TABLE 2.

Direction of change in running performance or metabolic parameters of the included studies.

Study	Parameter	Outcome
Performance parameters
Yamaguchi et al., 2015	Time to exhaustion	Improvement
	Total running distance	Improvement
Yamaguchi et al., 2020	Time to exhaustion	Improvement
Damasceno et al., 2014	Stride time	Impairment
Lowery et al., 2014	One mile uphill run time	Impairment
	Ground contact time	Impairment
Wilson et al., 2010	30-Min running performance	Impairment
Damasceno et al., 2014	Contact time	No change
	Flight time	No change
	3k time trial	No change
Mojock et al., 2011	Running speed	No change
	Distance covered	No change
Takizawa et al., 2015	Time to exhaustion	No change
Zourdos et al., 2012	Total running distance	No change
Metabolic parameters
Godges et al., 1989	Oxygen uptake @40% VO2 maximum static stretching	Improvement
	Oxygen uptake @60% VO2 maximum static stretching	Improvement
	Oxygen uptake @80% VO2 maximum static stretching	Improvement
	Oxygen uptake @60% VO2 maximum proprioceptive neuromuscular facilitation (PNF) stretching	Improvement
Wilson et al., 2010	Energy expenditure	Impairment
Zourdos et al., 2012	Energy cost during 30-min run	Impairment
Allison et al., 2008	Oxygen uptake	No change
	Minute ventilation	No change
	Energy expenditure	No change
Damasceno et al., 2014	Running economy	No change
	Caloric unic cost	No change
Godges et al., 1989	Oxygen uptake @40% VO2 maximum PNF stretching	No change
	Oxygen uptake @80% VO2 maximum PNF stretching	No change
Hayes and Walker, 2007	Running economy static stretching	No change
	Oxygen uptake static stretching	No change
	Running economy progressive static stretching	No change
	Oxygen uptake progressive static stretching	No change
	Running economy dynamic stretching	No change
	Oxygen uptake progressive dynamic stretching	No change
Mojock et al., 2011	Average heart rate @65% of VO2 maximum	No change
	Energy expenditure @65% VO2 maximum	No change
	65% VO2 maximum	No change
	Average heart rate at 30 min all-out test	No change
	Heart rate maximum at 30 min all-out test	No change
Takizawa et al., 2015	Oxygen uptake	No change
	Blood lactate accumulation	No change
Yamaguchi et al., 2015	Oxygen uptake	No change
	Blood lactate concentration	No change
	Heart rate	No change
Yamaguchi et al., 2020	Oxygen uptake	No change