{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T13:03:46Z","timestamp":1784120626053,"version":"3.55.0"},"reference-count":29,"publisher":"Journal of Sports Science and Medicine","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["jsportscimed"],"abstract":"<jats:p>&lt;p&gt;Many non-local muscle fatigue studies utilize continuous isometric contractions to induce unilateral fatigue and assess contralateral limb strength and endurance. The present study aimed to investigate the effects of dynamic unilateral lower-limb fatigue on contralateral lower-limb and upper-body explosive performance. Eighteen healthy adults (30.3 \u00b1 9.3 years) completed sessions involving continuous exercise performed to induce fatigue (1 min of unilateral hopping), intermittent exercise performed to induce fatigue (two 30-s bouts of unilateral hopping), and a non-active control. Explosive performance was measured before the intervention and at 1, 5, and 10 min post-intervention using repeated single-leg hops (10 repetitions) and rebound push-ups (5 repetitions). Significant interactions showed that contralateral hop height (p = 0.048), reactive strength index (p = 0.003), and lower-limb power (p &amp;lt; 0.001) were significantly reduced 1 min post-exercise after unilateral continuous hopping. Hop height and power remained significantly lower at 5 min post-exercise (p = 0.03 and p = 0.008, respectively). In contrast, intermittent hopping did not induce significant contralateral lower-limb impairments but resulted in higher upper-body ratings of perceived exertion 1 min post-exercise compared with pre-exercise (p = 0.017) and 5 min post-exercise (p = 0.008). In conclusion, continuous unilateral hopping transiently impairs contralateral lower-limb explosive performance, whereas upper-body explosive performance remained unaffected. Intermittent hopping increases upper-body perceived exertion without affecting contralateral performance. These findings highlight the task-specific and structure-dependent nature of non-local fatigue.&lt;\/p&gt;<\/jats:p>","DOI":"10.52082\/jssm.2026.656","type":"journal-article","created":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T12:04:51Z","timestamp":1784117091000},"page":"656-664","source":"Crossref","is-referenced-by-count":0,"title":["Dominant Leg Continuous Unilateral Hopping Impairs Contralateral Leg But Not Upper Body Explosive Performance"],"prefix":"10.52082","author":[{"given":"Mahta","family":"Sardroodian","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiwa","family":"Rahmani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David G.","family":"Behm","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"29163","published-online":{"date-parts":[[2026,9,1]]},"reference":[{"key":"ref0","unstructured":"Aboodarda, S. J., Copithorne, D. B., Pearcey, G. E. P., Button, D. C., Power, K. E. (2015) Changes in supraspinal and spinal excitability of the biceps brachii following brief, non-fatiguing submaximal contractions of the elbow flexors in resistance-trained males. Neuroscience Letters 607, 66-71."},{"key":"ref1","unstructured":"Behm, D.G., Konrad, A., Nakamura, M., Alizadeh, S., Culleton, R., Hadjizadeh Anvar, S., Pearson, L.T., Ramirez-Campillo, R., Sale, D.G. (2024) A narrative review of velocity-based training best practice: The importance of contraction intent vs. movement speed. Applied Physiology, Nutrition, and Metabolism."},{"key":"ref2","unstructured":"Borg, G.A.V. (1982) Psychophysical bases of perceived exertion. Medicine &#x0026; Science in Sports &#x0026; Exercise 14, 377-381."},{"key":"ref3","unstructured":"Bredin, S., Jamnik, V., Gledhill, N., Warburton, D. (2025) The PAR-Q&#x002B; and ePARmed-X&#x002B;. The Health &#x0026; Fitness Journal of Canada 18, 75-79."},{"key":"ref4","unstructured":"Duchateau, J., Balestra, C., Carpentier, A., Hainaut, K. (2002) Reflex regulation during sustained and intermittent submaximal contractions in humans. Journal of Physiology 541, 959-967."},{"key":"ref5","unstructured":"Duffett, C. A., Wiseman, S. A., Punjabi, A., Power, K. E., Behm, D. G. (2021) Contralateral muscle fatigue from slow, isokinetic contractions is not velocity-specific. The Journal of Sport and Exercise Science."},{"key":"ref6","unstructured":"Ebben, W. P., Wurm, B., VanderZanden, T. L., Spadavecchia, M. L., Durocher, J. J., Bickham, C. T., Petushek, E. J. (2011) Kinetic analysis of several variations of push-ups. Journal of Strength and Conditioning Research 25, 2891-2894."},{"key":"ref7","unstructured":"Gandevia, S.C. (2001) Spinal and supraspinal factors in human muscle fatigue. Physiological Reviews 81, 1725-1789."},{"key":"ref8","unstructured":"Gouvali, M.K., Boudolos, K. (2005) Dynamic and electromyographical analysis in variants of push-up exercise. Journal of Strength and Conditioning Research 19, 146-151."},{"key":"ref9","unstructured":"Halperin, I., Aboodarda, S.J., Behm, D.G. (2014a) (2014a) Knee extension fatigue attenuates repeated force production of the elbow flexors. European Journal of Sport Science 14, 823-829."},{"key":"ref10","unstructured":"Halperin, I., Chapman, D.W., Behm, D.G. (2015) Non-local muscle fatigue: effects and possible mechanisms. European Journal of Applied Physiology 115, 2031-2048."