Table 4.

Assessment of the methodological quality of studies on the impact power of punches.

Reference	Study Design	Blinding	Representativity (Selection Bias)	Sample Representativity (Dropouts)	Confounding Factors	Data Selection	Data Analysis	Representation of Results	Overall Classification
Brown et al., 2020 [44]	2	3	3	4	2	1	1	1	Moderate
Brown et al., 2021 [45]	2	3	3	4	2	1	1	1	Moderate
Brown et al., 2022 [21]	2	3	3	4	2	1	1	1	Moderate
Brown et al., 2023 [46]	2	3	3	4	2	1	1	1	Moderate
Del Vecchio et al., 2018 [47]	1	2	3	1	2	1	1	2	Moderate
Del Vecchio et al., 2019 [48]	1	2	3	1	2	1	1	2	Moderate
Del Vecchio et al., 2021 [49]	2	3	3	4	2	1	1	1	Moderate

Legend: 1 = Strong; 2 = Moderate; 3 = Weak; 4 = No rating.