To investigate the cross-sectional associations between musculoskeletal pain experience and measures of pressure and cold pain sensitivity in young adults from the Western Australian Pregnancy Cohort (Raine) Study.
In total, 917 participants were eligible for analysis if they provided data pertaining to musculoskeletal pain status at the 22-year follow-up and had data for at least 1 valid pain sensitivity test. Standardized protocols were used to assess pressure pain threshold (4 sites: lumbar spine, tibialis anterior, upper trapezius, and wrist) and cold pain threshold (wrist). Four pain experience groups (“No pain” [n=562, 61.3%], “Low” [n=84, 9.2%], “Medium” [n=147, 16.0%], “High” [n=124, 13.5%]) were determined by latent class analysis using parameters of pain chronicity, frequency, intensity, and number of pain areas. Variables considered as confounders included sex, age, ethnicity, waist-hip ratio, psychological symptoms, sleep quality, physical activity, sedentary behavior, smoking, and income.
There were no associations between pain experience and pressure pain sensitivity after adjusting for confounders. The “Medium” and “High” pain experience groups demonstrated heightened cold pain sensitivity compared with the “No pain” group (P=0.023), adjusted for sex and smoking.
This study provides the most extensive investigation of the relationship between musculoskeletal pain experience and pressure and cold pain sensitivity in young adults. Heightened cold pain sensitivity in those classified as “Medium” and “High” pain experience may suggest altered nociceptive processing and has implications for clinical management.
*School of Physiotherapy and Exercise Science, Curtin University, Perth, WA
†RECOVER Injury Research Centre, NHMRC Centre of Research Excellence in Road Traffic Injury, The University of Queensland, Herston, Qld, Australia
The Raine Study has been supported by the National Health and Medical Research Council, Canberra, ACT, Australia, with additional funding provided by the University of Western Australia, Perth, WA, Australia; Raine Medical Research Foundation, Perth, WA, Australia; Telethon Kids Institute, Perth, WA, Australia; Curtin University, Perth, WA, Australia; Edith Cowan University, Perth, WA, Australia; Women and Infants Research Foundation, Murdoch University, Perth, WA, Australia; and The University of Notre Dame, Perth, WA, Australia. The authors declare no conflict of interest.
Reprints: Robert Waller, MSc, School of Physiotherapy and Exercise Science, Building 408, Level 3, Curtin University, G.P.O. Box U1987, Perth, WA 6845, Australia (e-mail: firstname.lastname@example.org).
Received March 15, 2018
Received in revised form August 20, 2018
Accepted August 30, 2018