| 1. |
- Essner, Ann, et al.
(författare)
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Validity and reliability properties of canine short-term heart rate variability measures-a pilot study
- 2015
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Ingår i: Journal of Veterinary Behavior. - : Elsevier BV. - 1558-7878 .- 1878-7517. ; 10:5, s. 384-390
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Tidskriftsartikel (refereegranskat)abstract
- The objective of the pilot study was to compare validity and reliability properties of Polar RS800CX (Polar Electro Oy, Kempele, Finland) against simultaneously recorded electrocardiogram (ECG) measuring time- and frequency-based short-term heart rate variability (HRV) parameters, in dogs during stationary standing position. Five-minute recordings with less than 5% error rates from inter-beat interval (IBI) series obtained by Polar RS800CX and ECG, in 8 adult dogs, were used for HRV analysis. Polar data were statistically compared to the ECG data to assess for systematic differences in time- and frequency-based HRV parameters. Relative and absolute reliabilities were estimated by intraclass correlation coefficient, Spearman ρ, Bland and Altman analysis, standard error of measurement, and standard error of measurements in percentage. Paired t test was used to determine the statistical significance of differences between the measurement methods. Results: There were high correlation coefficients between HRV parameters obtained from Polar RS800CX and ECG. Intraclass correlation coefficients were 0.98-1.00, and Spearman ρ was 0.93-0.98. There were differences between the methods in 2 HRV parameters, the standard deviation of normal-to-normal IBIs (SDNN) (P = 0.035) and the square root of the mean squared differences of successive normal-to normal IBIs (RMSSD) (P = 0.034). Standard error of measurements was between 2.8-11.6% in ECG and between 2.6-11.8% in Polar, indicating rather high measurement error in 3 of the HRV parameters in both measurement methods. Close agreements and high correlation estimates in this pilot study indicated acceptable relative reliability in Polar RS800CX measuring time- and frequency-based HRV parameters in the group of dogs studied. However, the present pilot study revealed differences between Polar RS800CX and ECG in time-based standard deviation of normal-to-normal and square root of the mean squared differences of successive normal-to normal parameters, and that small amounts of erroneous IBI segments from Polar negatively impact on the validity and reliability properties of Polar RS800CX. © 2015 Elsevier Inc.
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| 2. |
- Essner, Ann, et al.
(författare)
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Validity and reliability of Polar® RS800CX heart rate monitor, measuring heart rate in dogs during standing position and at trot on a treadmill
- 2013
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Ingår i: Physiology and Behavior. - : Elsevier BV. - 0031-9384 .- 1873-507X. ; 114-115, s. 1-5
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to assess criterion validity, and relative and absolute reliability of Polar® RS800CX heart rate monitor, compared to simultaneously recorded electrocardiogram (ECG) data, in measuring heart rate of dogs during standing position and at trot on a treadmill.MethodsHeart beats from Polar® RS800CX and Cardiostore ECG were recorded simultaneously during seven continuous minutes in standing position and at trot, in 10 adult healthy dogs. Polar® data was statistically compared to ECG data for a variety of mean beats per minute (BPM), standard deviation and confidence interval. Criterion validity was calculated by Pearson product moment correlation method and intraclass correlation coefficient (ICC2.1). Relative and absolute reliability were calculated by ICC2.1, the Bland and Altman analysis and standard error of measurement (SEM and SEM%).ResultsThe correlation, criterion validity, between Polar® and ECG data in standing position was r = 0.99 (p < 0.0005) and at trot r = 0.97 (p < 0.0005). Polar® data was not significantly different from ECG data. Mean difference between ECG and uncorrected Polar® data was − 0.6 BPM in standing position and − 0.6 BPM at trot. Polar® was over- and underestimating ECG data. SEM and SEM% in standing were ± 2.6 BPM and 3.0%, at trot ± 3.8 BPM and 3.1%, indicating that measurement errors were low.ConclusionThis study showed that the criterion validity and the instrument reliability were excellent in Polar® RS800CX heart rate measuring system. The equipment seemed to be valid and reliable in measuring BPM in the dogs studied during submaximal cardiovascular conditions such as in standing position and at trot on a treadmill.
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| 3. |
- Andersson, Erik, et al.
