Table 2.

Relationship of recreational physical activity to total fecal bile acid concentration^* (N = 735)

Model		β coefficient	95% CI	Predicted total fecal bile acids (μg/mL)†	Model		β coefficient	95% CI	Predicted total fecal bile acids (μg/mL)†
	Minutes of recreational physical activity per day					kJ of recreational energy expenditure per day
Crude					Crude
	< 15 min	ref.	-	275		1st quartile	ref.	-	282
	15 to < 45 min	- 0.265	- 0.444 to - 0.086	211		2nd quartile	- 0.270	- 0.446 to - 0.093	215
	45 to< 105 min	- 0.272	- 0.449 to - 0.095	210		3rd quartile	- 0.338	- 0.515 to - 0.162	201
	≥ 105 min	- 0.358	- 0.536 to - 0.179	192		4th quartile	- 0.399	- 0.576 to - 0.223	189
		Ptrend < 0.001					Ptrend < 0.001
Adjustef‡					Adjusted‡
	< 15 min	ref.	-	301		1st quartile	ref.	-	303
	15 to < 45 min	- 0.237	- 0.414 to - 0.059	238		2nd quartile	- 0.243	- 0.418 to - 0.067	237
	45 to < 105 min	-0.216	- 0.393 to - 0.039	243		3rd quartile	- 0.273	- 0.452 to - 0.094	230
	≥ 105 min	- 0.248	- 0.432 to - 0.065	235		4th quartile	- 0.286	- 0.472 to - 0.100	227
		Ptrend = 0.015					Ptrend = 0.003
Adjusted§					Adjusted§
	< 15 min	ref.	-	284		1st quartile	ref.	-	290
	15 to < 45 min	- 0.200	- 0.376 to - 0.024	233		2nd quartile	- 0.223	- 0.396 to - 0.050	232
	45 to < 105 min	-0.150	- 0.327 to 0.026	245		3rd quartile	- 0.218	- 0.396 to - 0.041	233
	≥ 105 min	-0.190	- 0.372 to - 0.007	235		4th quartile	- 0.235	- 0.420 to - 0.051	229
		Ptrend = 0.082					Ptrend = 0.019

^*Total fecal bile acid concentration, dietary fiber, and BMI are natural log-transformed

^†Calculated for females at median age (68.3 years), dietary fiber (19.4 g), and BMI (26.6 kg/m²)

^‡Adjusted for age and sex

^§Adjusted for all confounders (change β coefficient > 10%): age, sex, dietary fiber, and BMI