Table 3 Effectiveness of eccentric overload training in patients with chronic Achilles tendinopathy according to the studies included.

Authors	Participants (n)	Method	Inclusion criteria	Intervention	Outcome measure	Duration of intervention	Result in intervention group	Result in control group
Roos et al (2004)23	44	RCT	Chronic Achilles tendinopathy	I: Eccentric training	FAOS	12 weeks	↓ 37%	C1: ↓ 23%
				C1: Eccentric training with night splint				C2: ↓ 13%
				C2: Night splint
Mafi et al (2001)24	44	RCT	Chronic Achilles tendinopathy	I: Eccentric training	VAS	12 weeks	↓ 83%	↓ 86%
				C: Concentric training
Niesen‐Vertommen et al (1992)25	17	RCT	Chronic Achilles tendinopathy	I: Eccentric training	Ordinal Scale	12 weeks	↓ 78%	↓ 46%
				C: Concentric training
Silbernagel et al (2001)4	40	RCT	Chronic Achilles tendinopathy	I: Eccentric training	VAS	12 weeks	↓ 29%	↓ 15%
				C: Concentric training
Alfredson et al (1998)18	30	CT	Chronic Achilles tendinopathy	I: Eccentric training	VAS	12 weeks	↓ 94%	↓ 70%
				C: Surgery
Fahlström et al (2003)26	78	CT	Chronic Achilles tendinopathy. (A) Mid‐portion of the Achilles tendon and (B) insertion of the Achilles tendon	I: Eccentric training	VAS	12 weeks	A: ↓ 85%
							B: ↓ 81%
Shalabi et al (2004)27	25	CT	Chronic Achilles tendinopathy	I: Eccentric training	Ordinal Scale	12 weeks	↓ 40%
Alfredson et al (2003)28	6	CT	Chronic Achilles tendinopathy	I: Eccentric training	VAS	12 weeks	↓ 75%
Stanish et al (1986)29	200	CT	Chronic Achilles tendinopathy	I: Eccentric training	Ordinal Scale	6 weeks	↓ 87%

C, control group; CT, clinical trial; I, intervention group; FAOS, Foot and Ankle Outcome Score; RCT, randomised clinical trial; VAS, visual analogue scale; ↓, improvement in pain score.