Int J Sports Med 2019; 40(13): 871-875
DOI: 10.1055/a-0975-9313
Orthopedics & Biomechanics
© Georg Thieme Verlag KG Stuttgart · New York

Effects of Interrupting Sitting with Use of a Treadmill Desk Versus Prolonged Sitting on Postural Stability

Authors

  • Laura H. Charalambous

    1   Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, United Kingdom of Great Britain and Northern Ireland
  • Rachael B. Champion

    1   Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, United Kingdom of Great Britain and Northern Ireland
  • Lindsey R. Smith

    1   Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, United Kingdom of Great Britain and Northern Ireland
  • Andrew C. S. Mitchell

    1   Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, United Kingdom of Great Britain and Northern Ireland
  • Daniel P. Bailey

    1   Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, United Kingdom of Great Britain and Northern Ireland
Further Information

Publication History

Publication Date:
07 October 2019 (online)

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Abstract

High amounts of sitting increase the risk of non-communicable disease and mortality. Treadmill desks make it possible to reduce sitting during the desk-based workerʼs day. This study investigated the acute effect on postural stability of interrupting prolonged sitting with an accumulated 2-h of light-intensity treadmill desk walking. Twenty-one sedentary adults participated in this randomized acute crossover trial, with two 6.5 h conditions: 1) uninterrupted sitting and 2) interrupted sitting with accumulated 2 h light-intensity treadmill desk walking. Pre- and post-condition, participants performed four postural stability tests on a pressure plate (bipedal and unipedal standing stance, eyes open and eyes closed). Anteroposterior center of pressure amplitude showed a significant condition x time interaction in bipedal eyes closed (F(1,20)=4.62, p=0.046) and unipedal eyes open (F(1,20)=9.42, p=0.006) tests, and mediolateral center of pressure amplitude in bipedal eyes closed (F(1,20)=6.12, p=0.023) and bipedal eyes open (F(1,12)=5.55, p=0.029) tests. In the significant interactions, amplitude increased pre to post condition in the uninterrupted sitting condition. The accumulated 2 h light-intensity treadmill desk walking ameliorated the negative effect of 6.5 h prolonged sitting on postural sway, supporting workplace treadmill desk use.