Occupational physical behaviors and knee pain among eldercare workers: A prospective accelerometer study.

Area of Science:

• Occupational health
• Biomechanics
• Epidemiology

Background:

• Knee pain is a common issue among eldercare workers due to demanding physical tasks.
• Understanding the role of occupational physical behaviors in knee pain development is crucial for prevention strategies.

Purpose of the Study:

• To investigate the prospective association between accelerometry-measured occupational physical behaviors and knee pain risk in eldercare workers.
• To explore how different physical activity compositions (sedentary, standing, LPA, MVPA) relate to knee pain incidence and intensity.

Main Methods:

• A prospective study involving 377 eldercare workers from 20 Danish nursing homes.
• Occupational physical behaviors were objectively measured using accelerometers over 1-4 workdays.
• Knee pain (intensity and days) was self-reported at baseline and one-year follow-up, with adjustments for confounders.

Main Results:

• No statistically significant associations were identified between baseline occupational physical behaviors and knee pain at one-year follow-up.
• A non-significant trend indicated that increased occupational moderate-to-vigorous physical activity (MVPA) was associated with a reduced risk of knee pain.
• Sensitivity analyses showed a non-significant trend for decreased knee pain intensity with higher MVPA.

Conclusions:

• Baseline occupational physical behaviors were not significantly associated with knee pain one year later.
• A trend suggests that higher occupational MVPA may be linked to a lower risk of knee pain.
• Larger sample sizes are required to confirm the potential protective effect of occupational MVPA on knee pain.