Does orthotics use improve comfort, speed and injury rate during running? Preliminary analysis of a randomised control trial

Table 1 Basic demographic information for participants included in preliminary analysis

	Orthotic group (%)	Control (no orthotic) group (%)	Total (%)
Sex
Male	13 (56.5)	16 (66.7)	29 (61.7)
Female	10 (43.5)	8 (33.4)	18 (38.3)
Age (years)
< 20	1 (4.3)	0 (0)	1 (2.1)
20-29	1 (4.3)	3 (12.5)	4 (8.5)
30-39	6 (26)	9 (37.5)	15 (31.9)
40-49	10 (43.5)	10 (41.7)	20 (42.6)
50-59	3 (13)	1 (4.2)	4 (8.5)
60-69	2 (8.7)	1 (4.2)	3 (6.4)
Total	23	24	47

Table 2 Data on all primary outcomes for both groups

	Intervention group	Control group	Mean difference (95%CI)	P value
Comfort	8.06 ± 1.41	6.96 ± 2.03	1.10 (0.81 to 1.40)	< 0.0001
Injury rate	0.70 ± 1.01	1.21 ± 1.53	-0.51 (-1.28 to 0.25)	0.18
Running speed (miles per hour)	6.27 ± 1.03	6.00 ± 1.54	0.28 (0.06 to 0.50)	0.013

Values for the intervention group and control group are expressed as mean ± standard deviation. Statistical analysis used P values from unpaired two-tailed t-tests with Welch's correction. Significant difference was considered if P < 0.05. CI: Confidence interval. Injury rate: Number of injuries reported per participant over the 8-wk study period.