Research Article
Age-Related Decline in Cardiorespiratory Fitness among Career Firefighters: Modification by Physical Activity and Adiposity
Table 2
Linear regression model describing Cardiorespiratory fitness (maximal achieved METS) (in randomly assigned training set ).
| Variable | Parameter estimate | Standard error | value |
| Age | −0.05886 | 0.01031 | <0.0001 | BMI | −0.21131 | 0.01994 | <0.0001 | Total weekly duration | 0.00845 | 0.00232 | 0.0003 | Total weekly duration squared | −0.00001297 | 0.000000569 | 0.0233 | Duration of weight lifting | 0.18937 | 0.06393 | 0.0032 | Intensity of exercise | 0.21331 | 0.12362 | 0.0878 |
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