Ndidiamaka D. Matthews
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Ndidiamaka D. Matthews has a total of 33 co-authors. Here are the top co-authors by number of shared publications:
- K. Michael Rowley
Department of Kinesiology, California State University East Bay
2 shared publications Libby Krause
Ndidiamaka Matthews is the associate professor of Clinical Physical Therapy, Vice Chair of Equity, Diversity, and Inclusion, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA. Please address all correspondence to Ndidiamaka Matthews
2 shared publicationsAn Ky
Department of Kinesiology, California State University East Bay , Hayward, California
1 shared publication- Anita Sethi Campbell
Department of Physical Therapy, College of Health Sciences, University of Missouri
1 shared publication - Bernadette Williams-York
Division of Physical Therapy , Department of Rehabilitation Medicine, School of Medicine Seattle, Washington, United States
1 shared publication - Carolyn Ervin
Division of Biostatistics & Epidemiology, Keck School of Medicine, University of Southern California, 1540 Alcazar St., CHP 222, MC 9010, Los Angeles, CA 90033, USA
1 shared publication
Latest Publications
- 6 November 2025
- Published by Wolters Kluwer Health in Journal of Physical Therapy Education
Holding Ourselves Accountable: Use of a Bias Reporting Process in an Academic Physical Therapy Program
Background and Purpose: Bias has been documented in physical therapy (PT) educational settings and poses a significant barrier to the achievement of educational equity and excellence. Bias reporting mechanisms can be used for the confidential reporting of harmful behaviors witnessed or experienced. Case Description: This case report describes a process for a bias reporting mechanism in an academic PT program, the challenges faced, and strategies for building community engagement and trust in the process, and restorative actions used to meet individual and community needs. Outcomes: Five years after implementing this process, the bias reporting mechanism has had good community engagement with 36 reports received and an increasing percentage of non-anonymous reporters, which suggests growing organizational trust in the process. Discussion and Conclusion: A bias reporting process may serve as a valuable mechanism for academic PT programs looking to achieve educational equity and excellence.
- 6 November 2025
- Published by Wolters Kluwer Health in Journal of Physical Therapy Education
Holding Ourselves Accountable: Use of a Bias Reporting Process in an Academic Physical Therapy Program
Background and Purpose: Bias has been documented in physical therapy (PT) educational settings and poses a significant barrier to the achievement of educational equity and excellence. Bias reporting mechanisms can be used for the confidential reporting of harmful behaviors witnessed or experienced. Case Description: This case report describes a process for a bias reporting mechanism in an academic PT program, the challenges faced, and strategies for building community engagement and trust in the process, and restorative actions used to meet individual and community needs. Outcomes: Five years after implementing this process, the bias reporting mechanism has had good community engagement with 36 reports received and an increasing percentage of non-anonymous reporters, which suggests growing organizational trust in the process. Discussion and Conclusion: A bias reporting process may serve as a valuable mechanism for academic PT programs looking to achieve educational equity and excellence.
- 28 December 2024
- Published by Taylor & Francis in Physical Therapy Reviews
- Vol. 30 (1) , 75-82
Systemic discrimination and racism mitigation in U.S. health professions graduate education: a scoping review protocol
- 28 December 2024
- Published by Taylor & Francis in Physical Therapy Reviews
- Vol. 30 (1) , 75-82
Systemic discrimination and racism mitigation in U.S. health professions graduate education: a scoping review protocol
- 11 July 2024
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 104 (10)
Disparities in Physical Therapy Outcomes Based on Race and Ethnicity: A Scoping Review
Objective: This scoping review synthesizes and summarizes the evidence on racial and ethnic disparities in outcomes after physical therapist treatment. Methods: Four databases from 2001 through 2021 were searched for articles reporting physical therapy outcomes across racial and ethnic groups. The Arksey and O’Malley methodological framework was adapted for this scoping review. Two reviewers screened the abstracts, and 5 reviewers screened full texts for inclusion. Five reviewers extracted information including study design, diagnoses, setting, outcomes reported, the domains the outcomes measured, and racial and ethnic groups included. To identify disparities, summarized differences in outcomes (better, worse, no difference) for each racial and ethnic group compared to White patients were calculated. Results: Of 1511 abstracts screened, 65 met inclusion criteria, 57 of which were observational designs. All 65 articles included non-Hispanic White patients as the reference group. A majority of the physical therapy outcomes reported by race were for Black patients and/or Hispanic or Latino patients, whereas outcomes for Asian, American Indian, Alaskan Native, and/or Native Hawaiians or Pacific Islander patients were reported infrequently. Most articles reported disparities in health outcomes for patients in the inpatient rehabilitation setting (n = 48) and for adults (n = 59) with neurologic diagnoses (n = 36). Compared to White patients, worse outcomes were reported more frequently for all marginalized racial and ethnic groups after physical therapy, with the exception of marginalized groups having the same or better outcomes for successful post-rehabilitation community discharge. Conclusion: Gaps remain in understanding outcome disparities beyond older adult and neurologic populations as well as for musculoskeletal diagnoses frequently treated by physical therapists. Impact: The presence of racial and ethnic disparities in physical therapy outcomes should motivate physical therapists to understand the mechanisms underlying disparities and focus on social and structural drivers of health inequity in their clinical decision-making.
