Translation and validation of an extended German-language version of the Perceived Locus of Causality Questionnaire (PLOCQ-G) in a sample of physical education students

The aims of this study were to translate and validate an extended German-language version of the Perceived Locus of Causality Questionnaire (PLOCQ), a questionnaire that assesses behavioural regulations in the physical education (PE) context. Items assessing integrated regulation were added given that the original PLOCQ omits this factor. The sample consisted of 223 students from different German secondary schools. Psychometric analyses provided support for the six factors and 24-item model. Inter-correlations among the factors predominantly mirrored a simplex-like structure, except for the correlations between introjected and identified regulation and integrated regulation and its adjacent forms of regulation. Construct validity was demonstrated with positive correlations between the autonomous forms of regulation on the one hand and task orientation, perceived competence, and enjoyment on the other. Overall, this study showed that the PLOCQ‑G with six factors and 24 items has good psychometric properties and can be used to assess behavioural regulations in German PE students.

Motivation for Physical Activity in Adults with Multiple Sclerosis: A Self-determination Theory–Based Approach

Background: Despite the benefits of regular physical activity (PA), most adults with multiple sclerosis (MS) are insufficiently active. Identifying the motivational correlates of PA is necessary to facilitate health behavior change. The extent to which the constructs of psychological need satisfaction and motivational regulations associate with self-determined PA in adults with the disease was examined. Methods: Individuals with MS were provided a link to a web-based survey. There were 290 respondents: 242 women and 48 men aged 22 to 71 (mean ± SD, 49.50 ± 12.05) years with primarily mild-to-moderate mobility impairment who completed the Psychological Need Satisfaction in Exercise scale, the Behavioral Regulation in Exercise Questionnaire, and the International Physical Activity Questionnaire. Results: Path analysis revealed that PA was best predicted by integrated regulation, competence, and mobility, explaining 28% of the variance in PA behavior. All three need satisfaction variables (relatedness, competence, and autonomy) and mobility impairment accounted for 43% of the variance in integrated regulation. Conclusions: Increasing satisfaction of the need for relatedness, competence, and autonomy can lead to more integrated and internally motivated PA engagement in adults with MS.

Integrated Regulation of PKA by Fast and Slow Neurotransmission in the Nucleus Accumbens Controls Plasticity and Stress Responses

Cortical glutamate and midbrain dopamine neurotransmission converge to mediate striatum-dependent behaviors, while maladaptations in striatal circuitry contribute to mental disorders. Here we uncover a molecular mechanism by which glutamatergic and dopaminergic signaling integrate to regulate cAMP-dependent protein kinase (PKA) via phosphorylation of the PKA regulatory subunit, RIIβ. We find that glutamate-dependent reduction in Cdk5-dependent RIIβ phosphorylation alters the PKA holoenzyme auto-inhibitory state to increase PKA signaling in response to dopamine. Disruption of RIIβ phosphorylation by Cdk5, consequently, enhances cortico-ventral striatal synaptic plasticity. Acute and chronic stress in rats inversely modulates RIIβ phosphorylation and ventral striatal infusion of a small interfering peptide that selectively targets RIIβ regulation by Cdk5 improves behavioral response to stress. This new signaling mechanism integrating ventral striatal glutamate and dopamine neurotransmission is likely important to brain function, may contribute to neuropsychiatric conditions, and serves as a possible target for the development of novel therapeutics for stress-related disorders.

Formalized model and algorithm for managing complex interaction of heterogeneous transport

The problem of ensuring the reliability of heterogeneous transport systems is extremely multifaceted and covers all stages of development - from design to operation. To increase efficiency, there is a need to harmonize the processes taking place in heterogeneous systems within the framework of single transport communication. The lack of appropriate theoretical justification leads in practice to the emergence of insufficiently substantiated decisions, because of which subsequent efforts made to eliminate the discovered shortcomings are, as a rule, costly and ineffective. Assessment of the system of integrated regulation of the transport system, from the point of view of its sustainability, is an indispensable condition for its operational efficiency and reliability. The efficiency of transport processes assumes that the effective functioning of local transport systems is ensured by the level of interaction between participants in the transport process, modes of transport that create positive dynamics of transit freight turnover. The paper substantiates the need for complex interaction in the management of the regional transport system, considering the interaction of adjacent modes of transport in a single information space. The method describes in detail the solution of forecasting and coordination problems in maritime transport systems, harmonization of the interests of heterogeneous transport in solving forecasting and control problems.

Sport Motivation of Paralympic Athletes after Injury

Motivation for performing sport is complex because most athletes have multiple motivations, including extrinsic and intrinsic motivation. Understanding the motivation dynamics of athletes, especially after a sports injury, is crucial because the injury may have a detrimental effect on the athlete's psychosocial conditions. This study figured out the motivation level of Paralympic athletics athletes after injury. A total of 44 Paralympic athletes were involved in the survey. The Sports Motivation Scale (SMS) was used to identify the level of athlete motivation. The SMS was developed within the Self Determination Theory (SDT) framework to assess various forms of motivation, namely amotivation, external regulation, introjected regulation, identified regulation, integrated regulation, and intrinsic motivation. This study found that out of 44 Paralympic athletics athletes after an injury, 5 (4.55%) of the athletes reported high levels of amotivation, and 15 (34.09%) of the athletes were identified in the moderate level of amotivation. This finding indicates that injury does not impact amotivation, as the athletes exhibit a high level of extrinsic motivation (external regulation, introjected regulation, identified regulation, integrated regulation) and intrinsic motivation. Based on these motivation profiles, the Paralympic coaches should adjust their approach in motivating the Paralympic athletes to return to their training and competitions after injury.

Acceptability of Narrative Visualization with Physical Activity Monitoring Among Breast Cancer Survivors

Purpose: Physical activity (PA) levels are low among breast cancer survivors. Narrative visualization (NV) is a technique that uses drawings, photographs, and text to contextualize data, which may increase integrated regulation, or motivation for PA by relating it to personal values and identity. The purpose of this study was to determine the acceptability of a NV intervention for older breast cancer survivors.Methods: Participants completed an NV workbook for 7 days using the provided instant camera, art supplies including a variety of stickers, and a wearable electronic activity monitor. The workbook pages prompted participants to re-draw their daily activity graphs from the monitor’s mobile app, then annotate them with text, photographs, stickers, etc. to reflect what the data meant to them. Thematic analysis and content analysis were used to identify emergent themes. Results: Of the 20 consented women (mean age 67±5 years, 45% non-Hispanic White), 17 participants completed all study procedures. Participants showed high levels of engagement (e.g., mean of 9 photos taken; mean of 56 stickers used over 7 days; all workbook questions completed) supporting intervention acceptability. Themes within the photos included family, specific locations, everyday objects, religion, and friends. Themes within the written portions of the workbook included family, chores and obligations, health, personal reflection, hobbies, and shopping. Weight loss was not a major theme. Conclusions: Breast cancer survivors successfully used NV techniques to reflect on their PA data and behavior. These techniques show promise for promoting integrated regulation in activity monitoring interventions.Trial Registration: NCT03612596