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Scandinavian Journal of Pain

Official Journal of the Scandinavian Association for the Study of Pain

Editor-in-Chief: Breivik, Harald


CiteScore 2018: 0.85

SCImago Journal Rank (SJR) 2018: 0.494
Source Normalized Impact per Paper (SNIP) 2018: 0.427

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1877-8879
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Volume 18, Issue 4

Issues

Evaluation of implicit associations between back posture and safety of bending and lifting in people without pain

JP. Caneiro
  • Corresponding author
  • School of Physiotherapy and Exercise Science, Curtin University, Bentley, Australia
  • Body Logic Physiotherapy Clinic, 215 Nicholson Road, Shenton Park, WA 6008, Australia, Phone: +61(08)9381 7940, +61(08)433 803 683, Fax: +61(08)9381 7941, E-mail:
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Peter O’Sullivan
  • School of Physiotherapy and Exercise Science, Curtin University, Bentley, Australia
  • Body Logic Physiotherapy Clinic, Shenton Park, Australia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Ottmar V. Lipp / Lara Mitchinson
  • School of Physiotherapy and Exercise Science, Curtin University, Bentley, Australia
  • Body Logic Physiotherapy Clinic, Shenton Park, Australia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Nicolai Oeveraas / Priyanka Bhalvani / Richard Abrugiato / Sean Thorkildsen / Anne Smith
Published Online: 2018-07-09 | DOI: https://doi.org/10.1515/sjpain-2018-0056

Abstract

Background and aims

Despite lack of support from recent in vivo studies, bending and lifting (especially with a round-back posture) are perceived as dangerous to the back. In light of this view, it has been proposed that pain-free people may hold a common implicit belief that is congruent with the idea that bending and lifting with a round-back represents danger to a person’s back, however this has not been evaluated. The aims of this study were: (1) to evaluate implicit associations between back posture and safety related to bending and lifting in pain-free people; (2) to explore correlations between the implicit measure and explicit measures of back beliefs, fear of movement and safety of bending; (3) to investigate self-reported qualitative appraisal of safe lifting.

Methods

Exploratory cross-sectional study including 67 pain-free participants (no pain, or average pain ≤3/10 for less than one week over the previous 12 months) (52% male), who completed an online survey containing demographic data and self-reported measures of: fear of movement (Tampa Scale for Kinesiophobia for General population – TSK-G), back beliefs (Back Pain Attitudes Questionnaire BackPAQ), and bending beliefs (Bending Safety Belief – BSB – a pictorial scale with images of a person bending/lifting with round and straight back postures). Implicit associations between back posture and safety related to bending and lifting were evaluated with the Implicit Association Test (IAT). A qualitative assessment of descriptions of safe lifting was performed.

Results

An implicit association between “danger” and “round-back” bending/lifting was evident in all participants (IATD-score=0.65 (SD=0.45; 95% CI [0.54, 0.76]). Participants’ profile indicated high fear of movement, unhelpful back beliefs, and perceived danger to round-back bending and lifting (BSBThermometer: 5.2 (SD=3.8; 95% CI [4.26, 6.13] range −10 to 10; t(67)=11.09, p<0.001). There was a moderate correlation between IAT and BSBThermometer (r=0.38, 95% CI [0.16, 0.62]). There were weaker and non-statistically significant correlations between IAT and TSK-G (r=0.28, 95% CI [−0.02, 0.47]), and between IAT and BackPAQDanger (r=0.21, 95% CI [−0.03, 0.45]). Qualitative assessment of safe lifting descriptions indicated that keeping a “straight back” and “squatting” when lifting were the most common themes.

Conclusions

Pain-free people displayed an implicit bias towards bending and lifting with a “round-back” as dangerous. Our findings support the idea that pain-free people may have a pre-existing belief about lifting, that the back is in danger when rounded. Research to evaluate the relationship between this implicit bias and lifting behaviour is indicated.

Implications

The findings of this study may have implications for ergonomic guidelines and public health information related to bending and lifting back postures. Additionally, clinicians may need to be aware of this common belief, as this may be reflected in how a person responds when they experience pain.

This article offers supplementary material which is provided at the end of the article.

Keywords: implicit beliefs; explicit beliefs; pain-free people; back posture; bending; lifting

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About the article

Received: 2018-03-13

Revised: 2018-06-21

Accepted: 2018-06-21

Published Online: 2018-07-09

Published in Print: 2018-10-25


Authors’ Statements

Research funding: JP. Caneiro is supported by an Australian Postgraduate Award (APA) and Curtin University Postgraduate (CUPS) Scholarships.

Conflict of interest: Peter O’Sullivan receives speaker fees for workshops on pain management. All the other authors declare no conflicts of interest.

Informed consent: All participants provided informed consent, and were informed that they could withdraw from the study at any time.

Ethics approval: This study was approved by Curtin University’s Human Research Ethics Committee prior to study commencement (HRE2017-0500).


Citation Information: Scandinavian Journal of Pain, Volume 18, Issue 4, Pages 719–728, ISSN (Online) 1877-8879, ISSN (Print) 1877-8860, DOI: https://doi.org/10.1515/sjpain-2018-0056.

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