Effects of a Heated Vibration Massage Pad on Horses: Randomized, Blinded Measures of Mechanical Nociception, Behavior, and Spinal and Limb Kinematics

Gillian Tabor; Natalie Bennett; Corinna  Crosby; Zoe Dunham; Emily Jordan; Fiona  Bloom

doi:10.64292/ijes.201

Authors

Gillian Tabor Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0000-0001-8490-6472
Natalie Bennett Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0009-0006-2221-0529
Corinna Crosby Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0009-0005-2514-3029
Zoe Dunham Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0009-0005-7812-039X
Emily Jordan Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0009-0003-9283-6023
Fiona Bloom Equine Department, Hartpury University, Gloucester, GL19 3BE, United Kingdom https://orcid.org/0000-0002-3014-7738

DOI:

https://doi.org/10.64292/ijes.201

Keywords:

Equine, therapy, therapeutic devices, vibration, locomotion

Abstract

Therapy devices are widely marketed to horse owners, claiming to improve well-being, support musculoskeletal function, and aid injury rehabilitation, though many claims lack scientific evidence. This study evaluated the immediate (part A) and four-week (part B) effects of a heated vibration massage pad applied to the thoracic epaxial region on mechanical nociceptive threshold (MNT), behavior, and kinematics of horses. A randomized, blinded design was employed with a convenience sample of 10 riding horses in treatment and control groups. Inertial motion sensors and limb markers captured kinematic data, behavior was analyzed using EquiFACS, and MNT was measured using pressure algometry. Immediately (part A) following application of the heated vibration massage pad, there were no significant changes in MNT, behavior, or dorsoventral range of motion at the poll, wither, pelvis, or tuber coxae during walk or trot, nor in minimum difference, maximum difference, and range of motion at the poll, wither, and pelvis in trot, in the treatment or the control group (all P > 0.05). Similarly, stride length and duration in walk remained unchanged. However, in trot, the treatment group exhibited minor reductions in stride length (P = 0.025, d = 0.2) and hindlimb retraction (P = 0.005, d = 0.5), with increased stride duration (P = 0.044, d = −0.17). After four weeks of regular use (part B), the treatment group showed significant increases in stride length during trot (309.8 cm ± 37.8 vs. 334.4 cm ± 35.1, P = 0.017, d = 1.38) as well as increased forelimb retraction, hindlimb protraction, and retraction. While immediate effects were negligible, consistent use of the heated vibration massage pad may enhance limb kinematics, suggesting its potential as a convenient addition to maintenance regimes for riding horses.

References

Animal Welfare Act 2006.

Haussler KK, Erb HN. Mechanical nociceptive thresholds in the axial skeleton of horses. Equine Veterinary Journal 2010;38:70–5. https://doi.org/10.2746/042516406775374315.

Veterinary Surgeons Act 1966.

Mackechnie-Guire R, Mackechnie-Guire E, Bush R, Wyatt R, Fisher D, Fisher M, et al. A controlled, blinded study investigating the effect that a 20-minute cycloidal vibration has on whole horse locomotion and Thoracolumbar profiles. Journal of Equine Veterinary Science 2018;71:84–9. https://doi.org/10.1016/j.jevs.2018.09.012.

Ferreira RM, Silva R, Vigário P, Martins PN, Casanova F, Fernandes RJ, et al. The effects of massage guns on performance and recovery: a systematic review. Journal of Functional Morphology and Kinesiology 2023;8:138. https://doi.org/10.3390/jfmk8030138.

Thirkell J, Hyland R. A survey examining attitudes towards equine complementary therapies for the treatment of musculoskeletal injuries. Journal of Equine Veterinary Science 2017;59:82–7. https://doi.org/10.1016/j.jevs.2017.10.004.

Ajibola OOE, Fagbolagun KO, Folorunso OP. Design and fabrication of a moist heat therapy device for treating non-specific low back pain. West Indian Journal of Engineering 2018;41:55–64.

Kerautret Y, Di Rienzo F, Eyssautier C, Guillot A. Comparative efficacy of robotic and manual massage interventions on performance and well-being: a randomized crossover trial. Sports Health: A Multidisciplinary Approach 2024;16:650–60. https://doi.org/10.1177/19417381231190869.

