This was Dr. Hart's first study published in a peer-reviewed science journal. The year was 1988 and the investigation pertained to testing the accuracy of x-ray in detecting atlas (upper neck vertebra) misalignment. Here is the citation:
Hart J. Effect of patient positioning on an upper cervical x-ray listing: a case study. CHIROPRACTIC: Journal of Chiropractic Research and Clinical Investigation 1988, pp. 19-21.
In this study, which Dr. Hart participated in, baseball players from the University of South Carolina - Upstate who were adjusted showed statistically significant improvements compared to their counterparts who were not adjusted.
Citation: Schwartzbauer J, Kolber J, Schwartzbauer M, Hart JF, Zhang J. Athletic performance and physiological measures in baseball players following upper cervical chiropractic care: a pilot study. Journal of Vertebral Subluxation Research 1997; 1(4):33-9. Journal: http://vertebralsubluxation.sharepoint.com/Pages/1497_0043_athletic.aspx
In this study, Dr. Hart compared resting pulse rates (RPR) in chiropractic patients to the general population.
Citation: Hart J. Comparison of resting pulse rates in chiropractic students versus the general population. Topics in Integrative Health Care 2012; 3(4): ID 3.4005. Journal: http://www.tihcij.com/Articles/Comparison-of-Resting-Pulse-Rates-in-Chiropractic-Students-Versus-the-General-Population.aspx?id=0000379
In this study, which Dr. Hart conducted, atlas (upper neck vertebra) subluxation was adjusted and followed by, as a group, a decrease (improvement), in resting pulse rate. Here is the published study:
Hart J. Reduction of resting pulse rate following chiropractic adjustment of atlas subluxation. Annals of Vertebral Subluxation Research 2014; March 3: 16-21.
There is emerging evidence that chiropractic care may have a beneficial effect on high blood pressure. In this study, Dr. Hart retrospectively compared hypertension death rates by state according to geographic concentrations of chiropractors in the United States. Dr. Hart found that hypertension death rates were lower in states that had higher concentration of chiropractors. Obviously there are other factors that affect blood pressure, so further, more rigorous research is needed to arrive at any firm conclusions. Here is the citation for the study:
Hart J. Association of hypertension mortality rates with geographic concentrations of chiropractors and medical doctors in the U.S., 2008. Dose Response 2013; 11(4): 543-549. PubMed: http://www.ncbi.nlm.nih.gov/pubmed/?term=24298229
In this study, Dr. Hart leads by example to show how patients can monitor their own neurological progress over time (a two year period in this case study) by self-measuring their resting pulse rates. Here is the citation:
Hart J. Monitoring neurological function with resting pulse rates over a 2 year period for an individual patient: A feasibility study. Internet Journal of Chiropractic 2017; 6 (1). DOI: 10.5580/IJCH.52237. Journal: http://ispub.com/IJCH/6/1/52237#