- 11 July 2024
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 104 (10)
Disparities in Physical Therapy Outcomes Based on Race and Ethnicity: A Scoping Review
Objective: This scoping review synthesizes and summarizes the evidence on racial and ethnic disparities in outcomes after physical therapist treatment. Methods: Four databases from 2001 through 2021 were searched for articles reporting physical therapy outcomes across racial and ethnic groups. The Arksey and O’Malley methodological framework was adapted for this scoping review. Two reviewers screened the abstracts, and 5 reviewers screened full texts for inclusion. Five reviewers extracted information including study design, diagnoses, setting, outcomes reported, the domains the outcomes measured, and racial and ethnic groups included. To identify disparities, summarized differences in outcomes (better, worse, no difference) for each racial and ethnic group compared to White patients were calculated. Results: Of 1511 abstracts screened, 65 met inclusion criteria, 57 of which were observational designs. All 65 articles included non-Hispanic White patients as the reference group. A majority of the physical therapy outcomes reported by race were for Black patients and/or Hispanic or Latino patients, whereas outcomes for Asian, American Indian, Alaskan Native, and/or Native Hawaiians or Pacific Islander patients were reported infrequently. Most articles reported disparities in health outcomes for patients in the inpatient rehabilitation setting (n = 48) and for adults (n = 59) with neurologic diagnoses (n = 36). Compared to White patients, worse outcomes were reported more frequently for all marginalized racial and ethnic groups after physical therapy, with the exception of marginalized groups having the same or better outcomes for successful post-rehabilitation community discharge. Conclusion: Gaps remain in understanding outcome disparities beyond older adult and neurologic populations as well as for musculoskeletal diagnoses frequently treated by physical therapists. Impact: The presence of racial and ethnic disparities in physical therapy outcomes should motivate physical therapists to understand the mechanisms underlying disparities and focus on social and structural drivers of health inequity in their clinical decision-making.
- 21 May 2024
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 104 (10)
Diversity, Equity, Inclusion, and Antiracism Research in Physical Therapy Over the Last 25 Years: A Scoping Review
Objective: Discussions of the root causes of health disparities and educational inequities often neglect to identify racism as a primary factor. Researchers must take a systems perspective to identify the effects of racism and other forms of systemic oppression on health. It is unclear to what extent this perspective exists in the physical therapy research literature. We conducted a scoping review to quantify and describe the volume of research in physical therapy pertaining to diversity, equity, and inclusion specifically examining race and/or ethnicity and references racism or antiracism. Methods: A systematic search of PubMed and Scopus databases for articles published between 1997 and 2021 was conducted. Articles were screened to ensure they were focused exclusively or primarily on physical therapy and used diversity, equity, and inclusion terms in the context of personal identity factors. This resulted in 158 relevant articles. Each was tagged with an article type and personal identity factor focus. Results: A majority of the included articles were descriptive/observational in nature. The included articles explored various personal identity factors, with race and ethnicity being the most common focus followed by culture, disability, and socioeconomic status. A small proportion of articles explicitly discussed racism or antiracism. Conclusion: These findings highlight the need in physical therapy research for greater attention to racism as a fundamental cause of health disparities and educational inequities. Addressing this gap is crucial for promoting diversity, equity, and inclusion within the field and ultimately achieving optimal health outcomes for marginalized populations. Impact: Including consideration of racism and other forms of systemic oppression in the motivation, design, and interpretation of research in physical therapy will help to make more visible the root causes of inequity and improve our ability to develop effective, multi-level interventions.
- 21 May 2024
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 104 (10)
Diversity, Equity, Inclusion, and Antiracism Research in Physical Therapy Over the Last 25 Years: A Scoping Review
Objective: Discussions of the root causes of health disparities and educational inequities often neglect to identify racism as a primary factor. Researchers must take a systems perspective to identify the effects of racism and other forms of systemic oppression on health. It is unclear to what extent this perspective exists in the physical therapy research literature. We conducted a scoping review to quantify and describe the volume of research in physical therapy pertaining to diversity, equity, and inclusion specifically examining race and/or ethnicity and references racism or antiracism. Methods: A systematic search of PubMed and Scopus databases for articles published between 1997 and 2021 was conducted. Articles were screened to ensure they were focused exclusively or primarily on physical therapy and used diversity, equity, and inclusion terms in the context of personal identity factors. This resulted in 158 relevant articles. Each was tagged with an article type and personal identity factor focus. Results: A majority of the included articles were descriptive/observational in nature. The included articles explored various personal identity factors, with race and ethnicity being the most common focus followed by culture, disability, and socioeconomic status. A small proportion of articles explicitly discussed racism or antiracism. Conclusion: These findings highlight the need in physical therapy research for greater attention to racism as a fundamental cause of health disparities and educational inequities. Addressing this gap is crucial for promoting diversity, equity, and inclusion within the field and ultimately achieving optimal health outcomes for marginalized populations. Impact: Including consideration of racism and other forms of systemic oppression in the motivation, design, and interpretation of research in physical therapy will help to make more visible the root causes of inequity and improve our ability to develop effective, multi-level interventions.