(författare)
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Ambio fit for the 2020s
- 2022
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Ingår i: Ambio. - : Springer Nature. - 0044-7447 .- 1654-7209. ; 51:5, s. 1091-1093
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Tidskriftsartikel (refereegranskat)
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| 4. |
- Fagerlund, Amelie, et al.
(författare)
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Radical-scavenging and antioxidant activity of avenanthramides
- 2009
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Ingår i: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 113:2, s. 550-556
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Tidskriftsartikel (refereegranskat)abstract
- Avenanthramides are amides of cinnamoyl-anthranilic acids and, among cereals, are exclusively found in oats. This study investigated the structure-antioxidant activities of 15 avenanthramides with different substitution patterns in the two aromatic rings, seven of which were new avenanthramides synthesised and characterised in this study. Radical-scavenging activity was tested as reactivity towards 1,1-diphenyl-2-picrylhydrazyl (DPPH-). The activity increased with the number of radical-stabilising groups ortho to the phenolic hydroxy group. Both aromatic rings were independently important for activity, while conjugation across the amide bond was of minor importance. Antioxidant activity was determined as inhibition of linoleic acid oxidation. In contrast to the radical-scavenging activity, antioxidant activity was observed for most avenanthramides, and also for compounds with only one hydroxy group in either of the aromatic rings. Compared with alpha-tocopherol, the avenanthramides protected linoleic acid from oxidation to a smaller extent initially, but the effect lasted for a longer time.
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| 5. |
- Johansson, Maria, et al.
(författare)
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Appraisals of Wildlife During Restorative Opportunities in Local Natural Settings
- 2021
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Ingår i: Frontiers in Environmental Science. - : Frontiers Media SA. - 2296-665X. ; 9
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Tidskriftsartikel (refereegranskat)abstract
- Many call for a broad approach to valuation of nature’s contribution to people, one that provides a contextualized understanding of what may be experienced as a value in different cultures, groups and settings. In the present paper we address contributions of nature to psychological well-being as realized through restorative processes during encounters with wildlife. Although restorative benefits of nature experience have received much consideration, sparse attention has been given to the role of the presence or absence of different animals in the settings investigated. The presence of a liked species may increase appreciation for and engagement with a natural setting, but fear of encountering some species may counter the desire to visit a setting with otherwise high restorative quality. This paper proposes a psychological framework for understanding how wildlife may contribute to or hinder people’s opportunities to restore in local natural settings. The framework addresses the transaction between the individual and their surroundings, making use of an appraisal theory of emotion and theories about the restorative benefits of nature experience. We focus upon encounters in landscapes shared by humans and wildlife, and we elaborate on our reasoning with scenarios from Sweden involving local people’s appraisal of wolves and roe deer. An integrated understanding of the psychological processes at work would facilitate communication and decision-making about the contribution of wildlife in nature conservation and management.
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| 6. |
- Johansson, Maria, et al.
(författare)
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Wildlife and public perceptions of opportunities for psychological restoration in local natural settings
- 2024
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Ingår i: People and Nature. - : Wiley. - 2575-8314. ; 6:2, s. 800-817
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Tidskriftsartikel (refereegranskat)abstract
- Wildlife might be important to psychologically restorative values and disvalues of nature, as interactions with wildlife could trigger both positive and negative feelings. Research on positive experiences of human-wildlife interactions has largely involved participants who voluntarily sought out wildlife experiences or it has addressed encounters with non-threatening animals in urban green spaces. Less is known about the opportunities for psychological restoration in landscapes shared with mammals that are perceived to pose a threat to human activities and health. This study provides a nuanced understanding of the role of wildlife in public perceptions of the restorative potential and experience of psychological restoration in local natural settings. Twenty-eight participants (15 women, 13 men, 18-75 years) took part in focus group interviews subject to a reflexive thematic analysis. As an analytical framework, we used a theoretical model for how people appraise the relevance, implications, coping potential and norm congruence of human-wildlife interactions and how such appraisals may support or hinder the restoration experienced in local natural settings. Relevance appraisals revealed shifts in consideration of the presence of wildlife from an integrated part of the natural scenery (background) to