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Validity of Calculating Continuous Relative Phase during Cycling from Measures Taken with Skin-Mounted Electro-Goniometers
Get PDFThe aim of this study was to assess the validity of electro-goniometers as a tool for recording continuous relative phase data at two joint couplings during cycling tasks at a range of cadences. Seven participants (4 male, 3 female, age: 29 ± 7 years, height: 1.76 ± 0.10 m, mass: 71.97 ± 11.57 kg) performed exercise bouts of 30 s at four prescribed cadences (60, 80, 100, 120 rev·min ) on a stationary ergometer (Wattbike, Nottingham, UK). Measures were synchronously recorded by bi-axial electro-goniometers (Biometrics, UK) and a 12-camera motion-capture system (Qualisys, Gothenburg, Sweden), with both systems sampling at 500 Hz. Sagittal plane joint angle and joint angular velocity were recorded at the hip, knee and ankle and analysed for ten complete pedal revolutions per participant per condition. Data were interpolated to 100 time points and used to calculate mean continuous relative phase (CRP) per pedal revolution at two intra-limb couplings: (i) knee flexion/extension-ankle plantarflexion/dorsiflexion (KA) and (ii) hip flexion/extension-knee flexion/extension (HK). At the KA coupling, significant differences in mean CRP were found between measurement systems at 120 rev·min ( = 0.006). At the HK coupling, significant differences in mean CRP were found between measurement systems at 80 rev·min ( = 0.043) and 100 rev·min ( = 0.028). ICC values for most comparisons were below 0.5, suggesting poor levels of agreement between systems. Significant differences in mean CRP per pedal revolution and poor levels of agreement between systems suggests that electro-goniometers are not a suitable alternative to motion-capture systems when attempting to record CRP during cycling
A Context-Based Decision-Making Trust Scheme for Malicious Detection in Connected and Autonomous Vehicles
No full textThe fast-evolving Intelligent Transportation Systems (ITS) are crucial in the 21st century, promising answers to congestion and accidents that bother people worldwide. ITS applications such as Connected and Autonomous Vehicle (CAVs) update and broadcasts road incident event messages, and this requires significant data to be transmitted between vehicles for a decision to be made in real-time. However, broadcasting trusted incident messages such as accident alerts between vehicles pose a challenge for CAVs. Most of the existing-trust solutions are based on the vehicle's direct interaction base reputation and the psychological approaches to evaluate the trustworthiness of the received messages. This paper provides a scheme for improving trust in the received incident alert messages for real-time decision-making to detect malicious alerts between CAVs using direct and indirect interactions. This paper applies artificial intelligence and statistical data classification for decision-making on the received messages. The model is trained based on the US Department of Technology Safety Pilot Deployment Model (SPMD). An Autonomous Decision-making Trust Scheme (ADmTS) that incorporates a machine learning algorithm and a local trust manager for decision-making has been developed. The experiment showed that the trained model could make correct predictions such as 98% and 0.55% standard deviation accuracy in predicting false alerts on the 25% malicious data
Ovarian cancer and KiSS-1 gene expression: A consideration of the use of Kisspeptin plus Kisspeptin aptamers in diagnostics and therapy
Get PDFGynaecological cancers continue to present a significant health burden upon the health of the global female population. This deficit is most prominent with ovarian cancer which possesses the lowest survival rate compared to all other cancers occurring within this anatomical region, with an annual UK-mortality of 7,300. The poor tolerability and selectively of the treatment options that are currently available is likely to have contributed to this high mortality rate thus, demonstrating the need for the development of enhanced therapeutic approaches. Aptamer technology would involve the engineering of specifically sequenced oligonucleotide chains, which bind to macromolecular targets with a high degree of affinity and selectively. Recent in-vitro studies conducted upon the clinical utility of this technique have supported its superiority in targeting individual therapeutic drug targets compared to various other targeting moieties currently within therapeutic use such as, monoclonal antibodies. For this reason, the employment of this technique is likely to be favourable in reducing the incidence of non-specific, chemotherapy-associated adverse effects. Kisspeptin is a naturally expressed polypeptide with an established role in the development of the reproductive system and other proposed roles in influencing the ability of ovarian cancer growths to exhibit the metastasis hallmark. This distinctive feature would indicate the potential for the manipulation of this pathway through the application of aptamer structures in developing a novel prophylactic strategy and improve the long-term outcome for ovarian cancer patients
“You belong in the kitchen”: Social media, virtual manhood acts, and women strength sport athletes’ experiences of gender-based violence online
