##Amrinder, S., Sakshi, G., & Singh, S. J. (2014). Effect of plyometric training on sand versus grass on muscle soreness and selected sportspecific performance variables in hockey players. Journal of Human Sport and Exercise, 9(1), 59–67. ##Arazi, H., Eston, R., Asadi, A., Roozbeh, B., & Saati Zarei, A. (2016). Type of Ground Surface during Plyometric Training Affects the Severity of Exercise-Induced Muscle Damage. Sports (Basel, Switzerland), 4(1), 15. ##Arazi, H., Mohammadi, M., & Asadi, A. (2014). Muscular adaptations to depth jump plyometric training: Comparison of sand vs. land surface. Interventional Medicine and Applied Science, 6(3), 125–130. ##Barrett, R. S., Neal, R. J., & Roberts, L. J. (1998). The dynamic loading response of surfaces encountered in beach running. Journal of Science and Medicine in Sport, 1(1), 1–11. ##Binnie, Martyn J., Dawson, B., Pinnington, H., Landers, G., & Peeling, P. (2013). Effect of training surface on acute physiological responses after interval training. Journal of Strength and Conditioning Research, 27(4), 1047–1056. ##Binnie, Martyn J, Peeling, P., Pinnington, H., Landers, G., & Dawson, B. (2013). Effect of surface-specific training on 20-m sprint performance on sand and grass surfaces. Journal of Strength and Conditioning Research, 27(12), 3515–3520. ##Binnie, Martyn John, Dawson, B., Arnot, M. A., Pinnington, H., Landers, G., & Peeling, P. (2014). Effect of sand versus grass training surfaces during an 8-week pre-season conditioning programme in team sport athletes. Journal of Sports Sciences, 32(11), 1001–1012. ##Bishop, P., & Martino, M. (1993). Blood Lactate Measurement in Recovery as an Adjunct to Training: Practical Considerations. Sports Medicine, 16(1), 5–13. ##Bompa, T. O., & Buzzichelli, C. (2019). Periodization-: theory and methodology of training. Human kinetics. ##Brown, H., Dawson, B., Binnie, M. J., Pinnington, H., Sim, M., Clemons, T. D., & Peeling, P. (2017). Sand training: Exercise-induced muscle damage and inflammatory responses to matched-intensity exercise. European Journal of Sport Science, 17(6), 741–747. ## Chatzinikolaou, A., Fatouros, I. G., Gourgoulis, V., Avloniti, A., Jamurtas, A. Z., Nikolaidis, M. G., Douroudos, I., Michailidis, Y., Beneka, A., Malliou, P., Tofas, T., Georgiadis, I., Mandalidis, D., & Taxildaris, K. (2010). Time course of changes in performance and inflammatory responses after acute plyometric exercise. Journal of Strength and Conditioning Research, 24(5), 1389–1398. ##Costill, D. L., Wilmore, J. H., & Kenney, and W. L. (2012). Physiology of sport and exercise. ##Gaudino, P., Gaudino, C., Alberti, G., & Minetti, A. E. (2013). Biomechanics and predicted energetics of sprinting on sand: Hints for soccer training. Journal of Science and Medicine in Sport, 16(3), 271–275. ##Impellizzeri, F. M., Rampinini, E., Castagna, C., Martino, F., Fiorini, S., & Wisloff, U. (2008). Effect of plyometric training on sand versus grass on muscle soreness and jumping and sprinting ability in soccer players. British Journal of Sports Medicine, 42(1), 42–46. ##Johansen, K. L., & Painter, P. (2014). Physical Activity and Exercise. In Nutrition in Kidney Disease (13thed ed., Vol. 1, pp. 271–287). Humana Press. ##Kasabalis, A., Douda, H., & Tokmakidis, S. P. (2005). Relationship between anaerobic power and jumping of selected male volleyball players of different ages. Perceptual and Motor Skills, 100(3 I), 607–614. ##Lahmian, O. G., Salesi, M., Dast, H., & Hagh, B. (2014). Comparing The Effects of The Plyometric Exercise on Sand , Grass and Wood Surfaces on Delayed-Onset Muscle Soreness Of Young Athletes. International Journal of Sport Studies, 4(4), 441–447. ##Lejeune, T. M., Willems, P. A., & Heglund, N. C. (1998). Mechanics and energetics of human locomotion on sand. Journal of Experimental Biology, 201(13), 2071–2080. ##Marcora, S. M., & Bosio, A. (2007). Effect of exercise-induced muscle damage on endurance running performance in humans. Scandinavian Journal of Medicine and Science in Sports, 17(6), 662–671. ##Miyama, M., & Nosaka, K. (2004). Influence of surface on muscle damage and soreness induced by consecutive drop jumps. Journal of Strength and Conditioning Research, 18(2), 