TABLE 7.
Association between physical fitness and musculoskeletal discomfort in firefighters.
| Univariate models | Multivariate models | ||||||
|---|---|---|---|---|---|---|---|
| Model 1 | Model 2 a | Model 3b | |||||
| OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | ||
| Exploratory variable: abVO2max (L•min) | |||||||
| Musculoskeletal discomfort | 2.10 (0.92, 4.79) | 0.077 | — | — | — | — | |
| Lower back discomfort | 2.52 (0.96, 6.67) | 0.062 | — | — | — | — | |
| Exploratory variable: grip strength (kg) | |||||||
| Shoulder discomfort | 1.02 (0.99, 1.04) | 0.075 | — | — | — | — | |
| Thigh discomfort | 1.02 (0.99, 1.04) | 0.249 | — | — | — | — | |
| Exploratory variable: push-ups (rpm) | |||||||
| Neck discomfort | 1.03 (1.00, 1.06) | 0.039* | 1.04 (1.01, 1.07) | 0.014* | 1.04 (1.01, 1.08) | 0.011* | |
| Shoulder discomfort | 1.02 (0.99, 1.05) | 0.094 | — | — | — | — | |
| Upper back discomfort | 1.03 (0.99, 1.06) | 0.074 | — | — | — | — | |
| Elbow discomfort | 1.04 (1.00, 1.07) | 0.031* | 1.05 (1.01, 1.08) | 0.019** | 1.05 (0.99, 1.09) | 0.016* | |
| Wrist and hand discomfort | 1.05 (1.02, 1.08) | 0.002** | 1.06 (1.02, 1.09) | 0.001** | 1.06 (1.00, 1.09) | <0.001 | |
| Hip discomfort | 1.03 (0.99, 1.07) | 0.088 | — | — | — | — | |
| Thigh discomfort | 1.05 (1.01, 1.09) | 0.007** | 1.06 (1.02, 1.11) | 0.005** | 1.07 (1.03, 1.12) | 0.002** | |
| Ankle and foot discomfort | 1.03 (0.99, 1.06) | 0.790 | — | — | — | — | |
| Exploratory variable: sit-ups (rpm) | |||||||
| Shoulder discomfort | 1.03 (0.99, 1.06) | 0.091 | — | — | — | — | |
| Upper back discomfort | 1.05 (1.00, 1.09) | 0.045* | 1.04 (0.99, 1.09) | 0.143 | 1.04 (0.99, 1.09) | 0.135 | |
| Wrist and hand discomfort | 1.04 (0.99, 1.08) | 0.055 | — | — | |||
| Thigh discomfort | 1.07 (1.01, 1.12) | 0.013* | 1.09 (1.03, 1.51) | 0.003** | 1.08 (1.02, 1.14) | 0.005** | |
| Exploratory variable: sit-and-reach (cm) | |||||||
| Neck discomfort | 0.96 (0.924, 1.00) | 0.060 | — | — | — | — | |
| Elbow discomfort | 0.96 (0.92, 1.01) | 0.090 | — | — | — | — | |
| Thigh discomfort | 0.95 (0.903, 1.00) | 0.058 | — | — | — | — | |
Note: * indicates statistical significance <0.05; ** indicates statistical significance <0.01.
a—covariates adjusted for age, sex, body mass index, and weekly MET minutes; b—covariates adjusted for years of experience, sex, body mass index, and weekly MET minutes; L•min—liters per minute; mL•kg•min—milliliters per minute; kg—kilogram; rpm—repetitions per minute.