Get PDFThe virtual world has transformed sport and leisure spaces, including how we communicate and interact with others globally. Despite the positives of social media, it is also a space which may facilitate hate, abuse, discrimination, and gender-based violence. In this study, women strength sport athletes’ experiences and perceptions of gender-based violence through the enactment of Virtual Manhood Acts (VMAs) are explored, using interviews with thirteen competitive women athletes. Findings reveal that VMAs are used to regulate gender norms and ideologies, promote misogyny, and endorse a hierarchical gender order. In addition, women experience appearance-related commentary and gender questioning, which arguably reduces their worth to their appearance, with expectations of conformity to the “male gaze.” Finally, VMAs are targeted towards women through accusations of steroid use and through criticism of form and technique, reinforcing strength sports as a male-domain and marginalising women’s achievements. While previous research has analysed the existence of VMAs online, in this study the importance of considering women’s perceptions of VMAs, and the wider impact they can have, is further considered
Effects of New Zealand Blackcurrant Extract on Sequential Performance Testing in Male Rugby Union Players
Get PDFPrevious studies on performance effects by New Zealand blackcurrant (NZBC) extract used mainly a single exercise task. We examined the effects of NZBC extract in a battery of rugby un-ion–specific tests including speed, agility and strength testing. University male rugby union players (n = 13, age: 21 ± 2 years, height: 182 ± 6 cm, body mass: 87 ± 13 kg) completed two full familiarisations and two experimental visits in an indoor facility. The study had a double blind, placebo-controlled, randomised, crossover design. For the experimental visits, participants con-sumed NZBC extract (210 mg/day of anthocyanins for 7 days) or placebo with a 7-day wash-out. Testing order was the running-based anaerobic sprint test, the Illinois agility test, seated medi-cine ball (3 kg) throw, and handgrip strength. With NZBC extract, there may have been an effect for average sprint time to be faster by 1.7% (placebo: 5.947 ± 0.538 s, NZBC extract: 5.846 ± 0.571 s, d = −0.18 (trivial), p = 0.06). However, with NZBC extract there may have been reduced slowing of sprint 2 (d = −0.59 (moderate), p = 0.06) and reduced slowing for sprint 6 (d = −0.56 (moderate), p = 0.03). In the Illinois agility test, there may have also been an effect for the mean time to be faster by 1.6% (placebo: 18.46 ± 1.44 s, NZBC extract: 18.15 ± 1.22 s, d = −0.24 (small), p = 0.07). The correlation between the %change in average sprint time and %change in mean agility time was not significant (Pearson R2 = 0.0698, p = 0.383). There were no differences for the seated medicine ball throw distance (p = 0.106) and handgrip strength (p = 0.709). Intake of NZBC extract in rugby union players seems to improve tasks that require maximal speed and agility but not muscle strength. NZBC blackcurrant extract may be able to enhance exercise performance in team sports that require repeated movements with high intensity and horizontal change of body position without affecting muscle strength
An experimental test of integrating imagery with approach bias modification for alcohol: A cautionary tale
No full textIn terms of dual process models, behaviour can be conceived of as the outcome of an interplay between reflective, top-down and impulsive, bottom-up processes. Behaviour change interventions may benefit from targeting both types of processes in a coherent way. One approach to this, in the context of reducing hazardous drinking, is to combine imagery involving real-life situations involving alcohol with the simple actions involved in Approach Bias Modification (ApBM), a form of Cognitive Bias Modification. We developed and tested a version of this Imagery-enhanced Approach Bias Modification (IApBM) in an experimental design, with two independent factors: imagery versus control and ApBM versus control training components (N = 139). An effect of integrating the training factors was hypothesized on the alcohol-approach bias of an alcohol Approach-Avoidance Task. Further exploratory analyses were performed for the bias on alcohol-related Single Attribute Implicit Association Tests and on alcohol-related questionnaires. Finally, the psychometric properties of an imagery interference effect during training were explored. Results showed no benefit of the training and in fact suggested a negative interaction in which combining the training components appeared to block reductions in craving effected by each in isolation. The reliability of the imagery-related interference effect was high and the effect was correlated with alcohol-related scales. In conclusion, it appears that interference between training components decreases their individual effects when combining imagery and ApBM in the current way. The imagery-related interference effects that could be measured during training conditions may be useful as an implicit measure of automatic processes underlying hazardous drinking. [Abstract copyright: © 2022 British Psychological Society.
