Table 1. Synthesis of the studied pertinent to nerve responses to stretching.

Author	Year	Stretching	Protocol	N	Location	Duration	Measures	Assessment	Pre	Post
Andrade et al	2018	Passive	Ankle dorsiflexion	15	Sciatic Nerve	1 session	ROM, SWV	PS – 6 minutes	Resting conditions	ROM = 6.4 ± 2.6° SWV =-13.3±7.9%
Andrade et al	2020	Nerve directed stretching	Ankle dorsiflexion	21	Sciatic and Tibia Nerves	60 sessions	ROM, SWVs, SWSt	PS – 3 hours	ROM = 35.7 ± 6.6° SWVs = 6.1 ± 1.5 m/s SWVt = 7.3 ± 1.4 m/s	ROM =36.3 ± 6.1° SWVs = 4.9 ± 1.3 m/s SWVt = 6.3 ± 1.3 m/s
Beltran-Alacreu et al	2015	Neural gliding	Supine body flexion	45	Posterior Nerve Cords	1 session	PPT (left side)	PS – 5 minutes	M = 1.94 ± 0.14kg; T = 2.14 ± 0.54kg; SUB = 2.56 ± 0.88kg TRAP = 3.88 ± 0.88kg TIB = 5.18 ± 1.80kg	M = 2.52 ± 0.16kg; T = 2.31 ± 0.62kg; SUB = 3.01 ± 1.13kg TRAP = 4.17 ± 1.54kg TIB = 5.64 ± 1.89kg
Coppieters et al	2009	Neural gliding	Elbow extension + cervical ipsilateral flexion	15	Median Nerve	1 session	LNG	DS	Resting conditions	LNG = 10.2 ± 2.8 mm
Coppieters et al	2009	Neural tensioning	Elbow extension + cervical contralateral flexion	15	Median Nerve	1 session	LNG	DS	Resting conditions	LNG= 3.6 ± 2.3 mm
Echigo et al	2008	Neural gliding	Elbow extension with forearm supination	34	Median Nerve	1 session	LNG	DS	Resting conditions	LNG = 3.0 ± 1.81 mm
Echigo et al	2008	Neural gliding	Elbow flexion with forearm supination	34	Median Nerve	1 session	LNG	DS	Resting conditions	LNG = 3.0 ± 1.34 mm
Ellis et al	2008	Neural mobilization	Knee extension	27	Sciatic Nerve	1 session	LNM, PNM, LNG Popliteal fossa	DS	Resting conditions	LNM = 6.62mm PNM = 3.26mm LNG = 5.22mm
Gamelas et al	2019	Neural tensioning	4 sets - 10 reps with a 1 minute rest. Each repetition was performed at a rhythm of 6s.	15	Median Nerve	1 session	PPT, VAS Th=Thenar Fr= Forearm	PS – immediately	PPT Fr = 34.75 ± 14.41kg VAS Fr = 3.30 ± 1.76 PPT Th = 42.35 ± 15.8kg VAS Th = 3.83 ± 2.15	PPT Fr = 40.0 ± 13.77kg VAS Fr = 3.23 ± 2.01 PPT Th = 46.22 ± 15.72kg VAS Th = 3.27 ± 2.36
Gamelas et al	2019	Neural gliding	4 sets - 10 reps with a 1 minute rest. Each repetition was performed at a rhythm of 6s.	15	Median Nerve	1 session	PPT, VAS Th=Thenar Fr= Forearm	PS – immediately	PPT Fr = 39.11 ± 14.54kg VAS Fr = 3.60 ± 2.51 PPT Th = 46.38 ± 14.54 kg VAS Th = 3.67 ± 2.66	PPT Fr = 40.97 ± 14.25 kg VAS Fr = 3.43 ± 2.37 PPT Th = 47.89 ± 13.50 kg VAS Th = 3.57 ± 2.66
Jaberzadeh et al	2005	Elbow extension	Passive elbow extension	26	Median Nerve	1 session	RT	DS	RT =0.8 Nm Pain onset=3°	RT = 3.9 Nm Pain onset = 45°
Lee et al	2017	Passive stretching (s)	5 sets - 40 sec with a 20 second rest	22	Hamstrings	9 sessions	PPT, VAS, ROM, ODI	PS - 30 minutes	PPTs = 14.6 ± 2.9; VASs = 5.4 ± 0.8; ROMs = 46.3 ± 8.9 ODIs = 29.7 ± 8.9	PPTs = 17.3 ± 3.1; VASs = 2.1 ± 0.7 ROMs = 51.6 ± 9.7 ODIs = 17.8 ± 5.1
Lee et al	2017	Neural mobilization (nm)	5 sets 20 reps - 40 sec with a 20 second rest	22	Hamstrings	9 sessions	PPT, VAS, ROM, ODI	PS - 30 minutes	PPTnm = 14.5 ± 4.6; VASnm = 5.6 ± 1.0; ODInm =26.4 ± 4.9 ROMnm = 49.4 ± 10.7	PPTnm =18.4 ± 3.9; VASnm = 1.4 ± 0.8; ODInm =14.2 ± 3.8 ROMnm = 55.8 ± 10.2
Martínez-Payá et al	2015	Neurodynamic test	2 wrist flexions	22	Median Nerve	1 session	LNM, PNM, ND	DS	Resting conditions	LNM =32% (3.72mm) PNM =73% (1.58 mm); ND =14%

DS=During Stretching; LNG=Longitudinal nerve motion; LNM=Lateral nerve motion; M=Masseter; ND=Nerve deformation; N/A= Not Available; ODI= Oswestry Disability Index; PNM=Posterior nerve motion; PPT=Pressure pain thresholds; PS= Post Stretching; ROM=Range of movement; RT=Resistive torque; SUB=Suboccipitalis; SWVs= Sciatic nerve Shear wave velocity; SWVt= Tibial nerve Shear wave velocity T=Temporalis; TIB=Tibialis; TRAP=Trapezius; VAS=Visual analog scale.