Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Variability in physical inactivity responses of university students during COVID-19 pandemic: A monitoring of daily step counts using a smartphone application
Effect of rearfoot strikes on the hip and knee rotational kinetic chain during the early phase of cuttings in female athletes
Using Machine Learning to Elucidate the Spatial and Genetic Complexity of the Ascending Aorta
Genetic Susceptibility to Atrial Fibrillation Identified via Deep Learning of 12-lead Electrocardiograms
Assessing our capability to predict the presence of respiratory diseases at the age of four using data available at one month of age
Performance of RT-PCR on saliva specimens compared to nasopharyngeal swabs for the detection of SARS-CoV-2 in children: A prospective comparative clinical trial
Evaluating the number of unvaccinated people needed to exclude to prevent SARS-CoV-2 transmissions
Assessing the impact of a national clinical guideline for the management of chronic pain on opioid prescribing rates: A controlled interrupted time series analysis
Polar Vantage and Oura physical activity and sleep trackers: A validation and comparison study
Cancer risk perception and knowledge and physician communication behaviors: specific influences on cervical cancer and colorectal cancer screening in women 50-65 years old
London Ramadan Fasting Study (LORANS): Rationale, design, and methods
Spectrum of neurological manifestations and systematic evaluation of cerebrospinal fluid for SARS-CoV2 in patients admitted to hospital during the COVID-19 epidemic in South Africa
Assessing performance and clinical usefulness in prediction models with survival outcomes: practical guidance for Cox proportional hazards models
The Microbiome in Adult Acute Appendicitis
Multiple sclerosis disease-modifying therapies and COVID-19 vaccines: A practical review and meta-analysis
SARS-CoV-2 vaccine Alpha and Delta variant breakthrough infections are rare and mild, but happen relative early after vaccination
Chronic fatigue associated with post-COVID syndrome versus transient fatigue caused by high intensity exercise: are they comparable in terms of vascular effects?
The prevalence of olfactory dysfunction and its associated factors in patients with COVID-19 infection
Age-based variability in the association between restraint use and injury type and severity
Prospective sero surveillance among healthcare workers vaccinated with ChAdOx1 nCoV-19 Corona vaccine in a tertiary hospital of Kerala, India
A Cross-Country Analysis of the Effectiveness of COVID-19 Vaccines in Reducing Mortality Rates within the EU
BrainXcan identifies brain features associated with behavioral and psychiatric traits using large scale genetic and imaging data
The mass balance model of obesity explains the weight loss advantage of a low-carbohydrate diet over a isocaloric low-fat diet
Vaccine effectiveness of Ad26.COV2.S against symptomatic COVID-19 and clinical outcomes in Brazil: a test-negative study design
A polygenic score-based approach to identify gene-drug interactions stratifying breast cancer risk
Parental income gradients in child and adolescent mortality: Norwegian trends over half a century