Acute effects of walking on inflammatory and cardiovascular risk in sedentary post-menopausal women     

Davis J  Murphy M  Trinick T  Duly E  Nevill A  Davison G 《Journal of sports sciences》2008,26(3):303-309

Biochemical markers of inflammation are emerging as new predictors of risk of cardiovascular disease (CVD) and may alter acutely with exercise. Few studies have been conducted on the effects of walking on these markers or whether different walking intensities elicit varied effects. As there is growing interest in modifiable lifestyle factors such as walking to reduce CVD risk, these inflammatory responses warrant investigation. The aim of this study was to compare the effects of walking at 50% versus 70% of predicted maximal heart rate on C-reactive protein (CRP), plasma fibrinogen, and triglycerides in sedentary post-menopausal women. Twelve post-menopausal women (mean age 58 years, s +/-6; stature 1.62 m, s+/-0.06; body mass 66.8 kg, s +/-6.2) completed two 30-min treadmill walks in a randomized cross-over design. Fasted blood samples were taken (for the determination of plasma fibrinogen, CRP, and lipids) before, immediately after, and 1 and 24 h after exercise. Triglyceride concentrations decreased from pre-exercise to 24 h post exercise at both walking intensities (time x group interaction, P < 0.05). No significant effects were observed for plasma fibrinogen, CRP, total cholesterol, low-density or high-density lipoprotein cholesterol (time x group interaction, P > 0.05). The results of this study suggest that fasting plasma triglycerides are decreased on the morning after 30 min of brisk walking at either 50% or 70% of maximal heart rate (moderate and vigorous intensity).  相似文献   

Towards a general modeling framework of resource competition in cognitive development     

Jill de Ron  Marie Deserno  Donald Robinaugh  Denny Borsboom  Han L. J. van der Maas 《Child development》2023,94(6):1432-1453

The current paper presents an integrated formal model of typical and atypical development based on the mechanisms of mutualism and resource competition. The mutualistic network model is extended with the dynamics of competition for limited resources, such as time and environmental factors. The proposed model generates patterns that resemble established phenomena in cognitive development: the positive manifold, developmental phases, developmental delays and lack of early indicators in atypical development, developmental regression, and “quasi-autism” caused by extreme environmental deprivation. The presented modeling framework fits a general movement towards formal theory construction in psychology. The model is easy to replicate and develop further, and we offer several avenues for future work.  相似文献   

Mediating Our Knowledge     

Marie Jeanne Adams 《Curator: The Museum Journal》1983,26(4):275-286

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Promoting access to decent work: career counselors’ experiences with career construction counseling     

Dalene  Kirsten Marie 《International Journal for Educational and Vocational Guidance》2022,22(3):603-622

International Journal for Educational and Vocational Guidance - This article is based on career counselors’ experiences with how career construction counseling (CCC) can benefit clients, and...  相似文献