Fig. 4

Forest plot of meta-analysis comparing DCF training with strength-endurance training on the effects of cervical muscle strength. The mean and standard deviation (SD) are changes in values between baseline and post intervention measures. Data from Falla et al. 2006 [29] was used to impute the SD values for O’Leary et al. 2007 [36] and for O’Leary et al. 2012 [37] as described by Cochrane handbook chapter 16.1.3.2