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Is objectively measured sitting at work associated with low back pain?
A cross sectional study in the DPhacto cohort Objectives: Low-back pain (LBP) is a substantial health challenge due to the risk for long-term sickness absence and early retirement. Several biomechanical exposures at work, including sitting, have been suggested to increase the risk for LBP. The objectives of this study were to determine (i) the extent to which temporal patterns and total amount of objectively measured sitting is associated with LBP intensity and (ii) whether selected modifiers influence these associations. Methods: This cross sectional study uses baseline data from the Danish PHysical...
Pre-existing low-back symptoms impact adversely on sitting time reduction in office workers
Objectives: Initiatives to reduce office-workplace sitting are proliferating, but the impact of pre-existing musculoskeletal symptoms on their effectiveness has not been determined. We assessed the influence of musculoskeletal symptoms on the outcomes of a workplace sitting intervention. Methods: Baseline and 3-month data from a cluster-randomized controlled trial of a workplace sitting intervention (Stand Up Victoria; trial registration number ACTRN12611000742976) were used. Office workers (n = 231) from 14 work teams within one organisation were randomised (by worksite) to a multicomponent program...
Associations of objectively measured sitting and standing with low-back pain intensity
A 6-month follow-up of construction and healthcare workers This study investigated associations between sitting and standing, respectively, and low-back pain with objectively measured exposures for several days and a prospective design. Sitting at work and during full-day is negatively associated with cross-sectional- and prospective low-back pain intensity. This association was seen for the healthcare sector, but not for the construction sector. Source: Lunde, L. K., Koch, M., Knardahl, S., & Veiersted, K. B. (2017). Scandinavian Journal of Work, Environment & Health . http://dx.doi.org...
Evaluating the low back biomechanics of three different office workstations: Seated, standing, and perching
The objective of this study was to evaluate how different workstations may influence physical behavior in office work through motion and how that may affect spinal loads and discomfort. Twenty subjects performed a typing task in three different workstations (seated, standing, and perching) for one hour each. Measures of postural transitions, spinal loads, discomfort, and task performance were assessed in order to understand the effects of workstation interaction over time. Results indicated that standing had the most amount of motion (6–8 shifts/min), followed by perching (3–7 shifts...
Temporal patterns of sitting at work are associated with neck–shoulder pain in blue-collar workers
A cross-sectional analysis of accelerometer data in the DPHACTO study BACKGROUND: Our aim was to examine the extent to which temporal patterns of sitting during occupational work and during leisure-time, assessed using accelerometry, are associated with intense neck-shoulder pain (NSP) in blue-collar workers. METHODS: The population consisted of 659 Danish blue-collar workers. Accelerometers were attached to the thigh, hip, trunk and upper dominant arm to measure sitting time and physical activity across four consecutive days. Temporal sitting patterns were expressed separately for work and leisure...
Impact of a Sit-Stand Workstation on Chronic Low Back Pain
Results of a Randomized Trial Objective: The aim of the study was to determine whether chronic low back pain (LBP) might be attenuated through the introduction of a sit-stand workstation (SSW) in office employees. Methods: Participants were randomized to receive a SSW at the beginning or at the end of a 3-month study period. Participants responded to a short survey at the end of each workday and a comprehensive survey at weeks 1, 6, and 12. Surveys consisted of a modified brief pain inventory and the Roland Morris Disability Questionnaire. Results: Forty-six university employees with self-reported...
Association of objectively measured occupational walking and standing still with low back pain
A cross-sectional study Objectives: This cross-sectional study investigated the association of objectively measured walking and standing still time at work with low back pain (LBP) intensity among blue-collar workers. Design: A cross-sectional study. Methods: 187 workers attached two accelerometers for diurnal standing still and walking measurements, which were categorised using tertiles. Workers' self-reported LBP intensity (scale 0–9) was categorised into low (0–5) and high pain (6–9). Results: Of the 187 workers, 17% reported a high level of LBP. Results of the multi-adjusted...
Association between objectively measured sitting time and neck–shoulder pain among blue-collar workers
Objectives: Prolonged sitting has been suggested as a risk factor for neck–shoulder pain (NSP). Using a cross-sectional design, we investigated the extent to which objectively measured time sitting is associated with NSP among blue-collar workers. Methods: Sitting time was measured during multiple working days on male (n = 118) and female (n = 84) blue-collar workers (n = 202) using triaxial accelerometers (Actigraph) placed on the thigh and trunk. Workers were categorized into having, on average, a low, moderate or high sitting time, with mean values (SD between subjects) of 4.9 (1.0), 7...

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