Pandemics and subsequent lifestyle restrictions such as ‘lockdowns’ may have unintended consequences, including alterations in body weight. This systematic review assesses the impact of pandemic confinement on body weight and identifies contributory factors. A comprehensive literature search was performed in seven electronic databases and in gray sources from their inception until July 1st 2020 with an update in PubMed and Scopus on February 1st 2021. In total, 2,361 unique records were retrieved, of which 41 studies were identified eligible: 1 case control study, 14 cohort and 26 cross-sectional studies (469, 362 total participants). The participants ranged in age from 6–86 years. The proportion of female participants ranged from 37% to 100%. Pandemic confinements were associated with weight gain in 7.2%–72.4% of participants and weight loss in 11.1%–32.0% of participants. Weight gain ranged from 0.6 (±1.3) to 3.0 (±2.4) kg, and weight loss ranged from 2.0 (±1.4) to 2.9 (±1.5) kg. Weight gain occurred predominantly in participants who were already overweight or obese. Associated factors included increased consumption of unhealthy food with changes in physical activity and altered sleep patterns. Weight loss during the pandemic was observed in individuals with previous low weight, and those who ate less and were more physically active before lock down. Maintaining a stable weight was more difficult in populations with reduced income, particularly in individuals with lower educational attainment. The findings of this systematic review highlight the short-term effects of pandemic confinements.

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The artiodactyl brain has multiple levels of vascular pooling and the rostral epidural rete mirabile (RERM) at its base. The current study is the first of its kind to precisely demonstrate the arterial vasculature of the dromedary brain, utilizing a new casting method with colored latex and epoxy paint. In total, 35 freshly slaughtered dromedary heads were injected with colored latex or colored epoxy paint prior to dissection in order to reveal cerebral vasculature; Ten processed heads were chemically digested with 5% potassium hydroxide to obtain hard casts of cerebral arteries and anastomosing structures. The outcomes of this study ascertain the distinct vascular features of dromedaries that set them apart from other artiodactyls. In addition to the RERM, the dromedary possesses a well-developed ophthalmic and chiasmatic rete. The dromedary is similar to giraffe, goat, cat and pig in the contribution of middle meningeal artery to the rete mirabile; however, dromedaries have several arteries emerging directly from the cerebral arterial circle that supply the choroid plexus and pineal gland. Additionally, dromedaries exhibit a dominant basilar system that dominates the blood supply to the medulla oblongata, pons, and cerebellum. In our study, we were able to graphically prove the lack of connection between the areas supplied by vertebrobasilar system and carotid system in the dromedary. Furthermore, the vertebral artery does not branch into the basilar artery; instead, it acts as a contributing vessel to the ventral spinal artery that later fuse to form the basilar artery. This study employed the new casting method to illustrate a new arterial source to RERM and the various anastomoses among arterial sources supplying the brain in the dromedary. These anastomoses play an important role in maintaining an uninterrupted cerebral blood supply, decreasing the vulnerability of the fragile brain against ischemia and stroke, as well as, play an important role in maintaining blood pressure and flow in long-necked dromedaries when they raise or lower their heads.

Pandemics and subsequent lifestyle restrictions such as lockdowns may have unintended consequences including alterations in body weight. Understanding the impact and the mechanisms affecting body weight is paramount for planning effective public health measures for both now and future lockdown-type situations. This systematic review assesses and the impact of pandemic confinement on body weight and to identifies contributory factors. A comprehensive literature search was performed in seven electronic databases and in gray sources from their inception until 1st July 2020 with an update in PubMed and Scopus on 1st February 2021. In total, 2,361 unique records were retrieved, of which 41 studies were identified eligible: 1 case-control study, 14 cohort and 26 cross-sectional studies (469362 total participants). Weight gain occurred predominantly in participants who were already overweight or obese. Associated factors included increased consumption of unhealthy food with decreased intake of healthy fresh fruits and vegetables, changes in physical activity, and altered sleep patterns. Weight loss during the pandemic was observed in individuals with previous low weight, and those who ate less and were more physically active before lock down. Associated factors included increased intake of fruits and vegetables, drinking more water and consuming no alcohol. Maintaining a stable weight was more difficult in populations with reduced income particularly in individuals with lower educational attainment. The findings of this systematic review highlight the short-term effects of pandemic confinements. Learning from the lockdown experience is fundamental if we are to prepare for the next wave; a holistic, reactive, tailored response is needed involving multiple providers.

Purpose The purpose of this study is to understand the strategy adopted by family firms in using social media for their business. Based on the social media usage, this paper attempts to segment family firms. To do so, a reactive – proactive – innovative (RPI) scale was developed for the study. Then, the family firms were categorised as reactive, proactive or innovative social media users. Further, based on the scale developed, clusters were created. Family firms were placed into different clusters based on the strategy that they had for using social media platforms for their business. Design/methodology/approach A pilot sample of 50 family firms and a main study of 256 Indian family firm entrepreneurs were surveyed through self-administered questionnaires. Factor analysis reduced the 12 scale-based questions to three distinct factors. Confirmatory factor analysis was then conducted on the main sample to confirm the constructs identified using exploratory factor analysis. Cluster analysis was used to build clusters of entrepreneurs who use social media as part of their digital marketing strategy. Findings Findings reveal that the Indian family firm market is largely divided into four main segments. These segments represent distinct behaviours with respect to the use of social media. The four segments of family firm entrepreneurs were named as high rollers, ignorant inhabitants, trend-setters, combative crowd based on their social media usage behaviour. These clusters give deep insights into the strategic usage of social media by family firms. Research limitations/implications The limitation of this study is that entrepreneurs from all Indian states were not considered in the sample because of cost implications. This research study has only created the segmentation of the family firms as reactive, proactive or innovative social media users and also has created the clusters as high rollers, ignorant inhabitants, trend-setters and combative crowd. Also, the reasons for their behaviour and root cause for the strategic usage have not been studied. Practical implications This study reflects on current practices of family firms with respect to usage of social media and groups them into large identifiable clusters. Equipped with the findings from this study, the RPI scale developed for the study and the clusters created, entrepreneurs can now move towards better use of social media for innovation. Originality/value Although past studies have advocated the use of social media to spur innovation in firms, this study segments the current market based on their practices. It allows readers to gauge the proportion of family firms using social media for innovation and paves the way for a change in behaviour amongst these firms.

