Formative Examination of a Multi-Focus Educational Exergame Designed for Older Adults

Exergames and digital health games have shown promising outcomes in older adults. Most games have had one focus (e.g., physical activity, cognitive functioning). We developed a demonstration version of a multi-focus educational exergame (i.e., healthy eating, physical activity, cognition) that builds on healthy aging theory. Community-engaged and mixed methods (e.g., surveys, focus groups) research approaches were used to examine preliminary game acceptability and usability. The game was demonstrated with 20 senior center members (95% female; 48% African American; 52% White; average age 64 years) and participants were able to play the game. The post-gameplay survey results support acceptability/usability of the game. For example, 87% of participants “agreed” or “strongly agreed” that they felt comfortable playing; the game instructions were clear; the text was readable; and gameplay was enjoyable. The majority also “agreed”/“strongly agreed” that the audio was appealing/helpful in playing the game (86%); sound quality was appropriate (78%); hand tracking was precise (57%), feedback on correct/incorrect responses was motivating (73%); they felt excited to get the correct answers (80%); they would play the game again (87%); and they would recommend it to a friend/family member (80%). When asked how often they would play it, the responses were: 33% five or more times/week; 27% three-four times/week; 20% one-two times/week; and 20% never. Observations and focus groups further clarified acceptability and identified areas for improvement (e.g., game instructions). Preliminary results support acceptability of this multi-component educational exergame with older adults and suggest the potential for future tailoring of this game.

Eusociality and the evolution of aging in superorganisms

Eusocial insects ants, bees, wasps and termites are being recognized as model organisms to unravel the evolutionary paradox of aging for two reasons: (1) queens (and kings, in termites) of social insects outlive similar sized solitary insects by up to several orders of magnitude; (2) all eusocial taxa show a divergence of long queen and shorter worker lifespans, despite their shared genomes and even under risk-free laboratory environments. Traditionally, these observations have been explained by invoking classical evolutionary aging theory: well-protected inside their nests, queens are much less exposed to external hazards than foraging workers, and this provides natural selection the opportunity to favor queens that perform well at advanced ages. Although quite plausible, these verbal arguments have not been backed up by mathematical analysis. Here, for the first time, we provide quantitative models for the evolution of caste specific aging patterns. We show that caste-specific mortality risks are in general neither sufficient nor necessary to explain the evolutionary divergence in lifespan between queens and workers and the extraordinary queen lifespans. Reproductive monopolization and the delayed production of sexual offspring in highly social colonies lead natural selection to inherently favor queens that live much longer than workers, even when exposed to the same external hazards. Factors that reduce a colony's reproductive skew, such as polygyny and worker reproduction, tend to reduce the evolutionary divergence in lifespan between queens and workers. Caste-specific extrinsic hazards also affect lifespan divergence but to a much smaller extent than reproductive monopolization.

Antioxidation Defenses of Apis mellifera Queens and Workers Respond to Imidacloprid in Different Age-Dependent Ways: Old Queens Are Resistant, Foragers Are Not

We investigated how different antioxidant defenses (ADSs) were shaped by evolution in young/old Apis mellifera workers and queens to broaden the limited knowledge on whether ADSs are effective in contemporary pesticide environments and to complete bee oxidative-aging theory. We acquired 1-day-old, 20-day-old, and 2-year-old queens and 1-day-old and 20-day-old workers (foragers) fed 0, 5, or 200 ppb imidacloprid, a pesticide oxidative stressor. The activities of catalase, glutathione peroxidase, glutathione S-transferase, and superoxide dismutase and the level of total antioxidant potential were determined in hemolymph. The ADS was upregulated in workers with age but downregulated in queens. Imidacloprid suppressed the ADS in all workers, particularly in foragers with an upregulated ADS, but it did not affect the ADS in 1-day-old queens. In contrast to foragers, the downregulated ADS of 2-year-old queens was unexpectedly highly upregulated by imidacloprid, which has not been previously shown in such old queens. The principal component analysis confirmed that queen and worker ADSs responded to imidacloprid in opposite ways, and ADS of 2-year-queens was markedly different from those of others. Thus, evolutionary shaped ADSs of older queens and workers may be of the limited use for foragers dwelling in pesticide ecosystems, but not for old queens.

Matching and Coordination among Elderly Services, Aging, and Economy in China

Under the background of China getting old before getting rich, the elderly service, as a public project, should be coordinated with the degree of aging and economic level to avoid the improper allocation of public resources. This article aims to investigate whether an insufficient or overthreshold phenomenon exists in China. Firstly, based on the “active aging theory,” the elderly service index is constructed, and then matching and coordination models are proposed to obtain coordination degrees among aging, the elderly service, and the economy. In terms of coordination, elderly service-aging is at a low level and elderly service-economic level shows an agglomeration of high in the east and low in the west, while the elderly service-aging-economic level is quite different among provinces. In provinces with high coordination (e.g., Beijing and Guangdong), the elderly services are appropriate. In comparison, in provinces with low coordination, the elderly services may either lag behind the aging degree (e.g., Sichuan) or exceed the local economic level (e.g., Shannxi). Therefore, the development of aging services should focus on coordination rather than quantification and scale. Considering the regional heterogeneity, we can formulate soft constraints allowing a lower minimum limit and greater flexibility range.

Janowitz and Huntington—Better Together: A Response

Suzanne Nielsen and Hugh Liebert recently published “The Continuing Relevance of Morris Janowitz’s The Professional Soldier for the Education of Officers” in which they argued that officer education is too enamored with Samuel Huntington’s aging theory of civil–military relations from Soldier and the State. Huntington’s ideal of objective control grants senior military advisors autonomy within their professional sphere, and it best ensures that unvarnished military expertise survives politically charged national security decision making processes intact, regardless of which party controls the White House. While these features explain Huntington’s traditional popularity with the military, Nielsen and Liebert warn that Huntington’s separation between military and civilian matters in theory engenders wishful thinking in practice, so much so that officers neglect, to the detriment of national policy, Morris Janowitz, Huntington’s cofounder of the modern study of civil–military relations. However, the civil–military community should reconsider banishing Huntington in order to appreciate Janowitz.