Factors associated with pain-related functional interference in people with chronic low back pain enrolled in a physical exercise programme: the role of pain, sleep, and quality of life.

Objective: To identify the factors associated with the pain-related functional interference level in people with chronic low back pain.

Design: Cross-sectional.

Subjects/patients: Chronic low back pain patients.

Enhancing exercise intervention for patients with post-acute COVID-19 syndrome using mobile health technology: The COVIDReApp randomised controlled trial protocol.

Objectives: To analyse the effectiveness of a physical exercise programme guided by a mobile health technology system (COVIDReApp) for patients with post-acute COVID-19 syndrome. This syndrome is a multisystem disease that occurs in people with a history of COVID-19 between 1 and 3 months after the onset of the disease. This study will assess the impact of the intervention on fatigue, post-exertional dyspnoea, quality of life, pain severity, physical fitness, anxiety, depression and cognitive function.

Prevalence and epidemiological characteristics of chronic pain in the Spanish population. Results from the pain barometer.

Background: Chronic pain (CP) is a public health problem worldwide.

Aim: To update the prevalence of CP and compare the clinical and social characteristics of people with CP with those with non-chronic continuous pain and a group without pain.

Methods: An observational cross-sectional study was carried out in a representative sample of 7058 adults from the Spanish population.

Psychometric Properties of the Pictorial Pain Interference Questionnaire for Assessing Functional Interference in Chronic Low Back Pain.

Objective: To analyze the psychometric properties of the Pictorial Pain Interference Questionnaire (PPIQ) for evaluating functional interference in the population with chronic low back pain (CLBP).

Design: Cross-sectional study.

Setting: Rehabilitation Unit in a hospital.

Prevalence of diagnosed and undiagnosed osteoarthrosis and associated factors in the adult general Spanish population.

Objective: To determine the prevalence and related factors of diagnosed osteoarthrosis (DO) and undiagnosed osteoarthrosis (UO) in the general Spanish adult population.

Setting: Cross-sectional study with data from the Spanish National Health Survey 2017.

Participants: N=23,089 adults.