Publications by authors named "Peixuan Zheng"

The U.S. National Health and Nutrition Examination Survey (NHANES) physical activity monitor datasets for 2011-12 and 2013-14 were released in late 2020.

View Article and Find Full Text PDF

Background: Vascular comorbidities are prevalent in persons with multiple sclerosis (MS), yet less is known about underlying vascular function (VF). We performed a systematic review with meta-analysis of studies that compared VF in persons with MS and healthy controls and examined factors that may moderate the difference in vascular outcomes between groups.

Methods: We conducted a systematic search using PubMed/MEDLINE, CINAHL, and Embase from inception through March 2024.

View Article and Find Full Text PDF

Background: Older adults with multiple sclerosis (MS) present with low physical activity participation, cognitive and ambulatory dysfunctions, and compromised quality of life (QOL).

Objective: We propose a NIH Stage-I, randomized controlled trial (RCT) that examines the feasibility and efficacy of a 16-week theory-based, remotely-delivered, exercise training program for improving cognitive and physical functions in older adults with MS who have moderate mobility disability without severe cognitive impairment.

Methods: This Stage-I study utilizes a parallel-group RCT design.

View Article and Find Full Text PDF

Background: Cadence-controlled walking may be a desirable approach for older adults to self-monitor exercise intensity and achieve physical activity guidelines. We examined the acute effects of cadence-controlled walking on cognition and vascular function in physically inactive older adults.

Methods: In a randomized crossover design, 26 participants (65% females, 67.

View Article and Find Full Text PDF

We documented reporting and rates of drop-out, adherence, and compliance from 40 randomized controlled trials (RCTs) included in our meta-analysis on safety of exercise training (ET) in MS. We adopted definitions and metrics of adherence and compliance provided by the MoXFo adherence group. Drop-out was reported in 100% of the RCTs and approximated 10% for intervention and control conditions.

View Article and Find Full Text PDF

Background: Physical activity (PA) represents a promising behavioral approach for managing cognitive dysfunction in multiple sclerosis (MS). However, there is a lack of information on the pattern of free-living PA intensity (e.g.

View Article and Find Full Text PDF

Background: Persons with multiple sclerosis (MS) engage in less physical activity than the general population, and the disease manifestations and comorbidity conditions might further predispose them toward sedentary behavior (SB) among this population. We performed a systematic review with meta-analysis of studies that compared SB in persons with MS and non-MS controls, and examined factors that may moderate the difference in SB between the two groups.

Methods: We conducted a systematic search using PubMed, PsycINFO, Scopus, and CINAHL from inception up to August 2022, and identified studies that involved group comparison of SB outcomes between MS and non-MS controls.

View Article and Find Full Text PDF

Background: Physical function and walking performance have become important outcomes in clinical trials and rehabilitation involving persons with multiple sclerosis (MS). However, assessments conducted in controlled settings may not reflect real-world capacity and movement in a natural environment. Peak cadence via accelerometry might represent a novel measure of walking intensity and prolonged natural effort under free-living conditions.

View Article and Find Full Text PDF

The immune-suppressive tumour microenvironment represents a major obstacle to effective immunotherapy. Pathologically activated neutrophils, also known as polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs), are a critical component of the tumour microenvironment and have crucial roles in tumour progression and therapy resistance. Identification of the key molecules on PMN-MDSCs is required to selectively target these cells for tumour treatment.

View Article and Find Full Text PDF
Article Synopsis
  • This article analyzes the physical activity levels of individuals with multiple sclerosis (MS) compared to healthy controls and other clinical groups based on studies published between 2016 and 2022.
  • The meta-analysis included 24 studies and found a moderate difference in physical activity where those with MS were less active than controls, but no significant difference compared to other clinical populations.
  • The study suggests that while MS patients have improved in physical activity over the past decade, there is still a significant gap compared to controls; thus, better physical activity programs specifically for this community are necessary.
View Article and Find Full Text PDF

Background: Multiple sclerosis (MS) is an immune-mediated, neurodegenerative disease of the central nervous system that manifests in symptoms that compromise health-related quality of life (HRQOL). HRQOL focuses on a person's overall, subjective evaluation of health status primarily in the physical and mental domains. Exercise training is a form of rehabilitation for managing MS-related outcomes that might influence HRQOL.

View Article and Find Full Text PDF

Background: Cognitive dysfunction is one of the most common consequences of multiple sclerosis (MS). Recent studies have noted a high incidence of vascular comorbidity that might be associated with cognitive decline among persons with MS. However, there is a lack of evidence on vascular biomarkers (e.

View Article and Find Full Text PDF

Background: The 30-Second Sit-To-Stand (30SSTS) is a quick, inexpensive, safe, and widely used clinical measure of lower extremity function. To date, there is limited evidence regarding the use of 30SSTS in multiple sclerosis (MS). The purpose of this study was to examine the construct validity of the 30SSTS test in persons with MS compared with non-MS healthy controls.

View Article and Find Full Text PDF

Background: Walking cadence (steps/min) has emerged as a valid proxy of physical activity intensity, with consensus across numerous laboratory-based treadmill studies that ≥100 steps/min approximates absolutely defined moderate intensity (≥3 metabolic equivalents; METs). We recently reported that this cadence threshold had a classification accuracy of 73.3% for identifying moderate intensity during preferred pace overground walking in young adults.

View Article and Find Full Text PDF

Physical activity is known to confer numerous health benefits. However, few studies have assessed the prolonged impact of participation in different sports on health and fitness. The purpose of this cross-sectional study was to compare the impact of long-term participation (i.

View Article and Find Full Text PDF

To explore the emotional attitudes of microblog users in the different COVID-19 stages in China, this study used data mining and machine-learning methods to crawl 112,537 Sina COVID-19- related microblogs and conduct sentiment and group difference analyses. It was found that: (1) the microblog users' emotions shifted from negative to positive from the second COVID-19 pandemic phase; (2) there were no significant differences in the microblog users' emotions in the different regions; (3) males were more optimistic than females in the early stages of the pandemic; however, females were more optimistic than males in the last three stages; and (4) females posted more microblogs and expressed more sadness and fear while males expressed more anger and disgust. This research captured online information in real-time, with the results providing a reference for future research into public opinion and emotional reactions to crises.

View Article and Find Full Text PDF

The Compendium of Physical Activities reports that walking at 2.5 mph associates with absolutely-defined moderate intensity (i.e.

View Article and Find Full Text PDF

Background: The purpose of this study was to determine the dose-response association between habitual physical activity (PA) and cognitive function using a nationally representative data set of U.S. older adults aged ≥60 years.

View Article and Find Full Text PDF

Unlabelled: To reveal the complex relationships between quarantine and mental health during COVID-19, a meta-analysis was conducted involving 34 articles and a total sample size of 134,061. As the relationship between quarantine and mental health was found to be affected by the sampling objects and national factors, a random-effects model was applied for the meta-analysis. First, a heterogeneity test and sensitivity analysis were conducted to determine whether there was heterogeneity in the samples, after which a funnel chart, Rosenthal's Classic Fail-safe N test and Egger's test were applied to further determine whether there was publication bias in the included samples.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessioncq93mblq49cp7agtuulbt675tdctblrp): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once