Table 2.

Comparison of popular portable LLEs.

Research	Weight (kg)	Net Metabolic Cost Reduction (%)	Average Muscle Activities Reduction (%)
			Sum of Soleus	Gluteus Maximus
Panizzolo et al. [10]	0.645	3.3$\pm$3.0	\	\
Mooney et al. [12]	4	8	\	\
MacLean et al. [16]	8.4	4.2	\	\
Kim et al. [17]	5.004	9.3	\	2.66
This work	3.5	10.41	26.44	3.74
Collins et al. [21]	0.816–1.006	7.2$\pm$2.6	22	\
Yandell et al. [22]	0.459	\	10	\