Table 5. Changes in abdominal strength and endurance over the course of the study. Data are means (±SD).
Variables Groups Pre-test 4 Week 8 Week
Abdominal Strength (N·m) Stimulation Males 75.5 (27.3) 99.9 (25.4) *# 119.3 (25.0) *#
Females 37.6 (13.6) 51.5 (15.7) * 59.0 (12.7) *#
Overall 56.6 (28.7) 75.8 (32.2) *# 89.2 (36.4) *#
Control Males 78.4 (17.4) 82.2 (16.9) 84.9 (19.1)
Females 41.1 (10.7) 45.6 (8.5) 45.6 (9.8)
Overall 59.7 (23.8) 63.9 (22.9) 65.2 (25.1)
Abdominal Endurance (repetitions) Stimulation Males 39 (20) 61 (40) 80 (53) *#
Females 31 (11) 43 (10) 60 (27) *#
Overall 35 (16) 52 (30) *# 70 (42) *#
Control Males 34 (17) 36 (16) 44 (17)
Females 29 (14) 29 (14) 38 (15)
Overall 32 (15) 32 (14) 41 (16) *
* Significantly different than Pre-test (p<.05)
# Change for the Stimulation group is significantly different than the Control group at the same time point (p<.05)