Secondary analysis of qualitative data: Hungarian minority kindergarten pedagogues’ perspectives of the new Curriculum Framework in Serbia
Get PDFSecondary analysis is employed to address new research questions by analysing previously collected data. This paper reports on the secondary analysis of qualitative data where the original research investigated the preschool education reform in Serbia from the perspective of Hungarian ethnic minority kindergarten pedagogues. The choice to apply a secondary analysis fulfilled the aims of (i) investigating traces of socialism in Early Childhood Education and Care (ECEC) provision in Vojvodina, a northern region of Serbia; and (ii) exploring the complexity of Christmas celebrations in nurseries. In order to address the aims, a secondary analysis of 12 semi-structured transcripts was carried out. This analysis revealed important additional findings for the original study. In light of the education reforms in Serbia we found that, first, there are strong connections between the ‘socialist past’ ECEC practices and what these practices may look like in the future; and, second, the traditional celebration of religious holidays outside of church organizations, such as Christmas, may change in the nurseries. This paper also offers insight regarding the importance of secondary analysis which provides an opportunity to making use of existing resources
Traversing Terrain and Staying Put: Performing Endurance
Get PDFThis chapter presents a discursive dialogue between the performative nature of endurance events, and artistic modes of site-based performance that employ endurance methods and formats. It explores endurance feats (such as long distance running and fundraising challenges) as events framed and transmitted through performance tropes, and considers how embodied acts of endurance are employed in site-based performance events witnessed by others. Reflecting on contemporary events, the chapter explores body-site relations enacted in this work and considers what happens, and where this work might go or retreat to, in the time of a pandemic, leading to a discussion of feats of endurance and performance acts in domestic spaces created and performed during lockdown
Beyond listening: the value of co-research in the co-construction of narratives
Get PDFIn this article, we discuss how co-research – two researchers working together at each stage of the research process – can be used to analyse narratives created from qualitative interviews (drawing on Brown and Gilligan’s Listening Guide). We argue that co-research affords a richness and depth of analysis and propagates multiple, layered interpretations through a process of co-reflection. To illustrate our approach, we present an analysis of two case studies from the ‘From Adversity to University’ project, a longitudinal qualitative study evaluating the effectiveness of a bridging module as a way into higher education for students who have been affected by homelessness in England. We co-reflect on how our participants, our relationship with our participants and our relationship with each other as researchers has changed over time. We conclude that a co-researcher approach to analysing narratives is textually and emotionally enriching, as the co-constructed multiple interpretations transform not just the analysis of the text but also the relationship between researchers and their participants in new and unexpected ways
Construction and communication of evidence-based video narratives in elite sport: Knowledge translation of sports injury experiences
Get PDFA knowledge-transfer ‘gap’ exists within the sport injury psychology literature. This gap has led to recent calls to translate the evidence base in more accessible, relevant, and multi-sensory formats to facilitate research uptake and impact. Heeding this recommendation and informed by narrative inquiry, the purpose of this multi-study paper was twofold: Study 1 aimed to construct videos that translated evidenced-based narratives of sports injury experiences by working collaboratively with a digital learning practitioner, videographer, and user-group (i.e., elite athletes). Study 2 explored end-users’ perspectives of these video narratives in communicating sports injury research by conducting 11 focus group interviews with 69 participants (i.e., athletes, coaches, and practitioners). A reflexive thematic analysis identified that the video narratives communicated sport injury psychology research in accessible, evocative, and relevant ways. Considerations of how to implement these video narratives into professional practice are critically discussed