Table 1.  Summary of some physical signs and EMG parameters for the exercised arm. Data are means (±SE).
 

DAY 1
PRE

DAY 1 POST

DAY 2

DAY 3

DAY 4

DAY 5

DAY 6

DAY 7

ROM (deg) †

156 (3)

147 (4) *

147 (4)*

148 (4)

149 (4)*

151 (3)

152 (3) *

153 (3)

CIR (cm) †

25.3 (.6)

25.6 (.5)

25.8 (.6)*

25.9 (.6)*

25.8 (.6)*

26.1 (.5)*

26.1 (.6) *

25.9 (.6)*

SOR †

1.0 (.0)

1.7 (.3)*

3.0 (.3)*

3.4 (.5) *

3.0 (.4)*

2.4 (.4)*

1.7 (.3) *

1.5 (.2)

MDF IC50 slope
(β1; Hz·s-1)

-.55 (.06)

-.62 (.08)

-.81 (.01)

-.57 (.08)

-.41 (.11)

-.42 (.08)

-.45 (.08)

-.59 (.04)

MDF IC80 slope
(β1; Hz·s-1)

-.90 (.16)

-.54 (.09)*

-.89 (.10)

-.68 (.15)

-.65 (.11)

-.57 (.09)

-.69 (.10)

-.72 (.11)

RMS IC50 slope (β1)

011 (.005) .013 (.005)

.005 (.004)*

 .002 (.003)*

-.003 (.004)

-.001 (.002)*

.004 (.002)

.002 (.002)*

RMS IC80 slope (β1)

.017 (.009)

 .004 (.005)

.001 (.002)

.008 (.005)

.010 (.004)

.004 (.005)

-.001 (.006)

.005 (.004)
Note: SOR refers to each subject’s perception of muscle soreness while arm was actively extended. ROM refers to active elbow range of motion. CIR refers to arm circumference at 8-cm above elbow. CIR at all anthropometrical landmarks (e.g. 4, 6, and 10-cm above elbow) followed a similar pattern, therefore, data was only presented from CIR at 8-cm.  MDF refers to EMG median frequency. Derivation of regression intercept (β0) and slope (β1) are described in the text. † indicates a significant interaction between main effects of arms × time (days); * denotes significant (p<0.05) differences between day 1 pre-EE and other days.