Table 2. Condition vs. Time interaction effects for the main variables comparing the variation among post and pre moments for all the conditions compared to the control.
Variable Post- vs. Pre-test
Time Effect		 ß SE 95% CI
Lower- Upper		 z p
Maximum Range of Motion (cm) MBV vs. Control 0.235 0.641 -1.040 – 1.507 0.366 0.715
MB vs. Control -0.278 0.643 -1.550 – 0.998 -0.433 0.666
FR vs. Control -0.141 0.636 -1.400 – 1.120 -0.222 0.825
Mean Range of Motion (cm) MBV vs. Control -0.859 0.541 -1.933 – 0.215 -1.587 0.116
MB vs. Control -0.416 0.543 -1.494 – 0.662 -0.765 0.446
FR vs. Control -0.593 0.539 -1.662 – 0.447 -1.099 0.274
1st Fastest Repetition (m·s-1) MBV vs. Control -0.024 0.052 -0.128 – 0.080 -0.459 0.647
MB vs. Control -0.025 0.053 -0.129 – 0.079 -0.478 0.634
FR vs. Control -0.024 0.053 -0.128 – 0.080 -0.457 0.649
1st Fastest Repetition Quadriceps Maximum RMS (µV) MBV vs. Control 0.053 0.041 -0.028 – 0.133 1.294 0.199
MB vs. Control -0.054 0.044 -0.142 – 0.034 -1.218 0.226
FR vs. Control -0.045 0.043 -0.131 – 0.042 -1.027 0.307
1st Fastest Repetition Hamstrings Maximum RMS (µV) MBV vs. Control 0.145 0.061 0.024 – 0.266 2.373 0.020
MB vs. Control 0.100 0.061 -0.021 – 0.221 1.642 0.104
FR vs. Control 0.070 0.061 -0.051 – 0.191 1.154 0.251
2nd Fastest Repetition Maximum Velocity (m·s-1) MBV vs. Control -0.036 0.012 -0.059 – -0.013 -3.106 0.002
MB vs. Control -0.026 0.011 -0.048 – -0.003 -2.221 0.029
FR vs. Control -0.033 0.012 -0.056 – -0.010 -2.873 0.005
2nd Fastest Repetition Quadriceps Maximum RMS (µV) MBV vs. Control 0.036 0.039 -0.040 – 0.113 0.941 0.349
MB vs. Control -0.001 0.042 -0.084 – 0.081 -0.028 0.978
FR vs. Control 0.018 0.042 -0.064 – 0.101 0.438 0.662
2nd Fastest Repetition Hamstrings Maximum RMS (µV) MBV vs. Control -0.002 0.011 -0.023 – 0.019 -0.173 0.863
MB vs. Control 0.006 0.010 -0.014 – 0.025 0.578 0.564
FR vs. Control 0.008 0.010 -0.012 – 0.028 0.762 0.448
3rd Fastest Repetition Maximum Velocity (m·s-1) MBV vs. Control -0.032 0.011 -0.054 – -0.010 -2.885 0.005
MB vs. Control -0.017 0.011 -0.038 – 0.005 -1.522 0.131
FR vs. Control -0.025 0.011 -0.046 – -0.003 -2.244 0.027
3rd Fastest Repetition Quadriceps Maximum RMS (µV) MBV vs. Control 0.075 0.039 -0.002 – 0.153 1.921 0.058
MB vs. Control 0.008 0.040 -0.071 – 0.087 0.206 0.837
FR vs. Control 0.013 0.040 -0.067 – 0.093 0.322 0.748
3rd Fastest Repetition Hamstrings Maximum RMS (µV) MBV vs. Control 0.120 0.061 -0.001 – 0.242 1.962 0.053
MB vs. Control 0.050 0.061 -0.071 – 0.171 0.816 0.416
FR vs. Control 0.033 0.061 -0.089 – 0.154 0.533 0.596
Mean Velocity (m·s-1) MBV vs. Control -0.031 0.010 -0.051 – -0.010 -2.961 0.004
MB vs. Control -0.018 0.010 -0.039 – 0.002 -1.771 0.080
FR vs. Control -0.021 0.010 -0.041 – -0.001 -2.023 0.046
Comparisons in bold indicate significant effects with p < 0.05. Abbreviations: FR = foam roller; MB = massage ball; MBV = massage ball with vibration; β = estimate; SE = standard error; CI = confidence interval; z = statistic for the generalized linear mixed models