Badenhorst J, Fourie PJ, Vosloo M. The effects of Swedish massage on performance horses in South Africa. Journal for New Generation Sciences 2017;15:16–32. https://doi.org/10.10520/EJC-f099306f1.

Weerapong P, Hume PA, Kolt GS. The mechanisms of massage and effects on performance, muscle recovery and injury prevention. Sports Medicine 2005;35:235–56. https://doi.org/10.2165/00007256-200535030-00004.

Diego MA, Field T. Moderate pressure massage elicits a parasympathetic nervous system response. International Journal of Neuroscience 2009;119:630–8. https://doi.org/10.1080/00207450802329605.

Harris A, Northrop AJ, Martin JH, Adjei LJ. Effects of equine back massage pads on stress indicators by the assessment of behaviour, heart rate and salivary cortisol. Proceedings of the British Society of Animal Science 2009;2009:2–2. https://doi.org/10.1017/s1752756200028416.

Halsberghe BT, Gordon-Ross P, Peterson R. Whole body vibration affects the cross-sectional area and symmetry of the m. multifidus of the thoracolumbar spine in the horse. Equine Veterinary Education 2016;29:493–9. https://doi.org/10.1111/eve.12630.

Hobson KJ, Rudd M. An Investigation into the Use of an Equine Massage Pad and its Ability to Influence the Biomechanics of the Horse 2022. https://doi.org/10.2139/ssrn.4012866.

Northrop A, Faye Hesketh, Harris A, Brigden C, Martin J. Investigation into the effectiveness of an equine back massage pad to promote relaxation and relieve back stiffness in horses; preliminary findings 2009.

Baker RJ, Bell GW. The effect of therapeutic modalities on blood flow in the human calf. Journal of Orthopaedic & Sports Physical Therapy 1991;13:23–7. https://doi.org/10.2519/jospt.1991.13.1.23.

Kaneps AJ. Practical rehabilitation and physical therapy for the general equine practitioner. Veterinary Clinics of North America: Equine Practice 2016;32:167–80. https://doi.org/10.1016/j.cveq.2015.12.001.

Wilson JM, McKenzie E, Duesterdieck-Zellmer K. International survey regarding the use of rehabilitation modalities in horses. Frontiers in Veterinary Science 2018;5:120. https://doi.org/10.3389/fvets.2018.00120.

Ridgway K, Harman J. Equine back rehabilitation. Veterinary Clinics of North America: Equine Practice 1999;15:263–80. https://doi.org/10.1016/s0749-0739(17)30176-1.

Kaneps AJ. Tissue temperature response to hot and cold therapy in the metacarpal region of a horse. Proceedings of the Annual Convention of the AAEP, vol. 46, AAEP Proceedings; 2000, p. 208–13.

French SD, Cameron M, Walker BF, Reggars JW, Esterman AJ. A Cochrane review of superficial heat or cold for low back pain. Spine 2006;31:998–1006. https://doi.org/10.1097/01.brs.0000214881.10814.64.

Chandler A, Preece J, Lister S. Using heat therapy for pain management. Nursing Standard 2002;17:40–2. https://doi.org/10.7748/ns2002.11.17.9.40.c3297.

Guedes A. Pain management in horses. Veterinary Clinics of North America: Equine Practice 2017;33:181–211. https://doi.org/10.1016/j.cveq.2016.11.006.

Michlovitz SL. Thermal agents in rehabilitation. 3rd Edition. Philadelphia: F.A. Davis; 1996.

Riegel R. ThermotexTM therapy system infrared heating pad versus a conventional heating pad and a hot towel 2016.

Merrifield-Jones M, Tabor G, Williams J. Inter- and intra-rater reliability of soft tissue palpation scoring in the equine thoracic epaxial region. Journal of Equine Veterinary Science 2019;83:102812. https://doi.org/10.1016/j.jevs.2019.102812.

American Association of Equine Practitioners. Lameness exams: Evaluating the lame horse n.d. https://aaep.org/horsehealth/lameness-exams-evaluating-lame-horse (accessed July 1, 2025).

Pongratz U, Licka T. Algometry to measure pain threshold in the horse's back – An in vivo and in vitro study. BMC Veterinary Research 2017;13:80. https://doi.org/10.1186/s12917-017-1002-y.

