1RM	One-repetition maximum
ACL	Anterior cruciate ligament
CI	Confidence interval
COD	Change of direction
ES	Effect size
GRADE	Grading of Recommendations Assessment, Development and Evaluation
HFG	High-frequency group
HIIT	High-intensity interval training
HIT	High-intensity training
HR	Heart rate
HRmax	Maximum heart rate
I2	I-squared statistic
JBI	Joanna Briggs Institute
LFG	Low-frequency group
MAS	Maximal aerobic speed
MICT	Moderate-intensity continuous training
NRCT	Non-randomised controlled trial
OSF	Open Science Framework
PGC-1α	Peroxisome proliferator-activated receptor gamma coactivator 1-alpha
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
RCT	Randomised controlled trial
RoB 2	Risk of Bias 2
ROBINS-I	Risk of Bias in Non-randomised Studies of Interventions
SMD	Standardised mean difference
VIFT	Vameval Intermittent Fitness Test
VO2max	Maximal oxygen uptake