{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,22]],"date-time":"2025-08-22T22:40:03Z","timestamp":1755902403263,"version":"3.44.0"},"reference-count":35,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:sec>\n            <jats:title>Background:<\/jats:title>\n            <jats:p>Previous studies show that people with lower limb amputation (LLA) have a sedentary lifestyle, reduced walking capacity, and low cardiorespiratory fitness (VO<jats:sub>2<\/jats:sub>peak). There is, however, no knowledge on the relationship between cardiorespiratory fitness and objectively measured level of physical activity in daily life.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Objectives:<\/jats:title>\n            <jats:p>To investigate the relationship between upper-body VO<jats:sub>2<\/jats:sub>peak, physical activity levels, and walking capacity in persons with LLA.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Study design:<\/jats:title>\n            <jats:p>Correlational and descriptive study.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods:<\/jats:title>\n            <jats:p>Fourteen participants with LLA performed an assessment of VO<jats:sub>2<\/jats:sub>peak on an arm-crank ergometer and walking capacity (preferred walking speed and 2-minute walking test). Level of physical activity was measured over 7 days with a step activity monitor (number of steps; sedentary time; and proportion of low-intensity, moderate-intensity, high-intensity, and peak-intensity activity level).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results:<\/jats:title>\n            <jats:p>VO<jats:sub>2<\/jats:sub>peak correlated significantly with number of steps per day (r = 0.696, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.006), sedentary time (r = \u22120.618, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.019), high-intensity activity level (r = 0.769, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.001), and peak-intensity activity level (r = 0.674, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.008). After correcting for age, correlations were still large and significant. Large correlations were also found between VO<jats:sub>2<\/jats:sub>peak, preferred walking speed (r = 0.586, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.027), and 2-minute walking test (r = 0.649, <jats:italic toggle=\"yes\">p<\/jats:italic> = 0.012).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions:<\/jats:title>\n            <jats:p>We provide the first evidence of the strong relationships between upper-body VO<jats:sub>2<\/jats:sub>peak, sedentary behavior, high-intensity activity level, and walking capacity in persons with LLA. Further research is needed to investigate the potential effect of upper-body cardiorespiratory fitness on the level of activity in daily life, or vice versa.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1097\/pxr.0000000000000024","type":"journal-article","created":{"date-parts":[[2021,7,16]],"date-time":"2021-07-16T11:00:25Z","timestamp":1626433225000},"page":"343-349","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Relationship between level of daily activity and upper-body aerobic capacity in adults with a lower limb amputation"],"prefix":"10.1097","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8474-6157","authenticated-orcid":false,"given":"Mirjam","family":"Mellema","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway"},{"name":"Faculty of Technology, Art and Design, Oslo Metropolitan University, Oslo, 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