Aerospace medicine and biology: A continuing bibliography with indexes (supplement 335)

This bibliography lists 143 reports, articles and other documents introduced into the NASA Scientific and Technical Information System during March, 1990. Subject coverage includes: aerospace medicine and psychology, life support systems and controlled environments, safety equipment, exobiology and extraterrestrial life, and flight crew behavior and performance

Effects of the visual exercise environments on cognitive directed attention, energy expenditure and perceived exertion

Green exercise research often reports psychological health outcomes without rigorously controlling exercise. This study examines effects of visual exercise environments on directed attention, perceived exertion and time to exhaustion, whilst measuring and controlling the exercise component. Participants completed three experimental conditions in a randomized counterbalanced order. Conditions varied by video content viewed (nature; built; control) during two consistently-ordered exercise bouts (Exercise 1: 60% VO2peakInt for 15-mins; Exercise 2: 85% VO2peakInt to voluntary exhaustion). In each condition, participants completed modified Backwards Digit Span tests (a measure of directed attention) pre-and post-Exercise 1. Energy expenditure, respiratory exchange ratio and perceived exertion were measured during both exercise bouts. Time to exhaustion in Exercise 2 was also recorded. There was a significant time by condition interaction for Backwards Digit Span scores (F 2,22 = 6.267, p = 0.007). Scores significantly improved in the nature condition (p < 0.001) but did not in the built or control conditions. There were no significant differences between conditions for either perceived exertion or physiological measures during either Exercise 1 or Exercise 2, or for time to exhaustion in Exercise 2. This was the first study to demonstrate effects of controlled exercise conducted in different visual environments on post-exercise directed attention. Via psychological mechanisms alone, visual nature facilitates attention restoration during moderate-intensity exercise

A river runs through the landscape: Everyday use in an ever changing environment

The meaning of riverine landscapes to society has evolved to serve our ever-changing needs, from harvesting and transporting resources to arenas for outdoor recreation and contemplation. From the 18th century, rivers have been important resources for industry and hydroelectric power. The objective of this study is to explore and describe the rhythms of everyday use of a river environment using multiple quantitative and qualitative methods, and to identify subjective, multiple and often competing relations. We use Lefebvre’s concept of rhythmanalysis and Ingold’s contextual approach as a tool for bridging scientific and methodological disciplines. Our results show a wide breadth in everyday activities and a dynamic relation between people and the river on multiple time scales. The use of the river environment appears orderly and predictable, but the wide spectrum of everyday users on different spatiotemporal scales is diverse and forms multiple rhythms at each locality. The partial lockdown in Norway in response to Covid-19 and the subsequent shifts in people’s daily routines changed the rhythm of daily and weekly use patterns, and demonstrates how rhythms can change rapidly in the face of largescale, societal agitation. We argue that rhythmanalysis is a useful analytical tool in interdisciplinary approaches to better understand the use and valuations of landscapes.publishedVersio