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Human Brain Mapping 2000Neuroimaging studies have identified a number of cortical areas involved in the executive control of conscious actions. The areas most frequently implicated are... (Review)
Review
Neuroimaging studies have identified a number of cortical areas involved in the executive control of conscious actions. The areas most frequently implicated are prefrontal and cingulate cortices. Evidence suggests that both of these areas may be essential for executive control of willed action. Prefrontal cortex, however, may be responsible for the initial processing. Executive control is usually discussed with reference to willed actions and is assumed to regulate complex cognitive responses. Although many implicit processes involve complex responses, it is not known whether these actions are also controlled by executive processes. Significantly, some implicit tasks like those involving motor sequence learning and cross-modality priming activate the same areas of prefrontal cortex that are implicated in the executive control of willed actions. It is, however, not clear whether a single executive process controls both implicit and explicit processes, or the implicit processes are regulated by a separate set of executive control having distinct neuroanatomical location and processing properties.
Topics: Animals; Cerebral Cortex; Humans; Motor Activity; Unconscious, Psychology; Volition
PubMed: 10643728
DOI: 10.1002/(sici)1097-0193(2000)9:1<38::aid-hbm4>3.0.co;2-t -
Comprehensive Physiology Jan 2013Scientific evidence based on neuroimaging approaches over the last decade has demonstrated the efficacy of physical activity improving cognitive health across the human... (Review)
Review
Scientific evidence based on neuroimaging approaches over the last decade has demonstrated the efficacy of physical activity improving cognitive health across the human lifespan. Aerobic fitness spares age-related loss of brain tissue during aging, and enhances functional aspects of higher order regions involved in the control of cognition. More active or higher fit individuals are capable of allocating greater attentional resources toward the environment and are able to process information more quickly. These data are suggestive that aerobic fitness enhances cognitive strategies enabling to respond effectively to an imposed challenge with a better yield in task performance. In turn, animal studies have shown that exercise has a benevolent action on health and plasticity of the nervous system. New evidence indicates that exercise exerts its effects on cognition by affecting molecular events related to the management of energy metabolism and synaptic plasticity. An important instigator in the molecular machinery stimulated by exercise is brain-derived neurotrophic factor, which acts at the interface of metabolism and plasticity. Recent studies show that exercise collaborates with other aspects of lifestyle to influence the molecular substrates of cognition. In particular, select dietary factors share similar mechanisms with exercise, and in some cases they can complement the action of exercise. Therefore, exercise and dietary management appear as a noninvasive and effective strategy to counteract neurological and cognitive disorders.
Topics: Animals; Brain; Cognition; Cognition Disorders; Humans; Motor Activity
PubMed: 23720292
DOI: 10.1002/cphy.c110063 -
Scientific Reports Dec 2022Little is known about the impact of control group therapy on clinical benefit scales such as American Society of Clinical Oncology Value Framework (ASCO-VF), European...
Little is known about the impact of control group therapy on clinical benefit scales such as American Society of Clinical Oncology Value Framework (ASCO-VF), European Society for Medical Oncology Magnitude Clinical Benefit Scale (ESMO-MCBS), National Comprehensive Cancer Network (NCCN) Evidence Blocks and ASCO Cancer Research Committee (ASCO-CRC). We searched Drugs@FDA to identify cancer drugs approved between January 2012 and December 2021 based on randomized trials (RCTs). Definition of substantial clinical benefit was based on recommendations for each scale. Associations between characteristics of control group therapy and clinical benefit were explored using logistic regression. RCTs with a control group of active treatment plus placebo were associated with significantly lower odds of substantial benefit with ESMO-MCBS (OR 0.27, P = 0.003) and ASCO-VF (OR 0.30, P = 0.008) but not with NCCN Evidence Blocks or ASCO-CRC. This effect was attenuated and lost statistical significance without adjustment for quality of life (QoL) and/or toxicity (ESMO-MCBS OR 0.50, P = 0.17; ASCO-VF OR 0.49, P = 0.11). Clinical benefit scales can be sensitive to control group therapy. RCTs with substantial overlap between experimental and control therapy showed lower magnitude of clinical benefit using ESMO-MCBS and ASCO-VF scales; possibly due to differences in the weighting of QoL and toxicity between different frameworks.