- 3 May 2023
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 103 (7)
Implementation of a Comprehensive Anti-Racism Plan in an Academic Physical Therapy Department: An Administrative Case Report
Objective: Transforming the University of Southern California health care system requires that institutions and organizations position equity, diversity, inclusion (EDI), and anti-racism as central to their missions. The purpose of this administrative case report was to describe a systematic approach taken by an academic physical therapy department to develop a comprehensive antiracism plan that engages all interested and affected parties and includes processes for sustainable, long-term engagement. Methods: Four strategies contributed to organizational change toward anti-racism: Holding Ourselves Accountable; Developing a Plan; Building Consensus; and Providing Education, Support, and Resources. The attitudes of faculty and staff about racism and anti-racist actions were assessed through surveys at the start of the process and after 1 year. Engagement in activities, meetings, and trainings related to EDI and anti-racism was logged for faculty and staff. Results: From November 2020 through November 2021, several outcomes were achieved, including: making structural organizational changes; updating faculty merit review to include EDI; developing a bias reporting mechanism; establishing faculty development activities, resources, and groups; and implementing structured efforts to recruit a diverse cohort. Within that year, faculty and staff engaged in 99.32 hours of EDI and anti-racism trainings, workshops, and resource groups. Survey data showed persistent high support and commitment to EDI and anti-racism. Faculty and staff reported that they felt more equipped to identify and address individual and institutional racism and they reported risking their reputations to talk about race more often. Confidence in their ability to identify and resolve conflicts related to microaggressions, cultural insensitivity, and bias improved. However, their self-reported ability to identify and address structural racism remained unchanged. Conclusion: By approaching anti-racism as transformative rather than performative, an academic physical therapy department was able to develop and implement a comprehensive anti-racism plan with high support and engagement. Impact: The physical therapy profession has not been immune to racism and health injustice. Organizational change to become anti-racist is imperative for excellence and a necessary challenge to undertake if the physical therapy profession is to transform society and improve the human experience.
- 3 May 2023
- Published by Oxford University Press (OUP) in Physical Therapy
- Vol. 103 (7)
Implementation of a Comprehensive Anti-Racism Plan in an Academic Physical Therapy Department: An Administrative Case Report
Objective: Transforming the University of Southern California health care system requires that institutions and organizations position equity, diversity, inclusion (EDI), and anti-racism as central to their missions. The purpose of this administrative case report was to describe a systematic approach taken by an academic physical therapy department to develop a comprehensive antiracism plan that engages all interested and affected parties and includes processes for sustainable, long-term engagement. Methods: Four strategies contributed to organizational change toward anti-racism: Holding Ourselves Accountable; Developing a Plan; Building Consensus; and Providing Education, Support, and Resources. The attitudes of faculty and staff about racism and anti-racist actions were assessed through surveys at the start of the process and after 1 year. Engagement in activities, meetings, and trainings related to EDI and anti-racism was logged for faculty and staff. Results: From November 2020 through November 2021, several outcomes were achieved, including: making structural organizational changes; updating faculty merit review to include EDI; developing a bias reporting mechanism; establishing faculty development activities, resources, and groups; and implementing structured efforts to recruit a diverse cohort. Within that year, faculty and staff engaged in 99.32 hours of EDI and anti-racism trainings, workshops, and resource groups. Survey data showed persistent high support and commitment to EDI and anti-racism. Faculty and staff reported that they felt more equipped to identify and address individual and institutional racism and they reported risking their reputations to talk about race more often. Confidence in their ability to identify and resolve conflicts related to microaggressions, cultural insensitivity, and bias improved. However, their self-reported ability to identify and address structural racism remained unchanged. Conclusion: By approaching anti-racism as transformative rather than performative, an academic physical therapy department was able to develop and implement a comprehensive anti-racism plan with high support and engagement. Impact: The physical therapy profession has not been immune to racism and health injustice. Organizational change to become anti-racist is imperative for excellence and a necessary challenge to undertake if the physical therapy profession is to transform society and improve the human experience.
