Table 2.

Studies with the inclusion criteria.

Reference		Molecule	CoQ10 mg/d	Duration (d: Days)	Placebo	n Total/CoQ10	Type of Subjects	Sex	Sport/Activity	Exercise Testing	Age (Years)	Impact on Phys./Sport Perf.
Svensson et al. (1999)	[68]	Ubiquinone	120	20 d	Yes	17/9	Well trained subjects	Male	-	Graded max and Anaerobic tests	28 ± 5	No
Díaz-Castro et al. (2020)	[83,84]	Ubiquinol	200	14 d	Yes	100/50	Well trained subjects	Male	Firemen	Circuit edurance exercises	39 ± 1	-
Kizaki et al. (2015)	[85]	Ubiquinol	600	11 d	Yes	32/17	Well trained subjects	Male	Kendo	4 training days	20 ± 1	No
Kon et al. (2008)	[86]	Ubiquinol	300	20 d	Yes	18/10	High level	Male	Kendo	Muscle injury induced exercise	20 ± 1	Yes
Sarmiento et al. (2016)	[89]	Ubiquinol	200	14 d	Yes	100/50	Well trained subjects	Male	Firemen	Circuit edurance exercises	39 ± 9	-
Suzuki et al. (2021)	[90]	Ubiquinol	300	12 d	Yes	16/8	Well trained subjects	Male	Distance runners	25 & 40 K races	20 ± 2	Yes
Braun et al. (1991)	[41]	Ubiquinone	100	56 d	Yes	12/6	High level	Male	Cyclists	Graded max test	22 ± 2	No
Ho et al. (2020)	[56]	Ubiquinone	300	84 d	Yes	31/15	Moderately trained subjects	Male & Female	Soccer & Taekwondo	None	20 ± 1	-
Weston et al. (1997)	[72]	Ubiquinone	≃70	28 d	Yes	18/6	High level	Male	Cyclists and Triathletes	Graded max.	25 ± 3	No