Background This paper is a follow‐up study continuing the COVISTRESS network previous research regarding health‐related determinants. Objective The aim was to identify the main consequences of COVID‐19 lockdown on Body Mass Index and Perceived Fragility , related to Physical Activity (PA), for different categories of populations, worldwide. Design The study design included an online survey, during the first wave of COVID‐19 lockdown, across different world regions. Setting and participants The research was carried out on 10 121 participants from 67 countries. The recruitment of participants was achieved using snowball sampling techniques via social networks, with no exclusion criteria other than social media access. Main outcome measures Body Mass Index , Physical Activity , Perceived Fragility and risk of getting infected items were analysed. SPSS software, v20, was used. Significance was set at P < .05. Results Body Mass Index significantly increased during lockdown. For youth and young adults (18‐35 years), PA decreased by 31.25%, for adults (36‐65 years) by 26.05% and for the elderly (over 65 years) by 30.27%. There was a high level of Perceived Fragility and risk of getting infected for female participants and the elderly. Correlations between BMI , Perceived Fragility and PA were identified. Discussion and Conclusions The research results extend and confirm evidence that the elderly are more likely to be at risk, by experiencing weight gain, physical inactivity and enhanced Perceived Fragility. As a consequence, populations need to counteract the constraints imposed by the lockdown by being physically active.

ObjectiveTo determine whether copeptin-us can rule out diagnosis of non-ST-segment elevation myocardial infarction (NSTEMI) without prolonged monitoring and serial blood sampling in patients with high-sensitive cardiac troponin I (hs-cTnT) below the 99th centile at presentation to the emergency department (ED).DesignProspective, non-randomised, individual blinded diagnostic accuracy study.SettingTwo EDs of a rural region of France.ParticipantsPatients with chest pain suspected of NSTEMI with onset within the last 12 h were considered for enrolment.InterventionsSerial clinical, electrographical and biochemical investigations were performed at admission and after 2, 4, 6 and 12 h. Hs-cTnT was measured using an assay with Dimension VISTA, Siemens. Copeptin was measured by the BRAHMS copeptin-us assay on the KRYPTOR Compact Plus system. The follow-up period was 90 days.Primary and secondary outcome measuresCopeptin, troponin, myoglobin and creatine kinase values. Clinical and paraclinical events. The final diagnosis was adjudicated blinded to copeptin result.ResultsDuring 12 months, 102 patients were analysed. Final diagnosis was NSTEMI for 7.8% (n=8), unstable angina for 3.9% (n=4), cardiac but non-coronary artery disease for 8.8% (n=9), non-cardiac chest pain for 52% (n=53) and unknown for 27.5% (n=28). There was no statistical difference for copeptin values between patients with NSTEMI and others (respectively 5.5 pmol/L IQR (3.1–7.9) and 6.5 pmol/L IQR (3.9–12.1), p=0.49). Only one patient with NSTEMI had a copeptin value above the cut-off of 95th centile at admission.ConclusionsIn this study, copeptin does not add a diagnostic value at admission to ED for patients with suspected acute coronary syndrome without ST-segment elevation and with hs-cTnT below the 99th centile.Trial registration numberClinicaltrials.gov identifier: NCT01334645.

Bérengère Ducrocq and Nathalie Rives both contributed as last co-authors.

Post-thawing sperm parameters, acrosome reacted and DNA fragmentation sperm are similar after storage in dry or liquid nitrogen tank for normozoospermia and altered sperm samples.Dry nitrogen tank conserves a stable temperature at -194°C despite repeated opening whatever the storage floor level.Sperm storage in dry tank is safety for samples and operators.

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