Topics: Humans; Neoplasms; Control Groups; Antineoplastic Agents; Medical Oncology; Quality of Life
PubMed: 36494465
DOI: 10.1038/s41598-022-25983-9 -
New South Wales Public Health Bulletin 2009Reducing the burning of fossil fuels for transport will help reduce the rate of climate change and the severity of the impact of climate change. The alternatives to... (Review)
Review
Reducing the burning of fossil fuels for transport will help reduce the rate of climate change and the severity of the impact of climate change. The alternatives to private motor vehicles include active travel modes such as walking, cycling and use of public transport. While simultaneously reducing carbon dioxide emissions and traffic congestion, active transport leads to increased levels of physical activity and social interaction. This article summarises a number of NSW active travel initiatives. Despite some positive steps in NSW, other Australian states have invested far more and can demonstrate greater changes in travel behaviour.
Topics: Air Pollution; Atmosphere; Australia; Bicycling; Carbon Dioxide; Greenhouse Effect; Health Promotion; Humans; Interpersonal Relations; Motor Activity; New South Wales; Public Sector; Transportation; Walking
PubMed: 19261210
DOI: 10.1071/nb08043 -
Experimental Physiology Feb 2020What is the central question of this study? Does the parafacial respiratory group (pFRG), which mediates active expiration, recruit nasofacial and oral motoneurons to...
NEW FINDINGS
What is the central question of this study? Does the parafacial respiratory group (pFRG), which mediates active expiration, recruit nasofacial and oral motoneurons to coordinate motor activities that engage muscles controlling airways in rats during active expiration. What is the main finding and its importance? Hypercapnia/acidosis or pFRG activation evoked active expiration and stimulated the motoneurons and nerves responsible for the control of nasofacial and oral airways patency simultaneously. Bilateral pFRG inhibition abolished active expiration and the simultaneous nasofacial and oral motor activities induced by hypercapnia/acidosis. The pFRG is more than a rhythmic oscillator for expiratory pump muscles: it also coordinates nasofacial and oral motor commands that engage muscles controlling airways.
ABSTRACT
Active expiration is mediated by an expiratory oscillator located in the parafacial respiratory group (pFRG). Active expiration requires more than contracting expiratory muscles as multiple cranial nerves are recruited to stabilize the naso- and oropharyngeal airways. We tested the hypothesis that activation of the pFRG recruits facial and trigeminal motoneurons to coordinate nasofacial and oral motor activities that engage muscles controlling airways in rats during active expiration. Using a combination of electrophysiological and pharmacological approaches, we identified brainstem circuits that phase-lock active expiration, nasofacial and oral motor outputs in an in situ preparation of rat. We found that either high chemical drive (hypercapnia/acidosis) or unilateral excitation (glutamate microinjection) of the pFRG evoked active expiration and stimulated motoneurons (facial and trigeminal) and motor nerves responsible for the control of nasofacial (buccal and zygomatic branches of the facial nerve) and oral (mylohyoid nerve) motor outputs simultaneously. Bilateral pharmacological inhibition (GABAergic and glycinergic receptor activation) of the pFRG abolished active expiration and the simultaneous nasofacial and oral motor activities induced by hypercapnia/acidosis. We conclude that the pFRG provides the excitatory drive to phase-lock rhythmic nasofacial and oral motor circuits during active expiration in rats. Therefore, the pFRG is more than a rhythmic oscillator for expiratory pump muscles: it also coordinates nasofacial and oral motor commands that engage muscles controlling airways in rats during active expiration.
Topics: Animals; Exhalation; Facial Muscles; Male; Motor Activity; Motor Neurons; Mouth; Nasal Cavity; Rats; Rats, Wistar; Respiratory Center
PubMed: 31820827
DOI: 10.1113/EP088046 -
Journal of Assisted Reproduction and... May 2023The objective of this study was to investigate the key glycolysis-related genes linked to immune cell infiltration in endometriosis and to develop a new endometriosis...
PURPOSE
The objective of this study was to investigate the key glycolysis-related genes linked to immune cell infiltration in endometriosis and to develop a new endometriosis (EMS) predictive model.
METHODS
A training set and a test set were created from the Gene Expression Omnibus (GEO) public database. We identified five glycolysis-related genes using least absolute shrinkage and selection operator (LASSO) regression and the random forest method. Then, we developed and tested a prediction model for EMS diagnosis. The CIBERSORT method was used to compare the infiltration of 22 different immune cells. We examined the relationship between key glycolysis-related genes and immune factors in the eutopic endometrium of women with endometriosis. In addition, Gene Ontology (GO)-based semantic similarity and logistic regression model analyses were used to investigate core genes. Reverse real-time quantitative PCR (RT-qPCR) of 5 target genes was analysed.
