Effects of reallocating time in different activity intensities on health and fitness: a cross sectional study

BACKGROUND: The effects of replacing time in specific activity categories for other categories (e.g. replacing sedentary time with light activity) on health and fitness are not well known. This study used isotemporal substitution to investigate the effects of substituting activity categories in an equal time exchange fashion on health and fitness in young people. METHODS: Participants were drawn from schools in Camden, London (n = 353, mean age 9.3 ± 2.3 years). Time sedentary, in light and in moderate-to-vigorous activity (MVPA) was measured via accelerometry. The effects of substituting time in activity categories (sedentary, light and MVPA) with equivalent time in another category on health and fitness were examined using isotemporal substitution. RESULTS: In single and partition models, MVPA was favourably associated with body fat %, horizontal jump distance and flexibility. Time sedentary and in light activity were not associated with health and fitness outcomes in these models. In substitution models, replacing one hour of sedentary time with MVPA was favourably associated with body fat % (B = -4.187; 95% confidence interval (CI), -7.233, -1.142), horizontal jump distance (B = 16.093; 95% CI, 7.476, 24.710) and flexibility (B = 4.783; 95% CI, 1.910, 7.656). Replacing time in light activity with MVPA induced similar benefits but there were null effects for replacing sedentary with light intensity. CONCLUSION: Substituting time sedentary and in light activity with MVPA was associated with favourable health and fitness. Time in sedentary behaviour may only be detrimental to health and fitness when it replaces time in MVPA in young people

Reducing the attitude-behavior gap in sustainable consumption: a theoretical proposition and the American electric vehicle market

Purpose: The purpose of this paper is to re-evaluate the sustainable attitude-behavior gap by reconsidering the cognitive-rational aspects of consumer purchase behavior. We aim to show how companies can benefit from focusing on hedonic aspects of consumption in their marketing of sustainable products. We claim that consumer culture research needs to examine the link between hedonic, aesthetic, and cognitive-rational aspects of sustainable consumption. Methodology/approach: We use the electric vehicle marketing strategy in the United States as an example of an approach to bridge the attitude-behavior gap. More specifically, we focus on the car manufacturer Tesla as an example of marketing a sustainable product. Findings: We find that Tesla's marketing strategy focuses on aesthetics and hedonics-ludic performance. Similarly to other luxury cars, Tesla markets itself with a full compliment of consumer benefits. Compared to economical electric vehicles, sustainability is not the primary focus of Tesla's marketing communication strategy. Research limitations/implications: Sustainable consumption theory benefits from examining the interlinking of hedonic, aesthetic and cognitive-rational aspects product purchasing and use. Future research in the development of sustainable consumption theory in additional complex product categories is needed. Practical implications: Greater regard for consumer experience in sustainable consumption offers the potential for additional strategies to bridge the attitude-behavior gap and marketing of sustainable goods. Originality/value: We move beyond the attitude-behavior gap by not only focusing on expressed attitudes of sustainability, but also focusing on the hedonic aspects at play in sustainable consumption

Psychological wellbeing and physical activity in children and adolescents with inflammatory bowel disease compared to healthy controls

Abstract Background Children and adolescents with inflammatory bowel disease (IBD) report impairments in daily activities, social interactions and coping. Findings regarding psychological functioning are inconsistent, while limited information is available on objectively assessed physical activity (PA). The aims of the present study were therefore to compare anthropometric dimensions, blood values, psychological functioning and PA of children and adolescents with IBD with healthy controls. Methods Forty-seven children and adolescents took part in the study. Of these, 23 were diagnosed with IBD (mean age: 13.88 years, 44% females). The IBD group was divided into a medically well adjusted “remission-group” (n = 14; IBD-RE) and a group with an “active state” of disease (n = 8; IBD-AD). Healthy controls (n = 24; HC) were age- and gender-matched. Participants’ anthropometric data, blood values and objective PA were assessed. Further, participants completed questionnaires covering socio-demographic data and psychological functioning. Results Participants with IBD-AD showed higher erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) values, haemoglobin, and leukocyte values. IBD-AD had poorer psychological functioning and lower PA (average steps per day) compared to IBD-RE and HC. No mean differences were found between IBD-RE and HC. Conclusions The pattern of results suggests that effective medical treatment of IBD in children and adolescents is associated with favorable physiological parameters, psychological dimensions and PA. Psychological counselling of children and adolescents in an active state of IBD seem to be advised in addition to standard treatment schedules. Trial registration NCT NCT02264275 ; Registered 8 October 2014