a distinct figure (foreground). Implication appraisals revealed that wildlife encounters would hinder the experienced psychological restoration if the animal was appraised as dangerous, disgusting, causing a nuisance or destructive. Wildlife encounters would promote restoration if the animal displayed attractive traits, features or fascinating behaviour or movements, and if it opened engaging interaction situations. Coping strategies perceived as feasible to deal with negative implications of wildlife involved avoidance of the local natural setting, preparatory behaviour displayed before a visit and precautionary behaviour displayed during the visit. Important public health effects might be gained if wildlife policy and management explicitly consider what animals mean to the perceived restorative potential of local natural settings.Read the free Plain Language Summary for this article on the Journal blog. Forekomst av vilt levande djur kan ha betydelse for manniskors mojlighet till mental aterhamtning i naturen eftersom djurlivet kan ge upphov till bade positiva och negativa kanslor. Tidigare forskning om positiva upplevelser av vilt har foretradesvis handlat om situationer dar manniskor medvetet har sokt sig till en plats for att se djur, fokuserat djurarter som vanligtvis inte betraktas som farliga for manniskor, eller varit begransade till smavilt i urbana gronomraden. Daremot saknas kunskap om mojligheter till mental aterhamtning i naturomraden med storre daggdjur som ocksa kan upplevas utgora ett hot mot manniskors aktiviteter och halsa. Den har studien bidrar till en nyanserad forstaelse av viltets betydelse for allmanhetens upplevda mojligheter till mental aterhamtning i lokala naturomraden. Vi intervjuade 28 deltagare (15 kvinnor, 13 man, 18-75 ar) i fokusgrupper. Intervjuerna analyserades med sk reflexiv tematisk analys. I analyserna utgick vi ifran en teoretisk modell for manniskors bedomning av relevans och konsekvenser av interaktioner mellan manniska och vilt samt tillgang till strategier for att hantera sadana interaktioner och samstammighet med normer i dessa situationer. Modellen beskriver ocksa hur bedomningar kan stodja eller hindra upplevelsen av mental aterhamtning. Deltagarnas bedomning av viltets relevans for mental aterhamtning varierade avseende om djuren betraktades som en integrerad eller en unik framtradande del av naturlandskapet. Bedomningen av konsekvenser visade att moten med vilt levande djur upplevdes hindra den mentala aterhamtningen om djuret ansags vara farligt eller ackligt, orsaka olagenhet eller forstora for manniskor. Moten med vilt upplevdes stodja aterhamtning om djuret ansags ha ett attraktivt utseende eller positiva egenskaper, fascinerande beteenden eller rorelsemonster, eller om djuret skapade sarskilt engagerande situationer. De strategier som deltagarna bedomde som mojliga och tillgangliga for att hantera negativa konsekvenser av vilt var undvikande av lokala naturomraden, forberedelser som vidtogs innan ett eventuellt besok i naturomradet och forsiktighetsatgarder under tiden deltagarna vistades i naturomradet. Det kan finnas positiva effekter for folkhalsan om viltpolicy och forvaltning explicit beaktar betydelsen av vilt for manniskors upplevda mojlighet till mental aterhamtning i lokala naturomraden. Read the free Plain Language Summary for this article on the Journal blog.
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| 7. |
- Johansson, Maria, et al.
(författare)
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Wildlife and the restorative potential of natural settings
- 2024
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Ingår i: Journal of Environmental Psychology. - : Elsevier BV. - 0272-4944 .- 1522-9610. ; 94
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Tidskriftsartikel (refereegranskat)abstract
- How does the likelihood of encountering wildlife affect residents’ expectations about psychological restoration when visiting a local natural setting, and their choices among settings for future recreation? Do urban and rural residents differ in such expectations and choices? We addressed these questions in a web-based experiment with 223 adult residents randomly sampled from urban and rural areas in each of three regions in Sweden. Residents in all six areas can encounter fear-irrelevant wildlife (roe deer, squirrel) near the home, but the presence of fear-relevant wildlife (wolf, wild boar) differs across the areas. The respondents read scenarios concerning encounters with each of these four animals during recreational visits to a nearby natural setting. The scenarios varied in how frequently the person could expect to encounter each animal across visits (never, sometimes, often). For all 12 scenarios, respondents answered questions about anticipated experiences and restoration outcomes, and the effect of encounter likelihood on future recreational setting choices. Across all areas, with all outcomes, increased likelihood of encounters with the wolves and wild boar detracted from anticipated restorative potential, whereas increased likelihood of encounters with roe deer and squirrel enhanced anticipated restorative potential. A similar pattern showed in recreational setting choices. A domination wildlife value orientation moderated the effects of encounter likelihood for wolf and wild boar, whereas a mutualistic orientation moderated the effects of encounter likelihood for squirrel and roe deer. Our results suggest that wildlife management and public health practice could work together not only to address the fears of residents, but also to enhance the restorative quality of local natural settings by protecting wildlife.