RESULTS
The five glycolysis-related hub genes (CHPF, CITED2, GPC3, PDK3, ADH6) were used to establish a predictive model for EMS. In the training and test sets, the area under the curve (AUC) of the receiver operating characteristic curve (ROC) prediction model was 0.777, 0.824, and 0.774. Additionally, there was a remarkable difference in the immune environment between the EMS and control groups. Eventually, the five target genes were verified by RT-qPCR.
CONCLUSION
The glycolysis-immune-based predictive model was established to forecast EMS patients' diagnosis, and a detailed comprehension of the interactions between endometriosis, glycolysis, and the immune system may be vital for the recognition of potential novel therapeutic approaches and targets for EMS patients.
Topics: Humans; Female; Endometriosis; Machine Learning; Area Under Curve; Control Groups; Glycolysis; Glypicans; Repressor Proteins; Trans-Activators
PubMed: 36930359
DOI: 10.1007/s10815-023-02769-0 -
In Vivo (Athens, Greece) 2023Bone response to exercise depends on the type and size of the mechanical stimulus. In rowing, athletes are exposed to low mechanical but large compression loads mainly...
BACKGROUND/AIM
Bone response to exercise depends on the type and size of the mechanical stimulus. In rowing, athletes are exposed to low mechanical but large compression loads mainly on the trunk. Thus, this study aimed to investigate the impact of rowing on total and regional bone quality and bone turnover parameters in elite rowing athletes vs. control subjects.
MATERIALS AND METHODS
Twenty world-class rowers and twenty active, but not athletic, men participated in the study. Bone mineral density (BMD) and body mineral content (BMC) were assessed by dual-energy X-ray absorptiometry (DXA). Bone turnover markers (OPG and RANKL) in serum were assessed by Elisa method.
RESULTS
The current research revealed no statistical difference in total bone mineral density (TBMD) and total body mineral content (TBMC) between elite-level rowers and control subjects. Nevertheless, Trunk BMC (p=0.02) and Trunk BMC/TBMC ratio (p=0.01) were significantly higher in rowers than those in the control group. In contrast, in the control group, the Lower limbs BMC/TBMC ratio (p=0.007) was statistically higher. Furthermore, RANKL (p=0.011) and OPG (p=0.03) were statistically significantly higher in rowers, whereas the OPG/RANKL ratio (p=0.012) was statistically higher in the control group.
CONCLUSION
Rowing, as a non-weight-bearing exercise, did not alter total bone density but induced a remarkable redistribution of bone density from the lower limbs to the trunk. In addition, the current evidence suggests that the underlying molecular mechanism is based on turnover of intermediates, rather than solely bone redistribution.
Topics: Male; Humans; Bone Density; Control Groups; Enzyme-Linked Immunosorbent Assay; Exercise; Lower Extremity
PubMed: 36881058
DOI: 10.21873/invivo.13119 -
European Journal of Physical and... Jun 2019Control groups are used in clinical trials to increase confidence that any improvements in patient outcomes are due the therapy under investigation and not to other... (Review)
Review
BACKGROUND
Control groups are used in clinical trials to increase confidence that any improvements in patient outcomes are due the therapy under investigation and not to other factors. The reported effect size of any intervention is estimated from differences in outcomes achieved by intervention participants in comparison to control participants. Clinical heterogeneity in control groups across different studies can make the pooling of data from these studies in one meta-analysis questionable or reduce certainty in their results.
AIM
The aim of this study was to evaluate: 1) the variability in the types of control groups used in studies that have been pooled in meta-analyses in Cochrane reviews on neurorehabilitation interventions; and 2) how authors of Cochrane reviews on neurorehabilitation interventions have taken information about control groups into consideration when making decisions to undertake meta-analyses and interpreting their results.
METHODS
We searched the Cochrane library for reviews on neurorehabilitation interventions published between 2012 and 2016 that included at least one meta-analysis involving a control group. We extracted data from included reviews on the review characteristics, the characteristics of the included meta-analyses, and any information on how the review authors managed control groups in the conduct and interpretation of meta-analyses.
RESULTS
The 43 included reviews pooled data from 358 clinical trials, with an average of 5±5 clinical trials (range: 2-45) contributing to each meta-analysis. The majority of clinical trials involved a control group containing active treatments (61.7%; 221 of 358), often "treatment as usual" controls without any additional placebo or sham intervention. Over half (58.1%; 25 of 43) of the included meta-analyses involved pooling of data from studies with a mix of different types of control groups, with an additional 25.6% pooling data from studies where control participants had received a range of different active treatments. The influence of different control groups on the summary results from meta-analyses was not analyzed in 21 (48.8%) of the included reviews.
