{"doi":"10.1589/jpts.27.19","title":"The changes of pulmonary function and pulmonary strength according to time of day: a preliminary study","abstract":null,"journal":"Journal of Physical Therapy Science","year":2015,"id":607734,"datarank":0.26876392038420827,"base_score":1.791759469228055,"endowment":1.791759469228055,"self_citation_contribution":0.26876392038420827,"citation_network_contribution":0.0,"self_endowment_contribution":0.26876392038420827,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":5,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1560612,"name":"Laurentius Jongsoon Kim","orcid":null,"position":1,"is_corresponding":false},{"id":1560611,"name":"Min-Hyung Rhee","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"The changes of pulmonary function and pulmonary strength according to time of day: a preliminary study","abstract":"[Purpose] The purpose of this study was to identify changes in pulmonary function and pulmonary strength according to time of day. [Subjects and Methods] The subjects were 20 healthy adults who had no cardiopulmonary-related diseases. Pulmonary function and pulmonary strength tests were performed on the same subjects at 9:00 am, 1:00 pm, and 5:00 pm. The pulmonary function tests included forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and forced expiratory flow between 25 and 75% of vital capacity (FEF25-75%). Pulmonary strength tests assessed maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP). [Results] FEV1 showed statistically significant differences according to time of day. Other pulmonary function and pulmonary strength tests revealed no statistical differences in diurnal variations. [Conclusion] Our findings indicate that pulmonary function and pulmonary strength tests should be assessed considering the time of day and the morning dip phenomenon.","is_dataset_classified":null,"base_score":1.791759469228055,"endowment":1.791759469228055,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"25642028","pmcid":"PMC4305559","openalex_id":"https://openalex.org/W2059473352","authors":[],"funders":[],"total_grants":0,"fwci":0.1444,"citation_percentile":0.48010437,"influential_citations":0,"citation_trend":[{"year":2015,"count":1},{"year":2021,"count":1},{"year":2022,"count":1},{"year":2024,"count":2}],"oa_status":"gold","license":"cc-by-nc-nd","oa_locations":[{"url":"https://www.jstage.jst.go.jp/article/jpts/27/1/27_jpts-2014-299/_pdf","host_type":"journal"},{"url":"https://www.jstage.jst.go.jp/article/jpts/27/1/27_jpts-2014-299/_pdf","host_type":"publisher"},{"url":"https://doi.org/10.1589/jpts.27.19","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/25642028","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/4305559","host_type":"repository"},{"url":"https://europepmc.org/articles/PMC4305559","host_type":"Europe_PMC"},{"url":"https://europepmc.org/articles/PMC4305559?pdf=render","host_type":"Europe_PMC"}],"fields_of_study":["Circadian rhythm and melatonin","Climate Change and Health Impacts","Psychological and Temporal Perspectives Research"],"mesh_terms":[],"keywords":["Medicine","Pulmonary function testing","Vital capacity","Morning","Cardiology","Internal medicine","Lung function","Lung","Diffusing capacity","Diurnal variations","Breathing","Time Of Day"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Good health and well-being"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-30T06:56:00.069015Z","pmid":null,"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":[]}