Massey Documents by Type
Permanent URI for this communityhttps://mro.massey.ac.nz/handle/10179/294
Browse
4 results
Search Results
Item Does cooling affect skeletal muscle glycogen replenishment after an acute bout of fear-induced exertional hyperthermia in blesbok (Damaliscus pygargus phillipsi)?(Elsevier Inc, 2025-11-01) Kohn TA; Martin M; van Boom KM; Donaldson B; Blackhurst DM; Fitte A; Burroughs R; Steyl JCA; Goddard A; Meyer LCRRhabdomyolyses is a clinical sign of capture myopathy in wild animals and may be linked to glycogen metabolism. To study potential mechanisms, 26 wild blesbok were chased for 15 min and immobilised, whereafter 12 of these blesbok were doused with ice-water (n = 14 chased only group; n = 12 chased + cooled group). An additional 12 blesbok served as resting (not chased) uncooled controls. Vastus lateralis biopsies were obtained after immobilisation for biochemical analyses. Biopsies obtained at initial capture, 3- and 16-days post exercise were analysed for glycogen content. Blesbok muscles contained predominantly myosin heavy chain (MHC) IIA (∼50 ± 9 %), followed by IIX (32 ± 10 %) and MHC I (18 ± 5 %), with no difference between groups. Citrate synthase (mean: 87 ± 48), 3-hydroxyacetyl co A dehydrogenase (47 ± 17), lactate dehydrogenase (1567 ± 654), phosphorylase (162 ± 94), phosphofructokinase (250 ± 123) and creatine kinase (12,455 ± 6372) activities (in μmol/min/g prot) were not different between groups. Similarly, superoxide dismutase (7.9 ± 7 U/mg prot), catalase (8.8 ± 5.8 mmol/min/g prot), and overall antioxidant capacity (ORAC: 23055 ± 18,460 μmol/g prot) were not different between groups. Glycogen content was reduced in both chased groups and not replenished by day 3. Glycogen supercompensation was observed on day 16 in both chased groups (∼33 % higher than resting control group). The results confirm that blesbok have high muscle metabolic capacities, and that glycogen resynthesis is slow, which could lead to metabolite deficiency during prolonged chase events (>15 min).Item Dataset describing Aotearoa New Zealand young adults’ psychological well-being and behaviour during nationwide lockdown(Elsevier B.V., 2022-02-01) Broodryk T; Robinson KThis dataset provides a comprehensive snapshot of 277 New Zealand young adult's (M age = 18.93, SD = 3.28) real-time behaviours and experiences during a seven-week nationwide lockdown. Participants were recruited through a university student participant pool and data were collected online during 20–27th April 2020 (Alert Level 4) and 6–13th May 2020 (Alert Level 3), constituting the 26th–33rd and 42nd–49th day (respectively) of a nationwide lockdown to manage the first wave of COVID-19 in Aotearoa New Zealand. Data have been used previously [1]. Data includes participants’ self-reported compliance with legally mandated COVID-19 lockdown policies, as well as participants’ self-reported knowledge of lockdown policies, lockdown characteristics, trust in government and information sources, COVID-19 specific worries, recent anxiety, depression, and stress symptoms, cognitive reappraisal and expressive suppression use, and Big Five personality traits. The dataset is freely accessible (CC-BY-4.0 license) at https://osf.io/pa4n3/. This database can provide insight into the psychological experience of strict COVID-19 lockdown, support policy makers to evaluate the efficiency COVID-19 public health messaging, and inform future policy to support public health and wellbeing during widespread lockdown and quarantine.Item Coping with stress during the COVID-19 pandemic in the oldest-old population(Springer Nature B.V., 2022-12) Gerhards SK; Pabst A; Röhr S; Luppa M; Riedel-Heller SGThe aim of the study is to investigate psychosocial factors that are associated with positive and negative coping with stress, as well as with worries about and perceived threat by COVID-19 to enable us to provide adequate support for oldest-old individuals. A paper–pencil-based survey assessed COVID-19 worries and perceived threat, depression, anxiety, somatization, social support, loneliness, resilience, positive and negative coping in a sample of n = 197 oldest-old individuals (78–100 years). Linear multivariate and binary logistic regression analyses were conducted. Individuals with high levels of resilience were more likely to feel self-efficient when coping with stress. High levels of depression, anxiety and loneliness were associated with feeling more helpless when coping with stress. However, oldest-old individuals who felt lonely also experienced situations where they felt competent in stress coping. Being male and experiencing high levels of social support was more likely associated with high levels of worries due to COVID-19. Increased age and higher levels of depression were associated with lower levels of perceived personal threat, whereas higher somatization scores were more likely associated with higher perceived personal threat. Findings suggest that mental health factors may shape the way oldest-old individuals cope with pandemic-related stress. Resilience might be an important factor to take into account when targeting an improvement in positive coping with stress. Oldest-old individuals who have higher levels of depression, anxiety and feel lonely may be supported by adapting their coping skill repertoire to reduce the feeling of helplessness when coping with stress.Item Comparative Endocrine Stress Responses in Vertebrates.(Frontiers Media SA., 24/09/2019) Tort, L; Narayan, E; Cockrem, JThe intention of this Research Topic is to join experts in endocrinology, anatomy, physiology, and zoology who can provide a contribution on the endocrine stress response of vertebrates or the regulatory responses of vertebrates to stressors, including neural, immune, metabolic or behavioral reactions related to endocrine responses. All vertebrates experience stress. Whilst the endocrine stress response has been well described, not many reviews provide a comparative approach that helps understanding the common bases of the stress response and the differences between groups. Such approach needs to be taken both in terms of comparative responses among vertebrates but also among classes or orders within groups of vertebrates. In addition, recently the endocrine stress response has been increasingly associated with other systemic responses such as immunity, growth, reproduction or behavior and coping strategies, which expands the knowledge on the interactions between physiological systems to build an overall stress response. A third aspect that has not been sufficiently approached so far is a comparative view of stress responses in relation to age. In this Research Topic, the focus will be on studies (including original research, perspectives, minireviews, commentaries and opinion papers) that discuss a comparative approach to the stress responses of vertebrates. The focus includes: -The comparative response of vertebrates to stressors, looking at several groups of vertebrates. -The comparative response of a class or order of a specific group of vertebrates. -The comparative response of a specific genera/species in relation to age, or regarding domestic vs. wild animals. -The array of systemic, molecular and gene responses to stressors that are linked to endocrine responses and that have a role in the overall response. -The comparative response to different types of stressor