CONCLUSIONS
Further work is needed to develop: standardized ways to categorize control conditions in rehabilitation trials; more guidance on reporting criteria for control groups in rehabilitation trials; and agreed methods for managing different control types in one meta-analysis.
Topics: Control Groups; Humans; Meta-Analysis as Topic; Neurological Rehabilitation; Randomized Controlled Trials as Topic; Research Design; Systematic Reviews as Topic
PubMed: 30961346
DOI: 10.23736/S1973-9087.19.05795-2 -
JAMA Network Open Nov 2023Mobile mental health applications (apps) for moderate to severe depression are proliferating, likely owing to their capacity to overcome the limitations of conventional... (Meta-Analysis)
Meta-Analysis
IMPORTANCE
Mobile mental health applications (apps) for moderate to severe depression are proliferating, likely owing to their capacity to overcome the limitations of conventional psychotherapy, but research on the potential moderators of treatment efficacy is lacking.
OBJECTIVE
To examine the treatment efficacy associated with mobile app interventions for moderate to severe depression and identify the potential moderators associated with better treatment outcomes.
DATA SOURCES
PubMed, Embase, and PsycINFO were searched from their inception to January 22, 2023.
STUDY SELECTION
Only randomized clinical trials evaluating mobile app treatments in adults with moderate to severe depression that published their results in English were included in the analysis.
DATA EXTRACTION AND SYNTHESIS
Three independent researchers extracted and assessed relevant studies, their risk of bias, the characteristics of the population and study design, and the components of the intervention program following the Preferred Reporting Items for Systematic Reviews and Meta-analyses reporting guidelines. A fixed-effects model was used for data analysis, and exploratory post hoc meta-regression and subgroup analyses were also conducted. Data were analyzed from February 16 to March 25, 2023.
MAIN OUTCOMES AND MEASURES
The main outcome was changes in depression symptom severity from before to after treatment, measured by standardized depression assessment instruments. Secondary outcomes included study-, intervention-, and patient-level factors associated with app efficacy.
RESULTS
Of 2128 studies identified, 13 studies evaluating 16 intervention apps with 1470 participants with moderate to severe depression were included in the analysis. The overall pooled effect size of mobile app interventions vs both active and inactive control groups was 0.50 (95% CI, 0.40 to 0.61). Interventions with in-app notifications were associated with significantly lower treatment outcomes (standardized mean difference [SMD], 0.45; 95% CI, 0.29-0.60) than interventions without (SMD, 0.71; 95% CI, 0.54-0.87; P = .02). In addition, app interventions delivered for less than 8 weeks were associated with a significantly greater effect size (SMD, 0.77; 95% CI, 0.59-0.96) than interventions delivered for 8 weeks or longer (SMD, 0.43; 95% CI, 0.30-0.57; P = .004).
CONCLUSIONS AND RELEVANCE
In this systematic review and meta-analysis, the feasibility and efficacy of mobile app interventions were supported in treating moderate and severe depression, and practical implications were also provided for developing effective app-based interventions in clinical practice.
Topics: Adult; Humans; Depression; Depressive Disorder, Major; Mobile Applications; Behavior Therapy; Control Groups
PubMed: 37983028
DOI: 10.1001/jamanetworkopen.2023.44120 -
Physiology (Bethesda, Md.) Aug 2011Skeletal muscle innervation differs between vertebrates and insects. Insect muscle fibers exhibit graded electrical potentials and are innervated by excitatory,... (Review)
Review
Skeletal muscle innervation differs between vertebrates and insects. Insect muscle fibers exhibit graded electrical potentials and are innervated by excitatory, inhibitory, and also neuromodulatory motoneurons. The latter form a unique class of unpaired neurons with bilaterally symmetrical axons that release octopamine to alter the efficacy of synaptic transmission and regulate muscle energy metabolism by activating glycolysis. Octopaminergic neurons that innervate muscles with a high energy demand, for example, flight muscles that move the wings of a locust up and down, are active during rest but are inhibited during flight and its preparatory phase, a jump. Therefore, it is argued that these neurons are involved in providing locusts with the necessary fuel at takeoff, but then may aid the switch to lipid oxidation during flight. In general, the octopaminergic system may switch the whole organism from a tonic to a dynamic state.
Topics: Animals; Humans; Insecta; Motor Activity; Motor Neurons; Muscle, Skeletal; Synaptic Transmission
PubMed: 21841077
DOI: 10.1152/physiol.00002.2011