Table 5.

Subgroup analyses regarding effects of plyometric training on running economy

Moderator variables	Hedges’ g [95% CIs LL, UL]	Interpretation
Performance level
Lv. 1 (Recreational level)	0.12 [ − 0.72, 0.95]	Trivial
Lv. 2 (Moderate level)	− 0.20 [ − 0.62, 0.22]	Small
Lv. 3 (High level)	−
Age
Young (24.3–31.0 years)	− 0.26 [ − 1.09, 0.58]	Small
Old (32.5–33.3 years)	− 0.01 [ − 1.38, 1.37]	Trivial
Intervention period
Short (4–6 weeks)	− 0.06 [ − 0.67, 0.55]	Trivial
Long (8–10 weeks)	− 0.26 [ − 0.67, 0.15]	Small

Data are standardized mean difference for effect size values (Hedges’ g)

Hedges’ g represents time (pre vs. post) by group (experimental vs. control) interaction

CIs: confidence intervals, LL: lower limit, UL: upper limit