Objective To estimate the global prevalence of meeting the WHO guidelines for both aerobic and muscle-strengthening activities (MSA) in populations aged ≥5 years, and whenever possible to explore this prevalence according to sociodemographic and lifestyle factors. Design A systematic review and meta-analysis. Data sources Five databases were systematically searched for studies published from inception to September 2022. Eligibility criteria for selecting studies Articles with representative samples aged ≥5 years reporting the prevalence of meeting both aerobic and MSA guidelines were included. Results Twenty-one studies comprising 3 390 001 individuals from 31 countries were included. Overall adherence to the aerobic and MSA guidelines was 17.15% (95% CI 15.44% to 18.94%) in adults ≥18 years (n=3 337 603). Among adolescents aged 12–17 years, adherence to both guidelines was 19.45% (95% CI 16.34% to 22.75%) (n=52 398). No studies reported data for children aged 5–11 years. Women, older age, low/medium education levels, underweight or obesity, and poor and moderate self-rated health were associated with lower adherence to the physical activity guidelines (p<0.001) among adults, although the prevalence remained very low in all cases. Subgroup analyses were not conducted with children and adolescents due to a lack of studies. Conclusions Only one out of five adolescents and adults met the recommended combined aerobic and MSA guidelines. Large-scale public health interventions promoting both types of exercise are needed to reduce the associated burden of non-communicable diseases. PROSPERO registration number CRD42022338422.

The World Health Organization (WHO) has declared a world pandemic due to COVID-19, and several enacted measures such as compulsory confinement may have collateral consequences on both physical and mental health. We aimed to investigate associations between current physical activity (PA) and current perceived anxiety and mood among a sample of Spanish adults confined due to COVID-19 restrictions of movement. Using an online survey, we collected data on the Spanish adult population regarding health habits during the first days of enacted confinement. A total of 2250 participants (54.8% women) aged 35.3 (SD 13.6) completed the survey, which included questions about sociodemographic characteristics (i.e. age, gender, civil status, education, and occupation), health habits (i.e. prior PA, alcohol consumption, smoking, screen exposure, and sleep hours) and COVID-19 confinement context (i.e. number of isolation days, solitude, and exposure to COVID-19). Physical Activity Vital Sign (PAVS) short form was used to estimate weekly minutes of PA, whereas a single-item question was used to assess both current perceived anxiety and mood. We conducted weighted binomial logistic regressions to check associations between current adherence to WHO guidelines of PA and current perceived anxiety and mood of confined adults. Significant inverse associations between overall adherence to PA and current perceived anxiety in the final adjusted model (OR, 0.66; 95% CI, 0.54–0.79) as well as in several subgroup analyses such as younger women were observed. In addition, a borderline significant inverse association was found between current PA and current perceived worse mood when fully adjusted (OR, 0.82; 95% CI, 0.68–1.00); this association was significantly stronger in women than men. The results of the present study indicate that current PA adherence to WHO guidelines in the initial phase of COVID-19 confinement associates with both lower current perceived anxiety and lower current perceived worse mood among a sample of Spanish adults.

Cardiorespiratory fitness (CRF) is inversely associated with mortality in apparently healthy subjects and in some clinical populations, but evidence for the association between CRF and all-cause and/or cardiovascular disease (CVD) mortality in patients with established CVD is lacking. This study aimed to quantify this association. We searched for prospective cohort studies that measured CRF with cardiopulmonary exercise testing in patients with CVD and that examined all-cause and CVD mortality with at least 6 months of follow-up. Pooled hazard ratios (HRs) were calculated using random-effect inverse-variance analyses. Data were obtained from 21 studies and included 159,352 patients diagnosed with CVD (38.1% female). Pooled HRs for all-cause and CVD mortality comparing the highest vs. lowest category of CRF were 0.42 (95% confidence interval (95%CI): 0.28-0.61) and 0.27 (95%CI: 0.16-0.48), respectively. Pooled HRs per 1 metabolic equivalent (1-MET) increment were significant for all-cause mortality (HR = 0.81; 95%CI: 0.74-0.88) but not for CVD mortality (HR = 0.75; 95%CI: 0.48-1.18). Coronary artery disease patients with high CRF had a lower risk of all-cause mortality (HR = 0.32; 95%CI: 0.26-0.41) than did their unfit counterparts. Each 1-MET increase was associated with lower all-cause mortality risk among coronary artery disease patients (HR = 0.83; 95%CI: 0.76-0.91) but not lower among those with heart failure (HR = 0.69; 95%CI: 0.36-1.32). A better CRF was associated with lower risk of all-cause mortality and CVD. This study supports the use of CRF as a powerful predictor of mortality in this population.

This study sought to provide up-to-date pooled global estimates of diabetes-related amputation incidence from 2010 to 2020. Embase and Medline databases were searched for studies reporting the incidence rate (IR) of diabetes-related amputations from 2010 to 2020. IR estimates of diabetes-related amputations with associated 95% confidence interval (CI) per 100,000 individuals with diabetes were calculated. 23 studies were included, reporting 505,390 diabetes-related lower extremity amputations. IR of minor amputations was 139.97 (95% CI 88.18-222.16) per 100,000 individuals with diabetes, among patients with type 1 diabetes was 148.59 (95% CI 65.00-339.68) and in type 2 diabetes was 75.53 (95% CI 29.94-190.54). IR of major amputations was 94.82 (95% CI 56.62-158.80) per 100,000 individuals with diabetes, among patients with type 1 diabetes was 100.76 (95% CI 53.71-189.01) and among type 2 diabetes was 40.58 (95% CI 11.03-149.28). There were 83.84 annual amputations (95% CI 41.67-168.65) per 100,000 women with diabetes and 178.04 (95% CI 81.16-390.55) per 100,000 men. Globally, annual incidence of diabetes-related amputations from 2010 to 2020 has shown to disproportionately affect men and individuals with type 1 diabetes mellitus, although its incidence is not uniform across countries.

Objective: To quantify the association between physical activity and risk of SARS-CoV-2 infection, COVID-19-associated hospitalisation, severe illness and death due to COVID-19 in adults. Design: A systematic review and meta-analysis. Data sources: Three databases were systematically searched through March 2022. Eligibility criteria for selecting studies: Peer-reviewed articles reporting the association between regular physical activity and at least one COVID-19 outcome in adults were included. Risk estimates (ORs, relative risk (RR) ratios or HRs) were extracted and pooled using a random-effects inverse-variance model. Results: Sixteen studies were included (n=1 853 610). Overall, those who engaged in regular physical activity had a lower risk of infection (RR=0.89; 95% CI 0.84 to 0.95; I ² =0%), hospitalisation (RR=0.64; 95% CI 0.54 to 0.76; I ² =48.01%), severe COVID-19 illness (RR=0.66; 95% CI 0.58 to 0.77; I ² =50.93%) and COVID-19-related death (RR=0.57; 95% CI 0.46 to 0.71; I ² =26.63%) as compared with their inactive peers. The results indicated a non-linear dose–response relationship between physical activity presented in metabolic equivalent of task (MET)-min per week and severe COVID-19 illness and death (p for non-linearity <0.001) with a flattening of the dose–response curve at around 500 MET-min per week. Conclusions: Regular physical activity seems to be related to a lower likelihood of adverse COVID-19 outcomes. Our findings highlight the protective effects of engaging in sufficient physical activity as a public health strategy, with potential benefits to reduce the risk of severe COVID-19. Given the heterogeneity and risk of publication bias, further studies with standardised methodology and outcome reporting are now needed. PROSPERO registration number: CRD42022313629.