Our research suggests that implementing an early vocational rehabilitation programme with individuals in the hospital setting is feasible and has good potential for enhancing post-injury labour-force participation.
Tardigrades must negotiate heterogeneous, fluctuating environments and accordingly utilize locomotive strategies capable of dealing with variable terrain. We analyze the kinematics and interleg coordination of freely walking tardigrades (species: Hypsibius exemplaris). We find that tardigrade walking replicates several key features of walking in insects despite disparities in size, skeleton, and habitat. To test the effect of environmental changes on tardigrade locomotor control circuits we measure kinematics and interleg coordination during walking on two substrates of different stiffnesses. We find that the phase offset between contralateral leg pairs is flexible, while ipsilateral coordination is preserved across environmental conditions. This mirrors similar results in insects and crustaceans. We propose that these functional similarities in walking coordination between tardigrades and arthropods is either due to a generalized locomotor control circuit common to panarthropods or to independent convergence onto an optimal strategy for robust multilegged control in small animals with simple circuitry. Our results highlight the value of tardigrades as a comparative system toward understanding the mechanisms—neural and/or mechanical—underlying coordination in panarthropod locomotion.
Background: A pilot early-intervention vocational rehabilitation program was conducted in Sydney, Australia, over a 2-year period. It was postulated that the early provision of integrated vocational rehabilitation services in the hospital settings for newly injured individuals would be well received and result in better employment and psychosocial health outcomes. Objective: The objective of this qualitative inquiry was to examine the perspectives of program participants who had completed the intervention about the timeliness, perceived value, and critical elements of the early intervention. Methods: A convenience sample of participants was selected by accessibility; participants were interviewed individually after discharge using a semi-structured approach. Transcripts of the interviews were created via audio recordings; interviews were transcribed verbatim, and the contents were analyzed thematically. Results: Thirteen participants aged from 19 to 60 years with varying levels of impairment and vocational backgrounds were interviewed from 7 to 21 months post injury. Overall, the early introduction of vocational rehabilitation services was well received and viewed positively. Emerging themes include sense of direction and distraction, advocacy, and support, with "hope" (early after injury) emerging as the overarching theme. Criticisms voiced about the program were that it was offered too early in the intensive care unit and there were competing interests and information overload in the early recovery phase. Conclusions: Vocational rehabilitation provided during inpatient rehabilitation appears appropriate, important, and valuable from patients' perspective. Early engagement results in feelings of hope and encourages patients to see the possibility of returning to work or education very early after injury, and it allows rehabilitation to be directed accordingly.
Tardigrades must negotiate heterogeneous, fluctuating environments, and accordingly utilize locomotive strategies capable of dealing with variable terrain. We analyze the kinematics and inter-leg coordination of freely walking tardigrades (species: Hypsibius dujardini). We find that tardigrade walking replicates several key features of walking in insects despite disparities in size, skeleton, and habitat. To test the effect of environmental changes on tardigrade locomotor control circuits, we measure kinematics and inter-leg coordination during walking on two substrates of different stiffnesses. We find that the phase offset between contralateral leg pairs is flexible, while ipsilateral coordination is preserved across environmental conditions. This mirrors similar results in insects and crustaceans. We propose that these functional similarities in walking coordination between tardigrades and arthropods is either due to a generalized locomotor control circuit common to panarthropods, or to independent convergence onto an optimal strategy for robust multi-legged control in small animals with simple circuitry. Our results highlight the value of tardigrades as a comparative system towards understanding the mechanisms -- neural and/or mechanical -- underlying coordination in panarthropod locomotion.
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