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Force-Time Characteristics of Repeated Bouts of Depth Jumps and the Effects of Compression Garments
No full textNo studies have reported ground reaction force (GRF) profiles of the repeated depth jump (DJ) protocols commonly used to study exercise-induced muscle damage. Furthermore, while compression garments (CG) may accelerate recovery from exercise-induced muscle damage, any effects on the repeated bout effect are unknown. Therefore, we investigated the GRF profiles of 2 repeated bouts of damage-inducing DJs and the effects of wearing CG for recovery. Nonresistance-trained males randomly received CG (n = 9) or placebo (n = 8) for 72 hours recovery, following 20 × 20 m sprints and 10 × 10 DJs from 0.6 m. Exercise was repeated after 14 days. Using a 3-way (set × bout × group) design, changes in GRF were assessed with analysis of variance and statistical parametric mapping. Jump height, reactive strength, peak, and mean propulsive forces declined between sets (P < .001). Vertical stiffness, contact time, force at zero velocity, and propulsive duration increased (P < .05). According to statistical parametric mapping, braking (17%-25% of the movement) and propulsive forces (58%-81%) declined (P < .05). During the repeated bout, peak propulsive force and duration increased (P < .05), while mean propulsive force (P < .05) and GRF from 59% to 73% declined (P < .001). A repeated bout of DJs differed in propulsive GRF, without changes to the eccentric phase, or effects from CG.</p
Access, dignity, and choice: social supermarkets and the end of the food bank model in the UK?
No full textLevels of food insecurity (FI) and the need for food support have increased dramatically since the COVID-19 pandemic and the cost-of-living crisis. These crises also enabled substantial innovation in food support provision, including a move away from more traditional food bank models toward social supermarkets (SSM). These are characterized as not-for-profit social enterprises that sell mostly food, at low or symbolic prices to those living near or in poverty. In this article we provide a timely empirical account of SSMs and the experiences and perspectives of their members, focusing on three key themes: access, dignity, and choice. We use a mixed-methods approach based on questionnaires (n = 111) and interviews (n = 25) with SSMs members, engaging with local priorities and perspectives in the active co-creation of the research. Our findings demonstrate that SSM’s provision is more inclusive and mindful of the diversity and agency of their members, doing away with pre-conceived ideas of food support recipients as passive citizens. While not a panacea, we argue that SSMs offer an alternative model for providing food support and one that could be replicated broadly or used side-by-side with food banks
Strategic Behaviours in a Labour Market with Mobility-Restricting Contractual Provisions: Evidence from the National Hockey League
No full text© 2024, © YYYY, Oxford University Press. The attached document (embargoed until 27 March 2026) is an author produced version of a paper published in Oxford Economic Papers uploaded in accordance with the publisher’s self-archiving policy. The final published version (version of record) is available online at the link. Some minor differences between this version and the final published version may remain. We suggest you refer to the final published version should you wish to cite from it
Book Review: Words for a Dying World: Stories of Grief and Courage from the Global Church
No full textAdherence to unhealthy diets is associated with altered frontal gamma-aminobutyric acid and glutamate concentrations and grey matter volume: preliminary findings
No full textCommon mental disorders (CMD) are associated with impaired frontal excitatory/inhibitory (E/I) balance and reduced grey matter volume (GMV). Larger GMV (in the areas that are implicated in CMD-pathology) and improved CMD-symptomatology have been observed in individuals who adhere to high quality diets. Moreover, preclinical studies have shown altered neurometabolites (primarily gamma-aminobutyric acid: GABA and glutamate: GLU) in relation to diet quality. However, neurochemical correlates of diet quality and how these neurobiological changes are associated with CMD and with its transdiagnostic factor, rumination, is unknown in humans. Therefore, in this study, we examined the associations between diet quality and frontal cortex neuro-chemistry and structure, as well as CMD and rumination in humans. Thirty adults were classified into high and low diet quality groups and underwent 1H-MRS to measure medial prefrontal cortex (mPFC) metabolite concentrations and volumetric imaging to measure GMV. Low (vs High) diet quality group had reduced mPFC-GABA and elevated mPFC-GLU concentrations, as well as reduced right precentral gyrus (rPCG) GMV. However, CMD and rumination were not associated with diet quality. Notably, we observed a significant negative correlation between rumination and rPCG-GMV and a marginally significant association between rumination and mPFC-GLU concentrations. There was also a marginally significant association between mPFC-GLU concentrations and rPCG-GMV. Adhering to unhealthy dietary patterns may be associated with compromised E/I balance, and this could affect GMV, and subsequently, rumination
