Table 1.

Study quality scoring system (adapted from Bishop et al. [38])

Criteria no	Item	Score
1	Inclusion criteria stated	0–2
2	Subjects assigned appropriately	0–2
3	Procedures described (equations, equipment setting, jump actions)	0–2
4	Dependent variables defineda	0–2
5	Assessments practical (easy to implement)	0–2
6	Statistics appropriate (reliability, significant differences)	0–2
7	Results detailed (mean, standard deviation)	0–2
8	Conclusions insightful (clear, practical application, future directions)	0–2
Total		0–16

^aThe fourth item includes the definition of first meaningful change in vertical ground reaction force on the force–time curve, the instant of countermovement and drop action, instant of take-off and landing