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Table 2.

Comparison of the integrated area of the muscle activity for both electrodes at the respective vertebral level of the m. multifidus lumborum and the m. longissimus thoracis et lumborum for all dogs when 8% or 12% of the body mass was carried above the mid-trunk versus split up and carried over the two girdles

Manipulation	Multi – T13	Multi – L3	Multi – L6	Long – T13	Long – L3	Long – L6
8%	1.00±0.02	1.07±0.06	1.12±0.10	0.95±0.04	1.31±0.22^{^*}	1.14±0.07^{^*}
	1.05±0.04	1.13±0.08	1.09±0.07	1.05±0.03^{^*}	1.05±0.05	1.18±0.10
12%	1.03±0.04	1.10±0.08^{^*}	1.20±0.14^{^*}	1.04±0.04	1.20±0.20	1.20±0.22^{^*}
	1.06±0.04^{^*}	1.13±0.05^{^*}	1.11±0.10	1.03±0.02^{^*}	0.97±0.07	0.91±0.17

Manipulation	Multi – T13	Multi – L3	Multi – L6	Long – T13	Long – L3	Long – L6
8%	1.00±0.02	1.07±0.06	1.12±0.10	0.95±0.04	1.31±0.22^{^*}	1.14±0.07^{^*}
	1.05±0.04	1.13±0.08	1.09±0.07	1.05±0.03^{^*}	1.05±0.05	1.18±0.10
12%	1.03±0.04	1.10±0.08^{^*}	1.20±0.14^{^*}	1.04±0.04	1.20±0.20	1.20±0.22^{^*}
	1.06±0.04^{^*}	1.13±0.05^{^*}	1.11±0.10	1.03±0.02^{^*}	0.97±0.07	0.91±0.17

Multi, m. multifidus lumborum; Long, m. longissimus thoracis et lumborum

Values are means ± standard error of change. A mean change greater than 1 indicates that the activity was greater when the mass was carried over the mid-trunk

Significant at P<0.05

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