Table 3. Data description regarding sEMG activity in each study, in relation to exercise type and normalized sEMG activation expressed as % peak RMS.

Reference	Exercise	Gluteus maximus	Biceps Femoris	Vastus Lateralis	Rectus Femoris	Erector Spinae	Lumbar Multifidus
Lee et al. (2018) [27]	Deadlift	51.52 ± 6.0 peak RMS	57.45 ± 6.34% peak RMS	n/a	58.57 ± 13.73% peak RMS	n/a	n/a
	Romanian deadlift	46.88 ± 7.39% peak RMS	56.66 ± 18.56% peak RMS	n/a	25.26 ± 14.21% peak RMS	n/a	n/a
Snyder et al. (2017) [36]	Deadlift	~47% peak RMS	~28% peak RMS	~48% peak RMS	n/a	~73% peak RMS	n/a
	BallPro	~30% peak RMS	~25% peak RMS	~80% peak RMS	n/a	~53% peak RMS	n/a
	ToePro	~30% peak RMS	~31% peak RMS	~63% peak RMS	n/a	~58% peak RMS	n/a
Bezerra et al. (2013) [26]	Deadlift	n/a	100.1 ± 24.7% peak RMS	128.3 ± 33.9% peak RMS	n/a	n/a	112.7 ± 42.7% peak RMS
	Stiff leg deadlift	n/a	98.6 ± 28.5% peak RMS	101.1 ± 14.6% peak RMS	n/a	n/a	106 ± 20.5% peak RMS

BallPro, walk-in machine deadlift with feet ball-hand; RMS, root mean square; ToePro, walk-in machine deadlift with toes-hand.