{"doi":"10.7600/jpfsm.14.121","title":"Longitudinal changes in physical activity of early-stage breast cancer survivors in Japan during and after COVID-19 lockdown","abstract":null,"journal":"The Journal of Physical Fitness and Sports Medicine","year":2025,"id":638301,"datarank":0.10397207708399181,"base_score":0.6931471805599453,"endowment":0.6931471805599453,"self_citation_contribution":0.10397207708399181,"citation_network_contribution":0.0,"self_endowment_contribution":0.10397207708399181,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":1,"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":545403,"name":"Yuta Kojima","orcid":"0000-0003-2352-5419","position":1,"is_corresponding":false},{"id":1657791,"name":"Katsunori Tsuji","orcid":null,"position":2,"is_corresponding":false},{"id":227464,"name":"Thomas Svensson","orcid":"0000-0002-9190-2979","position":3,"is_corresponding":false},{"id":1657793,"name":"Akihiko Suto","orcid":null,"position":4,"is_corresponding":false},{"id":317142,"name":"Eisuke Ochi","orcid":"0000-0002-2497-0250","position":5,"is_corresponding":false},{"id":1657789,"name":"Ren Yulong","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Longitudinal changes in physical activity of early-stage breast cancer survivors in Japan during and after COVID-19 lockdown","abstract":"This study investigated the changes in the physical activity of Japanese breast cancer survivors during and after the state of emergency declaration (SOED) due to the spread of COVID-19. Participants were survivors of stage I-IIa breast cancer diagnosed between the ages of 18 and 60 years who wore a wearable device (Fitbit Versa) before and after the SOED period. Outcomes included steps per day on weekdays and weekend days and holidays, sedentary time, and time spent engaged in various levels of physical activity. Seventeen participants were included in the analysis. Steps per day decreased significantly from 8450 ± 905 steps before the SOED to 6085 ± 526 steps during, and 6871 ± 776 steps after the SOED on weekdays (p < 0.05). No difference in sedentary time was observed before, during or after the SOED period on weekdays or weekend days, or holidays. Time spent engaged in light physical activity was significantly shorter on weekdays, decreasing from 251 ± 15 minutes before the SOED to 216 ± 15 minutes during, and 223 ± 16 minutes after the SOED (p < 0.05). Time spent engaged in moderate to vigorous physical activity was significantly shorter on weekdays before the SOED at 154 ± 39 minutes, dropping to 101 ± 29 minutes during, and increasing to 136 ± 38 minutes after the SOED (p < 0.05). It was concluded that participants spent less time engaged in all levels of physical activity on weekdays during the SOED. Therefore, during lockdowns, it is important to maintain higher intensities of physical activity on weekdays. Because steps and time spent engaged in light physical activity did not recover after the SOED period, breast cancer survivors need to focus on these parameters after lockdowns while also paying attention to infection prevention.","is_dataset_classified":null,"base_score":0.6931471805599453,"endowment":0.6931471805599453,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19767382","pmcid":null,"openalex_id":"https://openalex.org/W4414106907","authors":[],"funders":[],"total_grants":0,"fwci":0.6355,"citation_percentile":0.73811765,"influential_citations":0,"citation_trend":[{"year":2026,"count":1}],"oa_status":"gold","license":"cc-by-nc-nd","oa_locations":[{"url":"https://www.jstage.jst.go.jp/article/jpfsm/14/5/14_121/_pdf","host_type":"journal"},{"url":"https://www.jstage.jst.go.jp/article/jpfsm/14/5/14_121/_pdf","host_type":"publisher"},{"url":"https://doi.org/10.7600/jpfsm.14.121","host_type":"journal"},{"url":"https://doaj.org/article/721f00431e8a442b8512649e49e44214","host_type":"repository"},{"url":"https://lup.lub.lu.se/record/bcd22df2-1fdf-4646-bbaf-d8c5a3c120f8","host_type":"repository"}],"fields_of_study":["Cancer survivorship and care","COVID-19 and healthcare impacts"],"mesh_terms":[],"keywords":["Physical activity","Breast cancer","Sedentary behavior","Names of the days of the week","Longitudinal study","Coronavirus disease 2019 (COVID-19)","Sedentary lifestyle"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-06T20:27:31.393286Z","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":[]}