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- Birkeland Nielsen, M., et al.
(författare)
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Authentic leadership and its relationship with risk perception and safety climate
- 2013
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Ingår i: Leadership & Organization Development Journal. - 0143-7739 .- 1472-5347. ; 34:4
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Tidskriftsartikel (refereegranskat)abstract
- Purpose – This study aims to examine how authentic leadership relates to risk perception in safety critical organizations (SCOs). It is hypothesized that authentic leaders influence risk perception through the mediating effect of safety climate.Design/methodology/approach – Using a survey design, the variables were assessed in a cross-sectional sample of 293 offshore oil installation workers from a single company.Findings – The authors’ findings show that follower ratings of authentic leadership are negatively related to risk perception and positively associated with ratings of safety climate. Controlling for personality characteristics and leadership responsibility among respondents, the results confirm the hypothesis in that safety climate mediates the relationship between authentic leadership and risk perception. Safety climate had the strongest relationship with risk perception when assessed as a higher order construct.Originality/value – This study is one of the first to investigate the relationship between authentic leadership and safety. The results indicate that authentic leadership and safety climate are important factors that relate to risk perception in SCOs. The authors’ findings suggest that SCOs should consider recruiting and developing authentic leaders to foster positive safety climates and risk management.
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- Birkheim, K., et al.
(författare)
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The Role of Psychological Capital in Perception of Safety Climate Among Air Traffic Controllers
- 2013
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Ingår i: Journal of leadership & organizational studies. - : SAGE Publications. - 1548-0518 .- 1939-7089. ; 20:2, s. 232-241
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Tidskriftsartikel (refereegranskat)abstract
- Previous research has shown that psychological capital (PsyCap) is associated with desired employee behavioral and performance outcomes. Extending previous research, we examine, in two studies, if the PsyCap of Norwegian air traffic controllers is related to their perceptions of safety climate. Based on bootstrapping procedures, results from Study 1 (N = 77) and Study 2 (N = 38) revealed that PsyCap was positively correlated with safety climate. In Study 1, PsyCap explained 31% of the variance in safety climate. Controlling for mediating effects of positive and negative emotions in Study 2, PsyCap explained 15.5% of the variance. These results provide first-time empirical evidence linking PsyCap to safety climate in safety critical organizations.
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- Gjelstad, I. M. F., et al.
(författare)
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Expression of perilipins in human skeletal muscle in vitro and in vivo in relation to diet, exercise and energy balance
- 2012
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Ingår i: Archives of Physiology and Biochemistry. - : Informa UK Limited. - 1381-3455 .- 1744-4160. ; 118:1, s. 22-30
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Tidskriftsartikel (refereegranskat)abstract
- The perilipin proteins enclose intracellular lipid droplets. We describe the mRNA expression of the five perilipins in human skeletal muscle in relation to fatty acid supply, exercise and energy balance. We observed that all perilipins were expressed in skeletal muscle biopsies with the highest mRNA levels of perilipin 2, 4 and 5. Cultured myotubes predominantly expressed perilipin 2 and 3. In vitro, incubation of myotubes with fatty acids enhanced mRNA expression of perilipin 1, 2 and 4. In vivo, low fat diet increased mRNA levels of perilipin 3 and 4. Endurance training, but not strength training, enhanced the expression of perilipin 2 and 3. Perilipin 1 mRNA correlated positively with body fat mass, whereas none of the perilipins were associated with insulin sensitivity. In conclusion, all perilipins mRNAs were expressed in human skeletal muscle. Diet as well as endurance exercise modulated the expression of perilipins.
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- Home, P. D., et al.
(författare)
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Improved health status with insulin degludec compared with insulin glargine in people with Type 1 diabetes
- 2012
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Ingår i: Diabetic Medicine. - Hoboken, USA : Wiley-Blackwell. - 0742-3071 .- 1464-5491. ; 29:6, s. 716-720
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Tidskriftsartikel (refereegranskat)abstract
- Aims: The efficacy and safety of insulin degludec (degludec), a new-generation ultra-long-acting basal insulin, was compared with insulin glargine (glargine) in people with Type 1 diabetes mellitus in a 16-week, open-label, randomized trial. Health status, an important aspect of effective diabetes management, was also assessed. Methods: Degludec (n = 59) or glargine (n = 59) were injected once daily, with insulin aspart at mealtimes. Health status assessment utilized the validated Short Form 36 Health Survey, version 2, which has two summary component scores for mental and physical well-being, each comprising four domains.Results: At study end, HbA1c reductions were comparable between groups, but confirmed nocturnal hypoglycaemia was significantly less frequent with degludec [relative rate 0.42 (95% CI 0.250.69)], and overall hypoglycaemia numerically less frequent [relative rate 0.72 (95% CI 0.521.00)]. After 16 weeks, a significant improvement in Short Form 36 Health Survey mental component score of +3.01 (95% CI 0.325.70) was obtained for degludec against glargine, attributable to significant differences in the social functioning [+8.04 (95% CI 1.8914.18)] and mental health domains [+2.46 (95% CI 0.104.82)]. For mental component score, Cohens effect size was 0.42, indicating a small-to-medium clinically meaningful difference. The physical component score [+0.66 (95% CI 2.30 to 3.62)] and remaining domains were not significantly different between degludec and glargine.Conclusions: In the context of comparable overall glycaemic control with glargine, degludec improved mental well-being as measured using the mental component score of the Short Form 36 Health Survey. The improvements in overall mental component score and the underlying social functioning and mental health domains with degludec compared with glargine may relate to the observed reduction in hypoglycaemic events.
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