206–211. ##Morgan, D. L., & Proske, U. (1997). Factors contributing to energy storage during the stretch-shortening cycle. Journal of Applied Biomechanics, 13(4), 464–466. ##Muramatsu, S., Fukudome, A., Miyama, M., Arimoto, M., & Kijima, A. (2006). Energy expenditure in maximal jumps on sand. Journal of Physiological Anthropology, 25(1), 59–61. ##Murphy, D. F., Connolly, D. A. J., & Beynnon, B. (2003). Risk factors for lower extremity injury: a review of the literature. British Journal of Sports Medicine, 37(1), 13–29. ##Nazari, S., Avansar, S., & A Nazari, V. (2015). Investigating the morphological and physiological characteristics of adolescent volleyball players in order to identify talents based on different positions. Sport Biosciences, 7(2), 187–209. ##Nielsen, R. O., Rønnow, L., Rasmussen, S., & Lind, M. (2014). A prospective study on time to recovery in 254 injured novice runners. PLoS ONE, 9(6), e99877. ##Pinnington, H. C., & Dawson, B. (2001). Running economy of elite surf iron men and male runners, on soft dry beach sand and grass. European Journal of Applied Physiology, 86(1), 62–70. ##Pinnington, Hugh C., Lloyd, D. G., Besier, T. F., & Dawson, B. (2005). Kinematic and electromyography analysis of submaximal differences running on a firm surface compared with soft, dry sand. European Journal of Applied Physiology, 94(3), 242–253. ##Pinnington, Hugh C, & Dawson, B. (2001). The energy cost of running on grass compared to soft dry beach sand. Journal of Science and Medicine in Sport, 4(4), 416–430. ##Richie, D. H., DeVries, H. A., & Endo, C. K. (1993). Shin muscle activity and sports surfaces. An electromyographic study. Journal of the American Podiatric Medical Association, 83(4), 181–190. ##Robergs RA & Roberts S. (2010). Fundamental Principle of Exercise Physiology (pp. 58–71). Samt Publication. ##Rokhsati, S., Salimi-Avansar, A., Ahmadizad, S., & Ebrahim, K. (2015). The effects of six weeks of volleyball specific training on hard and soft surfaces on resting levels and responses of lactate, creatine kinase and lactate dehydrogenase to acute exercise. Journal of Sport Biosciences, 7(3), 443–454. ##Sanadgol, H. (1993). Exercise Physiology (1thed ed.). National Olympic Committee Publication. ##Sekarbabu, K., Ravindran, G., & Krishnaswamy, S. (2011). Effect of Different Environmental Volleyball Practice on Selected Biochemical and Hematological Variables. Recent Research in Science and Technology. ##Taheri, H., Rahimi, M., & Hosseinanadi, R. (2011). The study of ultrasound influence on onset muscle soreness. Daneshvar Medicine, 91(18), 53–60. ##Tofas, T., Jamurtas, A. Z., Fatouros, I., Nikolaidis, M. G., Koutedakis, Y., Sinouris, E. A., Papageorgakopoulou, N., & Theocharis, D. A. (2008). Plyometric exercise increases serum indices of muscle damage and collagen breakdown. The Journal of Strength & Conditioning Research, 22(2), 490–496. ##Trajkovic, N., Sporis, G., & Kristicevic, T. (2016). Does Training on Sand During Off Season Improves Physical Performance in Indoor Volleyball Players? Acta Kinesiologica, 10(1), 107–111. ##Twist, C., & Eston, R. (2005). The effects of exercise-induced muscle damage on maximal intensity intermittent exercise performance. European Journal of Applied Physiology, 94(5), 652–658. ##Voltman, A. (2004). The Lactate response to physical Activity. Chakameh Publication. ##Wilmore, J. H., Costill, D. L., & Gleim, G. W. (1995). Physiology of Sport and Exercise. Medicine & Science in Sports & Exercise, 27(5), 792. ##Witzke, K. A., & Snow, C. M. (2000). Effects of polymetric jump training on bone mass in adolescent girls. Medicine and Science in Sports and Exercise, 32(6), 1051–1057. ##Woods, C., Hawkins, R., Hulse, M., & Hodson, A. (2002). The Football Association Medical Research Programme: an audit of injuries in professional football—analysis of preseason injuries. British Journal of Sports Medicine, 36(6), 436–441. ##Yansen, P. (2007). The Lactate response to physical Activity. National Olympic Committee Publication.[In Persian] ##Zamparo, P., Perini, R., Orizio, C., Sacher, M., & Ferretti, G. (1992). The energy cost of walking or running on sand. European Journal of Applied Physiology and Occupational Physiology, 65(2), 183–187. ##