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| 8. |
- Lee-Manion, M., et al.
(författare)
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In Vitro Antioxidant Activity and Antigenotoxic Effects of Avenanthramides and Related Compounds
- 2009
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Ingår i: Journal of Agricultural and Food Chemistry. - : American Chemical Society (ACS). - 0021-8561 .- 1520-5118. ; 57:22, s. 10619-10624
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Tidskriftsartikel (refereegranskat)abstract
- Avenanthramides are substituted N-cinnamoylanthranilic acids, with hydroxycinnamic acid and anthranilic acid moieties. These alkaloid phenols, which are unique to oats, may confer health benefits via antioxidant or other mechanisms. Synthetic avenanthramides, hydroxycinnamic acids, Tranilast, and ascorbic acid were evaluated for antioxidant activity using two assays, DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP (ferric reducing antioxidant potential), and for antigenotoxicity using the Comet assay with stressed human adenocarcinoma colon cells. Of all the compounds tested, N-(3',4'-dihydroxy-(E)-cinnamoyl)-5-hydroxyanthranilic acid (2c), an abundant oat avenanthramide, generally had the highest activity in all three assays. The drug Tranilast showed antigenotoxic effects, but not antioxidant activity, suggesting that antigenotoxicity is not dependent on antioxidant effects. Overall, results show that avenanthramides exert antioxidant and antigenotoxic activities that are comparable to those of ascorbic acid and which have the potential to exert beneficial physiological effects.
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| 9. |
- Lundström, Markus, 1980-
(författare)
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“We do this because the market demands it” : alternative meat production and the speciesist logic
- 2019
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Ingår i: Agriculture and Human Values. - : Springer Science and Business Media LLC. - 0889-048X .- 1572-8366. ; 36:1, s. 127-136
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Tidskriftsartikel (refereegranskat)abstract
- The past decades’ substantial growth in globalized meat consumption continues to shape the international political economy of food and agriculture. This political economy of meat composes a site of contention; in Brazil, where livestock production is particularly thriving, large agri-food corporations are being challenged by alternative food networks. This article analyzes experiential and experimental accounts of such an actor—a collectivized pork cooperative tied to Brazil’s Landless Movement—which seeks to navigate the political economy of meat. The ethnographic case study documents these livestock farmers’ ambiguity towards complying with the capitalist commodification process, required by the intensifying meat market. Moreover, undertaking an intersectional approach, the article theorizes how animal-into-food commodification in turn depends on the speciesist logic, a normative human/non-human divide that endorses the meat commodity. Hence the article demonstrates how alternative food networks at once navigate confines of capitalist commodification and the speciesist logic that impels the political economy of meat.
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| 10. |
- Rydin, E., et al.
(författare)
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Compensatory nutrient enrichment in an oligotrophic mountain reservoir : effects and fate of added nutrients
- 2008
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Ingår i: Aquatic Sciences. - : Springer Science and Business Media LLC. - 1015-1621 .- 1420-9055. ; 70:3, s. 323-336
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Tidskriftsartikel (refereegranskat)abstract
- Most Scandinavian rivers are impounded for power production. High altitude reservoirs retain water during summer and fall for power production during winter and spring. The oligotrophic lakes Mjölkvattnet and Burvattnet were impounded in 1942. Annual water level fluctuations caused by regulation have resulted in a loss of littoral habitat, and Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta) populations have declined. To assess compensatory nutrient enrichment as a remedy against declining fish populations, we added dissolved phosphate and nitrate to Mjölkvattnet in June and July in 2002 and 2003, and used the upstream lake Burvattnet as a reference system. Nutrient addition doubled water column total phosphorus concentration, from 3 to 6 μg P/L and increased nitrogen concentration by about 20 μg/L. Half of the added phosphorus settled out as organic matter, and about one third was lost downstream. Phytoplankton production and biomass increased, but species composition remained principally unchanged. Rotifers and cladocerans responded rapidly, as did the condition of fish. After two years of nutrient addition, five year old Arctic char had doubled in weight and increased significantly in length, reaching pre-impoundment conditions.
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