Table 1.

Demographic characteristics of study participants included in data analysis (N = 104).

Variable			f (%)
Gender	Male		59 (56.7)
	Female		45 (43.3)
Median age category			31–40 years
Height (m) [mean (SD)]			1.72 (0.1)
Mass (kg) [mean (SD)]			71.4 (13.1)
Body mass index (kg/m2) [mean (SD)]			24.0 (3.5)
Smoking status	Never smoked		91 (87.5)
	Former Smoker		12 (11.5)
	Current Smoker		1 (1.0)
Race	Half-marathon		68 (65.4)
	Marathon		25 (24.0)
	Other		11 (10.6)
Years of running	Started this year		9 (8.6)
	1–5 years		37 (35.6)
	6–10 years		27 (26.0)
	11+ years		31 (29.8)
Average miles per week of running over a year	0–10 miles		26 (25.0)
	11–20 miles		41 (39.4)
	21–30 miles		23 (22.1)
	> 30 miles		14 (13.5)
Ultrasound abnormality (left or right)	Achilles tendon	Yes	25 (24.0)
		No	79 (76.0)
	Patellar tendon	Yes	24 (23.1)
		No	80 (76.9)
Post-race pain at any time point	Achilles tendon	Yes	17 (16.4)
		No	87 (83.6)
	Patellar tendon	Yes	26 (25.0)
		No	78 (75.0)