- Open Access
- 25 August 2006
- Published by Springer Nature in BMC Musculoskeletal Disorders
- Vol. 7 (1) , 70
The immediate and long-term effects of exercise and patient education on physical, functional, and quality-of-life outcome measures after single-level lumbar microdiscectomy: a randomized controlled trial protocol
Background: Low back pain remains a costly quality-of-life-related health problem. Microdiscectomy is often the surgical procedure of choice for a symptomatic, single-level, lumbar disc herniation in younger and middle-aged adults. The question of whether a post-microdiscectomy exercise program enhances function, quality of life, and disability status has not been systematically explored. Thus, the overall purpose of this study is to assess immediate and long-term outcomes of an exercise program, developed at University of Southern California (USC), targeting the trunk and lower extremities (USC Spine Exercise Program) for persons who have undergone a single-level microdiscectomy for the first time. Methods/design: One hundred individuals between the ages of 18 and 60 who consent to undergo lumbar microdiscectomy will be recruited to participate in this study. Subjects will be randomly assigned to one of two groups: 1) one session of back care education, or 2) a back care education session followed by the 12-week USC Spine Exercise Program. The outcome examiners (evaluators), as well as the data managers, will be blinded to group allocation. Education will consist of a one-hour "one-on-one" session with the intervention therapist, guided by an educational booklet specifically designed for post-microdiscectomy care. This session will occur four to six weeks after surgery. The USC Spine Exercise Program consists of two parts: back extensor strength and endurance, and mat and upright therapeutic exercises. This exercise program is goal-oriented, performance-based, and periodized. It will begin two to three days after the education session, and will occur three times a week for 12 weeks. Primary outcome measures include the Oswestry Disability Questionnaire, Roland-Morris Disability Questionnaire, SF-36® quality of life assessment, Subjective Quality of Life Scale, 50-foot Walk, Repeated Sit-to-Stand, and a modified Sorensen test. The outcome measures in the study will be assessed before and after the 12-week post-surgical intervention program. Long-term follow up assessments will occur every six months beginning one year after surgery and ending five years after surgery. Immediate and long-term effects will be assessed using repeated measures multivariate analysis of variance (MANOVA). If significant interactions are found, one-way ANOVAs will be performed followed by post-hoc testing to determine statistically significant pairwise comparisons. Discussion: We have presented the rationale and design for a randomized controlled trial evaluating the effectiveness of a treatment regimen for people who have undergone a single-level lumbar microdiscectomy.
- 25 August 2006
- Published by Springer Nature in BMC Musculoskeletal Disorders
- Vol. 7 (1) , 70
Open AccessThe immediate and long-term effects of exercise and patient education on physical, functional, and quality-of-life outcome measures after single-level lumbar microdiscectomy: a randomized controlled trial protocol
Background: Low back pain remains a costly quality-of-life-related health problem. Microdiscectomy is often the surgical procedure of choice for a symptomatic, single-level, lumbar disc herniation in younger and middle-aged adults. The question of whether a post-microdiscectomy exercise program enhances function, quality of life, and disability status has not been systematically explored. Thus, the overall purpose of this study is to assess immediate and long-term outcomes of an exercise program, developed at University of Southern California (USC), targeting the trunk and lower extremities (USC Spine Exercise Program) for persons who have undergone a single-level microdiscectomy for the first time. Methods/design: One hundred individuals between the ages of 18 and 60 who consent to undergo lumbar microdiscectomy will be recruited to participate in this study. Subjects will be randomly assigned to one of two groups: 1) one session of back care education, or 2) a back care education session followed by the 12-week USC Spine Exercise Program. The outcome examiners (evaluators), as well as the data managers, will be blinded to group allocation. Education will consist of a one-hour "one-on-one" session with the intervention therapist, guided by an educational booklet specifically designed for post-microdiscectomy care. This session will occur four to six weeks after surgery. The USC Spine Exercise Program consists of two parts: back extensor strength and endurance, and mat and upright therapeutic exercises. This exercise program is goal-oriented, performance-based, and periodized. It will begin two to three days after the education session, and will occur three times a week for 12 weeks. Primary outcome measures include the Oswestry Disability Questionnaire, Roland-Morris Disability Questionnaire, SF-36® quality of life assessment, Subjective Quality of Life Scale, 50-foot Walk, Repeated Sit-to-Stand, and a modified Sorensen test. The outcome measures in the study will be assessed before and after the 12-week post-surgical intervention program. Long-term follow up assessments will occur every six months beginning one year after surgery and ending five years after surgery. Immediate and long-term effects will be assessed using repeated measures multivariate analysis of variance (MANOVA). If significant interactions are found, one-way ANOVAs will be performed followed by post-hoc testing to determine statistically significant pairwise comparisons. Discussion: We have presented the rationale and design for a randomized controlled trial evaluating the effectiveness of a treatment regimen for people who have undergone a single-level lumbar microdiscectomy.