Background: The residual hemiparesis after stroke results in a unilateral reduction in propulsive force during gait. Prior work has suggested the presence of a propulsive reserve in the paretic limb. Objective: The purpose of this study was to quantify the paretic propulsive reserve in individuals post-stroke and to determine the biomechanical mechanism underlying the generation of additional paretic propulsive limb force. Methods: Ten individuals with chronic hemiparesis post-stroke walked on a treadmill against an impeding force (ascending 0 to 10%BW, in 2.5%BW increments, followed by descending 10 to 0%BW, also in 2.5%BW increments) applied to the body’s center of mass. The resulting propulsive forces were measured bilaterally and compared between impeding force levels. We then assessed potential mechanisms (trailing limb angle and plantarflexion moment) underlying the changes in propulsion. Results: Overall, peak paretic propulsive force increased by 92% and the paretic propulsive impulse increased by 225%, resulting in a significant increase in the paretic limb’s contribution to propulsion. Participants continued to produce increased paretic propulsion upon removal of the impeding force. The trailing limb angle contributed significantly to the increase in paretic propulsion, whereas the plantarflexion moment did not. Conclusions: Participants exhibited a robust propulsive reserve on the paretic limb, suggesting that there is untapped potential that can be exploited through rehabilitation to improve gait recovery. The increase in propulsive symmetry indicates that a greater response was observed by the paretic limb rather than increased compensation by the non-paretic limb.

BackgroundHealthcare systems increasingly engage interprofessional healthcare team members such as case managers, social workers, and community health workers to work directly with patients and improve population health. This study elicited perspectives of interprofessional healthcare team members regarding patient barriers to health and suggestions to address these barriers.MethodsThis is a qualitative study employing focus groups and semi-structured interviews with 39 interprofessional healthcare team members in Philadelphia to elicit perceptions of patients’ needs and experiences with the health system, and suggestions for positioning health care systems to better serve patients. Themes were identified using a content analysis approach.ResultsThree focus groups and 21 interviews were conducted with 26 hospital-based and 13 ambulatory-based participants. Three domains emerged to characterize barriers to care: social determinants, health system factors, and patient trust in the health system. Social determinants included insurance and financial shortcomings, mental health and substance abuse issues, housing and transportation-related limitations, and unpredictability associated with living in poverty. Suggestions for addressing these barriers included increased financial assistance from the health system, and building a workforce to address these determinants directly. Health care system factors included poor care coordination, inadequate communication of hospital discharge instructions, and difficulty navigating complex systems. Suggestions for addressing these barriers included enhanced communication between care sites, patient-centered scheduling, and improved patient education especially in discharge planning. Finally, factors related to patient trust of the health system emerged. Participants reported that patients are often intimidated by the health system, mistrusting of physicians, and fearful of receiving a serious diagnosis or prognosis. A suggestion for mitigating these issues was increased visibility of the health system within communities to foster trust and help providers gain a better understanding of unique community needs.ConclusionThis work explored interprofessional healthcare team members’ perceptions of patient barriers to healthcare engagement. Participants identified barriers related to social determinants of health, complex system organization, and patient mistrust of the health system. Participants offered concrete suggestions to address these barriers, with suggestions supporting current healthcare reform efforts that aim at addressing social determinants and improving health system coordination and adding new insight into how systems might work to improve patient and community trust.Electronic supplementary materialThe online version of this article (doi:10.1186/s12913-016-1751-5) contains supplementary material, which is available to authorized users.

Nonprofit hospital community health needs assessments in Philadelphia predominantly identify needs related to access to care and to some extent health behaviors. There is incomplete alignment between the needs identified in hospital assessments and the needs targeted in implementation strategies, underscoring a need for regional coordination in community benefit investments. Improved regional coordination between hospitals serving the region may offer the opportunity to eliminate duplicative efforts and increase the amount of funds available to address unmet needs.