{"created":"2021-03-01T06:06:25.367146+00:00","id":2697,"links":{},"metadata":{"_buckets":{"deposit":"8dc03e83-e35f-4653-9bd2-973a3316aa26"},"_deposit":{"id":"2697","owners":[],"pid":{"revision_id":0,"type":"depid","value":"2697"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00002697","sets":["453:454","468:469:470"]},"item_5_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"EVALUATION OF MUSCLE FATIGUE FOR PREVENTING OVERTRANING"}]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2000-06","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"234","bibliographicPageStart":"225","bibliographicVolumeNumber":"15","bibliographic_titles":[{"bibliographic_title":"バイオメカニズム"},{"bibliographic_title":"バイオメカニズム","bibliographic_titleLang":"en"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Myoelectric (ME) signals are useful for estimating muscle fatigue, but the estimation of fatigue in the field is difficult. Fatigue is related not only to the neuromusclular system but also to the　cardiorespiratory　system. We　studied　a　method　of　evaluating　muscle　fatigue　using　a　superimposed　M　wave（SM　wave）and　background　activity　at　several contraction　levels．　The SM　wave　is　the　electrically　elicited　M　wave　superimposed　on　a　voluntary contraction．　We　estimated　the　mean　power　frequency（MPF）of　background　activity　and　the　instantaneous　frequency（IF）at　the first　peak　of　the　SM　wave．　The　MPF and　IF were　uncorrelated，　or　sometimes　showed negative　correlation，　during　low-level　contractions．　At　high-level contractions，　however，　MPF and　IF　were　closely　correlated　at the　beginning and　then　became　uncorrelated　as　muscle fatigue progressed. The　samples｛mpf, ifs｝were classified into　two　groups，　G1 and G2, depending on　the　features　between　two　contraction　phases： muscle　force　sustaining　phase，　and　degeneration phase. Hence　the　purpose　of　this　study　was　to　expand our　method　of fatigue estimation　in　the field, based on　results　at　different　contraction　levels. The　use　of　low－level　contractions　seems　suitable in field assessment. Two　healthy　male　subjects（22　years　old）ran on a treadmill　for　three　consecutive　days．　On　the first　day，　the　running　speed　was　7.5km/h: on the second　day，　an　incline　of　4.5 degrees　was　added； and　on　the　third　day，　an　incline　of 9 degrees　was used．　We　measured　5　minutes of　biosignals　at　30% of maximum voluntary contraction (MVC) during　the　endurance　period　before　and　after exercise． Each subject　was　seated　in　a　chair，　with a force　transducer　attached　to　the　instep　of　the foot．　We fixed a　pair　of　stimulation　pads　on　the motor　point　area　and　adjusted　the　stimulation levels　to obtain the　highest　superimposed　M wave．　We　measured　heart　rate，　force　output, and　ME　signals　from　the　tibialis　anterior　muscle． The MPF-IF　pattern　of　the　first　day　was　the same　as　those　at　low-level　contractions．　On　the third　day，　however，　they　showed　features　of muscle　fatigue　like　those　at　high-level　contractions．　This　change　in　the　MPF-IF　patterns　was probably　correlated　with　the　accumulation　of muscle　fatigue　and　agreed　with　subjective reports．　Furthermore，　the　spectrum　analysis　of heart　rate　variability　showed　augmented　autonomic　nervous　activity　on　the　third day：increase in　frequencies　and　decrease　in　amplitudes　of　the low-and　high-frequency　components.　Our　method　is，　therefore，　effective　for　assessing　muscle fatigue　quantitatively　and　has　potential　for evaluating fatigue from local muscular　fatigue．","subitem_description_type":"Abstract"}]},"item_5_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"38533","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ichinoseki, Noriko"}]},{"nameIdentifiers":[{"nameIdentifier":"38534","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kiryu, Tohru"}]},{"nameIdentifiers":[{"nameIdentifier":"38535","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Sugimoto, Hideo"}]},{"nameIdentifiers":[{"nameIdentifier":"38536","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Saitoh, Yoshiaki"}]}]},"item_5_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"バイオメカニズム学会"}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"バイオメカニズム学会"}]},"item_5_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10286188","subitem_source_identifier_type":"NCID"}]},"item_5_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13487116","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"一関, 紀子"}],"nameIdentifiers":[{"nameIdentifier":"38529","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"木竜, 徹"}],"nameIdentifiers":[{"nameIdentifier":"38530","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"杉本, 英夫"}],"nameIdentifiers":[{"nameIdentifier":"38531","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"斉藤, 義明"}],"nameIdentifiers":[{"nameIdentifier":"38532","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-07-29"}],"displaytype":"detail","filename":"ZR_15_225-234.pdf","filesize":[{"value":"862.7 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ZR_15_225-234.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/2697/files/ZR_15_225-234.pdf"},"version_id":"a11d6e85-df39-4b62-b1d9-ef89744889d2"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"オーバートレーニング予防を目的とした筋疲労度評価法","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"オーバートレーニング予防を目的とした筋疲労度評価法"},{"subitem_title":"オーバートレーニング予防を目的とした筋疲労度評価法","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["454","470"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-04-04"},"publish_date":"2012-04-04","publish_status":"0","recid":"2697","relation_version_is_last":true,"title":["オーバートレーニング予防を目的とした筋疲労度評価法"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:35:55.337609+00:00"}