Purpose This paper aims to examine how social comparison (SC) and belief in karma (KA) encourage materialism (MAT) and promote consumers’ life satisfaction (LS). Design/methodology/approach Two studies were conducted with Indian middle class consumers to test the basic premises of the current research. The first one used a survey (N = 247), while the second one used an experimental design (N = 206). Findings The survey results showed that SC and belief in KA promoted MAT amongst Indian consumers and further enhanced their LS. Findings from the experiment revealed a novel two-way interaction, in that the KA–MAT relationship was moderated by the underlying motivation for MAT. Research limitations/implications Future research may validate and extend our findings using different samples to increase external validity. Practical implications By explaining the interactive effects of MAT, its underlying motivation and belief in KA, managers will gain a better understanding of why consumers in an emerging market like India purchase conspicuous products. Originality/value This is the first paper to study how the KA–MAT relationship influences LS amongst consumers in the world’s fastest-rising economy. Furthermore, no prior research has reported a boundary condition for the KA–MAT relationship studied here. The findings contribute to an extremely limited body of literature on KA and consumption.

It is hypothesized that in the “more highly evolved” mammals, including the domesticated mammals, that the brainstem and the cerebellum receive arterial blood through the vertebrobasilar system whilst the internal carotid arteries primarily supply the forebrain. In camels, the arterial blood supply to the brain differs from that of ruminants since the internal carotid artery and the rostral epidural rete mirabile (RERM) are both present and the basilar artery contributes a significant proportion of cerebral afferent blood. In this study, we described the anatomical distribution of the vertebrobasilar system arterial supply in the dromedary. Secondly, we determined the direction of blood flow within the vertebral and basilar arteries using transcranial color doppler ultrasonography. Thirdly, we quantified the percentage arterial contributions of the carotid and vertebrobasilar systems to the dromedary brain. Fifty-five heads of freshly slaughtered male Omani dromedaries aged 2–6 years were dissected to determine the distribution and topography of the arterial distribution to the brain. Their anatomical orientation was assessed by casting techniques using epoxy resin, polyurethane resin and latex neoprene. The epoxy resin and polyurethane resin casts of the head and neck arteries were used to measure the diameter of vertebrobasilar arterial system and carotid arterial system at pre-determined locations. These arterial diameters were used to calculate the percentage of blood supplied by each arterial system. The vertebrobasilar system in dromedary camels consists of paired vertebral arteries that contribute to the ventral spinal artery and basilar artery at multiple locations. In most specimens the vertebral artery was the primary contributor to the basilar artery compared to that of the ventral spinal artery. In four specimens the ventral spinal arteries appear to be the dominant contributor to the basilar artery. Transcranial color doppler ultrasonography confirmed that the direction of blood flow within the vertebral and basilar arteries was toward the brain in animals examined in ventral recumbency and when standing. The vertebrobasilar system contributes 34% of the blood supply to the brain. The vertebrobasilar system is the exclusive supply to the medulla oblongata, pons and cerebellum.

Purpose The purpose of this paper is to integrate impostor syndrome and leadership research to identify antecedents of impostor syndrome, their impact on sustainable leader behaviors. The paper also postulates the moderating effect of mindfulness and leader member exchange on impostor syndrome and sustainable leader behaviors, respectively. Design/methodology/approach The paper relies on an integrative approach of literature review on impostor syndrome and leadership. After identifying gaps in impostor syndrome research and its intersectionality with the constructs of contextual leadership theory, an integrative conceptual framework was formulated incorporating antecedents, consequences and moderators of impostor syndrome. Findings Three antecedents of impostor syndrome were identified from the literature, namely, gender, family/social role expectation and personality traits. Additionally, this paper also unearths contextual factors as yet another antecedent to impostor syndrome. Negative impact of impostor syndrome on leader behaviors such as managerial decision-making, innovative work behavior (IWB) and organizational citizenship behavior (OCB) were established by connecting those to the three primary characteristics of impostor syndrome, namely, low self-efficacy, fear of failure and perceived fraudulence, respectively. Finally, the paper also posits the moderating role of leader member exchange and mindfulness and proposes mindfulness training as an effective intervention for impostor syndrome. Research limitations/implications This being a conceptual paper will benefit from empirical studies that corroborate theoretical posits. The scope of studying the effect of impostor syndrome on sustainable leader behavior was limited to three major variables, namely, managerial decision-making, IWB and OCB. Thus, it calls for a more elaborate model of impostor syndrome including other relevant leader behaviors. Practical implications The model when applied in organizational context addresses the need for mindfulness training to reduce the effect of impostor syndrome among leaders. Leaders will exhibit sustainable behaviors when provided with the right kind of training. Originality/value The study attempts to integrate the two independent constructs, impostor syndrome and leadership to establish a novel and meaningful connection and throws light to the unaddressed antecedents, consequences and moderators of its impact on sustainable leader behaviors. From learning and development practitioners’ perspective, it also signifies the effectiveness of mindfulness training among employees’ personal and professional development.