Gleerup KB, Forkman B, Lindegaard C, Andersen PH. An equine pain face. Veterinary Anaesthesia and Analgesia 2015;42:103–14. https://doi.org/10.1111/vaa.12212.

Haussler KK, Erb HN. Mechanical nociceptive thresholds in the axial skeleton of horses. Equine Veterinary Journal 2006;38:70–5. https://doi.org/10.2746/042516406775374315.

Wathan J, Burrows AM, Waller BM, McComb K. EquiFACS: The equine Facial Action Coding System. PLOS ONE 2015;10:e0131738. https://doi.org/10.1371/journal.pone.0131738.

Birt MA, Guay K, Treiber K, Ramirez HR, Snyder D. The influence of a soft touch therapy Flowtrition on heart rate, surface temperature, and behavior in horses. Journal of Equine Veterinary Science 2015;35:636–44. https://doi.org/10.1016/j.jevs.2015.06.006.

Young T, Creighton E, Smith T, Hosie C. A novel scale of behavioural indicators of stress for use with domestic horses. Applied Animal Behaviour Science 2012;140:33–43. https://doi.org/10.1016/j.applanim.2012.05.008.

Calzone S, Wilkins C, Deckers I, Nankervis K. The effects of the EquiAmiTM training aid on the kinematics of the horse at the walk and trot in-hand. Journal of Equine Veterinary Science 2022;111:103868. https://doi.org/10.1016/j.jevs.2022.103868.

Walker VA, Tranquille CA, Dyson SJ, Spear J, Murray RC. Association of a subjective muscle score with increased angles of flexion during sitting trot in dressage horses. Journal of Equine Veterinary Science 2016;40:6–15. https://doi.org/10.1016/j.jevs.2016.01.011.

Pfau T, Witte TH, Wilson AM. A method for deriving displacement data during cyclical movement using an inertial sensor. Journal of Experimental Biology 2005;208:2503–14. https://doi.org/10.1242/jeb.01658.

Warner SM, Koch TO, Pfau T. Inertial sensors for assessment of back movement in horses during locomotion over ground. Equine Veterinary Journal 2010;42:417–24. https://doi.org/10.1111/j.2042-3306.2010.00200.x.

Kramer J, Keegan KG, Kelmer G, Wilson DA. Objective determination of pelvic movement during hind limb lameness by use of a signal decomposition method and pelvic height differences. American Journal of Veterinary Research 2004;65:741–7. https://doi.org/10.2460/ajvr.2004.65.741.

Tranquille CA, Tacey JB, Walker VA, Mackechnie-Guire R, Ellis J, Nankervis KJ, et al. The immediate effect of water treadmill walking exercise on overground in-hand walking locomotion in the horse. Comparative Exercise Physiology 2022;18:413–8. https://doi.org/10.3920/cep220027.

Drevemo S, Dalin G, Fredricson I, Hjerten G. Equine locomotion: 1. The analysis of linear and temporal stride characteristics of trotting Standardbreds. Equine Veterinary Journal 1980;12:60–5. https://doi.org/10.1111/j.2042-3306.1980.tb02310.x.

Clayton HM. Comparison of the stride kinematics of the collected, working, medium and extended trot in horses. Equine Veterinary Journal 1994;26:230–4. https://doi.org/10.1111/j.2042-3306.1994.tb04375.x.

Walker VA, Dyson SJ, Murray RC. Effect of a Pessoa training aid on temporal, linear and angular variables of the working trot. The Veterinary Journal 2013;198:404–11. https://doi.org/10.1016/j.tvjl.2013.07.005.

Sapone M, Martin P, Ben Mansour K, Chateau H, Marin F. The protraction and retraction angles of horse limbs: an estimation during trotting using inertial sensors. Sensors 2021;21:3792. https://doi.org/10.3390/s21113792.

Varcoe-Cocks K, Sagar KN, Jeffcott LB, McGowan CM. Pressure algometry to quantify muscle pain in racehorses with suspected sacroiliac dysfunction. Equine Veterinary Journal 2006;38:558–62. https://doi.org/10.2746/042516406x154804.

Menke ES, Blom G, van Loon JPAM, Back W. Pressure algometry in Icelandic horses: interexaminer and Intraexaminer reliability. Journal of Equine Veterinary Science 2016;36:26–31. https://doi.org/10.1016/j.jevs.2015.10.007.

