The long-term pulmonary outcomes of coronavirus disease 2019 (COVID-19) are unknown. We aimed to describe self-reported dyspnoea, quality of life, pulmonary function, and chest CT findings three months following hospital admission for COVID-19. We hypothesised outcomes to be inferior for patients admitted to intensive care units (ICU), compared with non-ICU patients.Discharged COVID-19-patients from six Norwegian hospitals were consecutively enrolled in a prospective cohort study. The current report describes the first 103 participants, including 15 ICU patients. Modified Medical Research Council dyspnoea scale (mMRC), EuroQol Group's Questionnaire, spirometry, diffusion capacity (DLCO), six-minute walk test, pulse oximetry, and low-dose CT scan were performed three months after discharge.mMRC was >0 in 54% and >1 in 19% of the participants. The median (25th–75th percentile) forced vital capacity and forced expiratory volume in one second were 94% (76, 121) and 92% (84, 106) of predicted, respectively. DLCO was below the lower limit of normal in 24%. Ground-glass opacities (GGO) with >10% distribution in ≥1 of 4 pulmonary zones were present in 25%, while 19% had parenchymal bands on chest CT. ICU survivors had similar dyspnoea scores and pulmonary function as non-ICU patients, but higher prevalence of GGO (adjusted odds ratio [95% confidence interval] 4.2 [1.1, 15.6]) and performance in lower usual activities.Three months after admission for COVID-19, one fourth of the participants had chest CT opacities and reduced diffusion capacity. Admission to ICU was associated with pathological CT findings. This was not reflected in increased dyspnoea or impaired lung function.

OBJECTIVEInsulin resistance and β-cell dysfunction both are important contributors to the pathogenesis of type 2 diabetes. Exercise training improves insulin sensitivity, but its effects on β-cell function are less well studied.RESEARCH DESIGN AND METHODSSedentary, overweight adults were randomized to control or one of three 8-month exercise programs: 1) low amount/moderate intensity, 2) low amount/vigorous intensity, or 3) high amount/vigorous intensity. Of 387 randomized, 260 completed the study and 237 had complete data. Insulin sensitivity (Si), acute insulin response to glucose (AIRg), and the disposition index (DI = Si × AIRg) were modeled from an intravenous glucose tolerance test.RESULTSCompared with control subjects, all three training programs led to increases in DI. However, the moderate-intensity group experienced a significantly larger increase in DI than either of the vigorous-intensity groups and through a different mechanism. The high-amount/vigorous-intensity group improved Si and had a compensatory reduction in AIRg, whereas the moderate-intensity group had a similar improvement in Si but almost no reduction in AIRg. Importantly, the inactive control group experienced a significant increase in fasting glucose.CONCLUSIONSTo the extent that the DI accurately reflects β-cell function, we observed that both moderate- and vigorous-intensity exercise training improved β-cell function, albeit through distinct mechanisms. It is not clear which of these mechanisms is preferable for maintenance of metabolic health. While moderate-intensity exercise led to a larger improvement in DI, which may reflect a transition toward a more normal DI, longer-term investigations would be necessary to determine which was more effective at reducing diabetes risk.

We identified TERT, RTEL1, and PARN-three telomere-related genes previously implicated in familial pulmonary fibrosis-as significant contributors to sporadic IPF. These results support the idea that telomere dysfunction is involved in IPF pathogenesis.