{"doi":"10.14814/phy2.15129","title":"The impact of cardiac loading on a novel metric of left ventricular diastolic function in healthy middle‐aged adults: Systolic–diastolic coupling","abstract":"AIMS: Left ventricular (LV) restoring forces are primed by ventricular deformation during systole and contribute to cardiac relaxation and early diastolic suction. Systolic-diastolic coupling, the relationship between systolic contraction and diastolic recoil, is a novel marker of restoring forces, but the effect of left atrial pressure (LAP) is unknown. We tested preliminary methods of systolic-diastolic coupling comparing mitral annular velocities versus excursion distances and hypothesized a recoil/contraction distance ratio would remain unaffected across varying LAP, providing a surrogate for quantifying LV restoring forces. METHODS AND RESULTS: : slope = -0.001, p = 0.19). CONCLUSIONS: Systolic-diastolic coupling using mitral annular distance ratios to standardize early diastolic recoil to systolic contraction was not significantly impacted by LAP, in contrast to coupling ratios using velocities. The pressure invariance of annular distance coupling ratios suggests this metric quantifies the efficiency of LV restoring forces by isolating systolic contributions to early diastolic restoring forces independent from changes in LAP.","journal":"Physiological Reports","year":2021,"id":195253,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":9,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9549,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2021-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":766490,"name":"Vivek Koshti","orcid":null,"position":1,"is_corresponding":false},{"id":644683,"name":"Katrin A. Dias","orcid":"0000-0002-2430-9219","position":2,"is_corresponding":false},{"id":471587,"name":"Erin J. Howden","orcid":"0000-0002-6657-4395","position":3,"is_corresponding":false},{"id":369483,"name":"Christopher M. Hearon","orcid":"0000-0002-6561-3532","position":4,"is_corresponding":false},{"id":766491,"name":"I‐Jou Cheng","orcid":null,"position":5,"is_corresponding":false},{"id":338716,"name":"Linda S. Hynan","orcid":"0000-0002-4642-7769","position":6,"is_corresponding":false},{"id":350885,"name":"Benjamin D. Levine","orcid":"0000-0001-9064-7251","position":7,"is_corresponding":false},{"id":421826,"name":"Satyam Sarma","orcid":"0000-0002-0628-4919","position":8,"is_corresponding":false},{"id":421827,"name":"James P. MacNamara","orcid":"0000-0003-2795-6021","position":0,"is_corresponding":true}],"reference_count":44,"raw_metadata":null,"created_at":"2026-07-18T23:50:03.719152Z","pmid":"34873864","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}