Table 2.

Description of exercise interventions using CERT checklist

Study	Alfredson et al. [26, 41]	Boesen et al. [47]	Masood et al. [45]	Mayer et al. [50]	Neeter et al. [51]	Rabusin et al. [46]	Tumilty et al. [48]	Silbernagel et al. [25, 39, 49]	Sancho et al. [23]	Yu et al. [24]	Yu et al. [24]
Intervention	Eccentric exercises	Eccentric exercises	Eccentric exercises	Eccentric exercises	Toe-raises	Eccentric exercises	Eccentric exercises	Toe-raises	Hopping intervention	Eccentric exercises	Concentric exercises
Exercise details	Straight and bend knee heel drop off step	Straight and bend knee heel drop off step	Straight and bend knee heel drop off step	Standardised physiotherapy with eccentric training 10 single 30-min sessions	Two-legged concentric–eccentric toe-raises	Straight and bend knee heel drop off step	Straight and bend knee heel drop off step	Two-legged and one-legged concentric–eccentric toe-raises, and eccentric and fast rebounding toe-raises	4 levels of exercise include isometric, isotonic, jump and hopping	Straight and bend knee heel drop off step	Heel raises using theraband with straightened knee, sit on a chair and lift the heels. Hold onto the wall and lift the heels of both feet and progress to injured one. In addition to Hamstring and calf muscle stretching
Equipment	Backpack and a weight machine	U	Backpack	U	U	Backpack and a weight machine	U	Backpack and a weight machine	U	Bag with dumbbell	Elastic band
Provider	Physical therapist	Physical therapist	U	Physical therapist	Physical therapist	Podiatrist	Physical therapist	Physical therapist	Physical therapist	Research assistant	Research assistant
Delivery	Individually	Individually	Individually	Individually	Individually	Individually	Individually	Individually	Individually	Individually	Individually
Supervision	U	U	U	U	U	U	U	Y	Y	U	U
Reporting of adherence	N	N	N	N	N	Y	N	U	Y	N	N
Motivation strategies	N	N	N	N	N	N	N	N	N	N	N
Decision rules for progressing	Based on pain level	Based on pain level	Based on pain level	U	Based on pain level	Based on pain level	Based on pain level	Based on pain level	Based on load tolerance	Based on pain level	Based on pain level
Illustrations of ex	Y	Y	Y	U	Y	Y	Y	Y	Y	U	U
Home programme content	Y	Y	U	Y	Y	Y	Y	Y	Y	U	U
Nonexercised components	Running activity was allowed if not agg pain	sport activities were allowed if not agg pain	N	U	N	N	U	U	Running activity was allowed if not agg pain	N	N
Incidence of adverse events documented	N	U	N	N	Y	Y	N	Y	Y	N	N
Location of exercises performed	U	U	U	U	U	U	U	U	U	U	U
Dosage*	3, 15 reps, twice a day 7 days/week, for 12 weeks, NS	3, 15 reps, twice a day 7 days/week, for 12 weeks, NS	3, 15 reps, twice a day 7 days/week, for 12 weeks, NS	3, 15, Freq ns, 2-3 time/week, for 4 weeks, NS	2, 30 reps, 3 times/day for 10 weeks, NS	3, 15 reps, twice a day 7 days/week, for 12 weeks, NS	3, 15 reps, twice a day 7 days/week, for 12 weeks, NS	3, 10–15 reps, once a day for 12 weeks to 6 months, NS	Starts with 5 sets of 45 s, three times a day for 12 weeks, BW	3, 15 reps, Freq ns, for 8 weeks, NS	3, 15 reps, Freq ns, for 8 weeks, NS
Tailoring	Generic, intensity was based on the patients’ status	Generic, intensity was based on the patients’ status	Generic, intensity was based on the patients’ status	U	Generic, progression was based on the patients’ status	Generic, intensity was based on the patients’ status	Generic, intensity was based on the patients’ status	Generic, intensity and number of repetitions were based on the patients’ status	Generic, progression was based on the patients’ status	Individual	Individual
Starting level	BW	U	BW	U	U	BW	U	Bilateral	Isometric seated heel raises with BW	Bilateral	Bilateral
Exercise intervention is delivered as planned	U	U	U	U	U	U	U	U	Y	U	U

Y,yes; N, no; U, unclear; NS, not specified; BW, body weight; ex., exercise; *dosage [sets, repetitions, duration, intensity]