden . MAIN RESULTS : The performance of the checklist improved considerably after revision of a pilot version . The Quality Index had high internal consistency ( KR-20 : 0.89 ) as did the subscales apart from external validity ( KR-20 : 0.54 ) . Test-retest ( r 0.88 ) and inter-rater ( r 0.75 ) reliability of the Quality Index were good . Reliability of the subscales varied from good ( bias ) to poor ( external validity ) . The Quality Index correlated highly with an existing , established instrument for assessing r and omised studies ( r 0.90 ) . There was little difference between its performance with non-r and omised and with r and omised studies . Raters took about 20 minutes to assess each paper ( range 10 to 45 minutes ) . CONCLUSIONS : This study has shown that it is feasible to develop a checklist that can be used to assess the method ological quality not only of r and omised controlled trials but also 
    Output:
    
Our results indicate that various forms of physical exercise may lead to changes in various markers of neuroplasticity .