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For adults with mild cognitive impairment (MCI), the relationship between physical activity levels and cognitive performance is unknown. This cross\u2010sectional study aimed to determine if cognitive performance [as measured by the Montreal Cognitive Assessment (MoCA)] of people living in the community with MCI is associated with their physical activity levels or sedentary behaviour.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>ActivPAL\u2122 accelerometers were used to objectively measure physical activity and sedentary behaviour for seven full days. Cognitive performance was measured using the MoCA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Consumer and Community Involvement<\/jats:title><jats:p>No involvement other than as research participants<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eighty\u2010two participants from the Balance on the Brain randomised controlled trial were included. Most participants were retired (88%), with 33 (40%) reporting a fall in the last year. The median MoCA score was 24 (IQR 22\u201326). Participants achieved a mean of 6296 (\u00b12420) steps per day and were sedentary for 10.6 (\u00b12) hours per day. The only physical activity outcomes that had a fair, positive correlation were moderate\u2010 to vigorous\u2010intensity physical activity measures of total stepping time and total number of steps (with a cadence of \u2265100 steps\/min) with the orientation MoCA domain score (<jats:italic>r<\/jats:italic>(82)\u2009=\u00a00.36, <jats:italic>p<\/jats:italic>\u00a0\u2264\u00a00.001 and <jats:italic>r<\/jats:italic>(82)\u2009=\u00a00.37, <jats:italic>p<\/jats:italic>\u00a0\u2264\u00a00.001, respectively). Higher total sedentary time had a weak, positive correlation with better visuospatial\/executive performance (<jats:italic>r<\/jats:italic>(82)\u2009=\u00a00.23, <jats:italic>p<\/jats:italic>\u00a0=\u20090.041). The orientation outcomes remained significant when analysed in an adjusted logistic regression model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study found that performance in the MoCA orientation domain had a fair\u2010positive correlation with moderate\u2010intensity physical activity (i.e., stepping time and step count with a cadence of \u2265100 steps\/min) as measured by a thigh\u2010worn accelerometer for community\u2010dwelling older adults with MCI. When considering the relationship between cognitive domains and sedentary behaviour, consideration may be needed regarding whether cognitive enhancing activities (such as crosswords and other brain games) are being performed, which may confound this relationship. Further investigation is required to confirm these results.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1440-1630.12944","type":"journal-article","created":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T02:39:23Z","timestamp":1713148763000},"page":"527-539","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Associations between physical activity, sedentary behaviour and cognitive domain performance of people living with mild cognitive impairment in the community"],"prefix":"10.1111","volume":"71","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4042-9269","authenticated-orcid":false,"given":"Jane","family":"Hopkins","sequence":"first","affiliation":[{"name":"School of Allied Health Curtin University  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2446-3814","authenticated-orcid":false,"given":"Joanne","family":"McVeigh","sequence":"additional","affiliation":[{"name":"School of Allied Health Curtin University  Perth Western Australia Australia"},{"name":"School of Physiology, Movement Physiology Laboratory University of Witwatersrand  Johannesburg South Africa"},{"name":"enAble Institute Curtin University  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2191-0308","authenticated-orcid":false,"given":"Keith","family":"Hill","sequence":"additional","affiliation":[{"name":"Rehabilitation Ageing and Independent Living (RAIL) Research Centre Monash University  Frankston Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9097-9037","authenticated-orcid":false,"given":"Kathryn A.","family":"Ellis","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Academic Unit for Psychiatry of Old Age University of Melbourne  Parkville Victoria Australia"},{"name":"School of Psychological Sciences University of Melbourne  Parkville Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0461-681X","authenticated-orcid":false,"given":"Angela","family":"Jacques","sequence":"additional","affiliation":[{"name":"School of Allied Health Curtin University  Perth Western Australia Australia"},{"name":"Institute for Health Research University of Notre Dame Australia  Fremantle Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6470-8305","authenticated-orcid":false,"given":"Elissa","family":"Burton","sequence":"additional","affiliation":[{"name":"School of Allied Health Curtin University  Perth Western Australia Australia"},{"name":"enAble Institute Curtin University  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,4,14]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.4236\/nm.2010.12006"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10072-021-05142-0"},{"key":"e_1_2_11_4_1","unstructured":"Australian Commission on Safety and Quality in Health Care. 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