{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T02:31:09Z","timestamp":1789180269704,"version":"build-2803163510"},"reference-count":53,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,1,29]],"date-time":"2023-01-29T00:00:00Z","timestamp":1674950400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Background: The heart\u2019s electrical activity has been the subject of numerous research concerning various physiological parameters. The frontal QRS-T angle (FQRST) is an advanced ECG variable with clinical epidemiological utility. This study aimed to determine the relationship between FQRST and physical activity exposure among young adults. Methods: We recorded the ECG with 12 leads of 124 participants (mean age 20.28 \u00b1 2.23 years, age range 18\u201327 years). Next, we measured their physical activity level (PAL) with the International Physical Activity Questionnaire\u2014Short Form (IPAQ), which categorizes activity into three classes: low, moderate, or high. Results: An inferential analysis, based on the Kruskal-Wallis H test and Mann\u2013Whitney U test, revealed a statistically significant difference in FQRST between the three groups of subjects, classified by their PAL (p &lt; 0.001). We also identified a significant regression model between the body mass index (BMI) and the FQRST (p &lt; 0.001). Conclusions: The physical activity regime of young adults significantly influences the concordance between ventricular depolarization and repolarization, reflected in the FQRST\u2019s width. Also, we found a regression model between FQRST and BMI with statistical significance.<\/jats:p>","DOI":"10.3390\/ijerph20032411","type":"journal-article","created":{"date-parts":[[2023,1,30]],"date-time":"2023-01-30T04:31:27Z","timestamp":1675053087000},"page":"2411","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Relationship between the Frontal QRS-T Angle on ECG and Physical Activity Level in Young Adults"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3081-741X","authenticated-orcid":false,"given":"Constantin","family":"Ciucurel","sequence":"first","affiliation":[{"name":"Department of Medical Assistance and Physical Therapy, University of Pitesti, 110040 Pitesti, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9673-9309","authenticated-orcid":false,"given":"Elena Ioana","family":"Iconaru","sequence":"additional","affiliation":[{"name":"Department of Medical Assistance and Physical Therapy, University of Pitesti, 110040 Pitesti, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,29]]},"reference":[{"key":"ref_1","first-page":"872","article-title":"QRS-T angle as a predictor of sudden cardiac death in a middle-aged general population","volume":"14","author":"Aro","year":"2012","journal-title":"EP Eur."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"939633","DOI":"10.3389\/fphys.2022.939633","article-title":"Intra-subject stability of different expressions of spatial QRS-T angle and their relationship to heart rate","volume":"13","author":"Hnatkova","year":"2022","journal-title":"Front. 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