Bussières G, Jacques C, Lainay O, Beauchamp G, Leblond A, Cadoré J-L, et al. Development of a composite orthopaedic pain scale in horses. Research in Veterinary Science 2008;85:294–306. https://doi.org/10.1016/j.rvsc.2007.10.011.

Krueger K. Behaviour of horses in the "round pen technique." Applied Animal Behaviour Science 2007;104:162–70. https://doi.org/10.1016/j.applanim.2006.04.021.

Fenner K, Yoon S, White P, Starling M, McGreevy P. The effect of noseband tightening on horses' behavior, eye temperature, and cardiac responses. PLOS ONE 2016;11:e0154179. https://doi.org/10.1371/journal.pone.0154179.

Thorbergson ZW, Nielsen SG, Beaulieu RJ, Doyle RE. Physiological and behavioral responses of horses to wither scratching and patting the neck when under saddle. Journal of Applied Animal Welfare Science 2016;19:245–59. https://doi.org/10.1080/10888705.2015.1130630.

Lansade L, Bouissou M-F, Erhard HW. Fearfulness in horses: A temperament trait stable across time and situations. Applied Animal Behaviour Science 2008;115:182–200. https://doi.org/10.1016/j.applanim.2008.06.011.

Thompson B. Effect sizes, confidence intervals, and confidence intervals for effect sizes. Psychology in the Schools 2007;44:423–32. https://doi.org/10.1002/pits.20234.

Payne RC, Hutchinson JR, Robilliard JJ, Smith NC, Wilson AM. Functional specialisation of pelvic limb anatomy in horses (Equus caballus). Journal of Anatomy 2005;206:557–74. https://doi.org/10.1111/j.1469-7580.2005.00420.x.

Scott M, Swenson LA. Evaluating the benefits of equine massage therapy: a review of the evidence and current practices. Journal of Equine Veterinary Science 2009;29:687–97. https://doi.org/10.1016/j.jevs.2009.07.017.

Pongratz U, Licka T. Algometry to Measure Pain Threshold in the Horse's Back – An In Vivo and In Vitro Study. BMC Veterinary Research 2017;13. https://doi.org/10.1186/s12917-017-1002-y.

Sullivan KA, Hill AE, Haussler KK. The effects of chiropractic, massage and phenylbutazone on spinal mechanical nociceptive thresholds in horses without clinical signs. Equine Veterinary Journal 2008;40:14–20. https://doi.org/10.2746/042516407x240456.

Saggini R. The mechanical vibration: Therapeutic effects and applications. Bentham Science Publishers; 2017.

Gosall NK, Gosall GS. The Doctor's Guide to critical appraisal. PasTest Ltd; 2012.

Bishop MD, Torres-Cueco R, Gay CW, Lluch-Girbés E, Beneciuk JM, Bialosky JE. What effect can manual therapy have on a patient's pain experience? Pain Management 2015;5:455–64. https://doi.org/10.2217/pmt.15.39.

Dyson S, Martin C, Bondi A, Ellis AD. The influence of rider skill on ridden horse behaviour, assessed using the Ridden Horse Pain Ethogram, and gait quality. Equine Veterinary Education 2022;34:e308–17. https://doi.org/10.1111/eve.13434.

Rhodin M, Álvarez CBG, Byström A, Johnston C, Van Weeren PR, Roepstorff L, et al. The effect of different head and neck positions on the caudal back and hindlimb kinematics in the elite dressage horse at trot. Equine Veterinary Journal 2009;41:274–9. https://doi.org/10.2746/042516409x394436.

Waldern NM, Wiestner T, von Peinen K, Álvarez CGG, Roepstorff L, Johnston C, et al. Influence of different head-neck positions on vertical ground reaction forces, linear and time parameters in the unridden horse walking and trotting on a treadmill. Equine Veterinary Journal 2009;41:268–73. https://doi.org/10.2746/042516409x397389.

Egan S, Brama P, McGrath D. Research trends in equine movement analysis, future opportunities and potential barriers in the digital age: A scoping review from 1978 to 2018. Equine Veterinary Journal 2019;51:813–24. https://doi.org/10.1111/evj.13076.