Chronic Effects of Different Intensities of Power Training on Neuromuscular Parameters in Older People: A Systematic Review with Meta-analysis

Sports Medicine - Open

Table 3 Summary of meta-analysis results

Outcome measure	SMD (95% CI)	Z value	p value	I² (%)
Leg press 1RM^a	0.296	1.800	0.072	11.4
Leg press 1RM^b	0.266	1.621	0.105	28.2
Knee extension 1RM^a	0.523	2.662	0.008*	0.0
Knee extension 1RM^b	0.286	1.477	0.140	0.0
Leg press power^a	0.130	0.799	0.425	0.0
Leg press power^b	0.065	0.395	0.693	0.0
Knee extension power^a	0.016	0.085	0.932	40.3
Knee extension power^b	− 0.134	− 0.693	0.488	0.0

1RM one-repetition maximum, SMD standardized mean difference, I² heterogeneity
^aLow- (20–40%1RM) versus high-intensity (70–80% of 1RM) (comparison using the group training at 20% of 1RM from study by De Vos et al. [27])
^blow-to-moderate- (40–50%1RM) versus High-intensity (70–80% of 1RM) (comparison using the group training at 50% of 1RM from study by De Vos et al. [27])