},{"key":"ref11","unstructured":"Aboodarda, S.J., &#x0160;ambaher, N., Millet, G.Y., Behm, D.G. (2017) Knee extensors neuromuscular fatigue changes the corticospinal pathway excitability in biceps brachii muscle. Neuroscience 340, 477-486."},{"key":"ref12","unstructured":"Halperin, I., Copithorne, D., Behm, D.G. (2014b) (2014b) Unilateral isometric muscle fatigue decreases force production and activation of contralateral knee extensors but not elbow flexors. Applied Physiology, Nutrition, and Metabolism 39, 1338-1344."},{"key":"ref13","unstructured":"Li, Y., Power, K.E., Marchetti, P.H., Behm, D.G. (2019) The effect of dominant first dorsal interosseous fatigue on the force production of a contralateral homologous and heterologous muscle. Applied Physiology, Nutrition, and Metabolism 44, 704-712."},{"key":"ref14","unstructured":"Martin, P.G., Rattey, J. (2007) Central fatigue explains sex differences in muscle fatigue and contralateral cross-over effects of maximal contractions. Pfl&#x00FC;gers Archiv - European Journal of Physiology 454, 957-969."},{"key":"ref15","unstructured":"Miller, W., Kang, M., Jeon, S., Ye, X. (2019) A meta-analysis of non-local heterologous muscle fatigue. Journal of Trainology 8, 9-18."},{"key":"ref16","unstructured":"Power, G. M. J., Colwell, E., Hole Saeterbakken, A., Drinkwater, E. J., Behm, D. G. (2021) Lack of evidence for non-local muscle fatigue and performance enhancement in young adults. Journal of Sports Science and Medicine 20, 339-348."},{"key":"ref17","unstructured":"Rattey, J., Martin, P. G., Kay, D., Cannon, J., Marino, F. E. (2006) Contralateral muscle fatigue in human quadriceps muscle: evidence for a centrally mediated fatigue response and cross-over effect. Pfl&#x00FC;gers Archiv - European Journal of Physiology 452, 199-207."},{"key":"ref18","unstructured":"&#x0160;ambaher, N., Aboodarda, S.J., Behm, D.G. (2016) Bilateral knee extensor fatigue modulates force and responsiveness of the corticospinal pathway in the non-fatigued, dominant elbow flexors. Frontiers in Human Neuroscience 10, 18."},{"key":"ref19","unstructured":"Whitten, J. H. D., Hodgson, D. D., Drinkwater, E. J., Prieske, O., Aboodarda, S. J., Behm, D. G. (2021) Unilateral quadriceps fatigue induces greater impairments of ipsilateral versus contralateral elbow flexors and plantar flexors performance in physically active young adults. Journal of Sports Science and Medicine 20, 300-309."},{"key":"ref20","unstructured":"Zahiri, A., Goudini, R., Alizadeh, S., Daneshjoo, A., Mahmoud, M. M. I., Konrad, A., Granacher, U., Behm, D. G. (2024) The duration of non-local muscle fatigue effects. Journal of Sports Science and Medicine 23, 425-435."},{"key":"ref21","unstructured":"Zijdewind, I., Zwarts, M.J., Kernell, D. (1998) Influence of a voluntary fatigue test on the contralateral homologous muscle in humans? Neuroscience Letters 253, 41-44."},{"key":"ref22","unstructured":"Arora, S., Budden, S., Byrne, J.M., Behm, D.G. (2015) Effect of unilateral knee extensor fatigue on force and balance of the contralateral limb. European Journal of Applied Physiology 115, 2177-2187."},{"key":"ref23","unstructured":"Baker, A.J., Kostov, K.G., Miller, R.G., Weiner, M.W. (1993) Slow force recovery after long-duration exercise: metabolic and activation factors in muscle fatigue. Journal of Applied Physiology 74, 2294-2300."},{"key":"ref24","unstructured":"Bartolomei, S., Grillone, G., Di Michele, R., Cortesi, M. (2021) A comparison between male and female athletes in relative strength and power performances. Journal of Functional Morphology and Kinesiology 6, 1."},{"key":"ref25","unstructured":"Behm, D.G. (2004) Force maintenance with submaximal fatiguing contractions. Canadian Journal of Applied Physiology 29, 274-290."},{"key":"ref26","unstructured":"Behm, D. G., Alizadeh, S., Hadjizadeh Anvar, S., Drury, B., Granacher, U., Moran, J. (2021a) (2021a) Non-local acute passive stretching effects on range of motion in healthy adults: A systematic review with meta-analysis. Sports Medicine 51, 945-959."},{"key":"ref27","unstructured":"Behm, D. G., Alizadeh, S., Drury, B., Granacher, U., Moran, J. (2021b) (2021b) Non-local acute stretching effects on strength performance in healthy young adults. European Journal of Applied Physiology 121, 1517-1529."},{"key":"ref28","unstructured":"Behm, D. G., Alizadeh, S., Hadjizedah Anvar, S., Hanlon, C., Ramsay, E., Mahmoud, M. M. I., Whitten, J., Fisher, J. P., Prieske, O., Chaabene, H., Granacher, U., Steele, J. (2021c) (2021c) Non-local muscle fatigue effects on muscle strength, power, and endurance in healthy individuals: A systematic review with meta-analysis. Sports Medicine 51, 1893-1907."}],"container-title":["Journal of Sports Science and Medicine"],"original-title":[],"language":"en","deposited":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T12:04:52Z","timestamp":1784117092000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.jssm.org\/jssm-25-656.xml-Fulltext"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,1]]},"references-count":29,"URL":"https:\/\/doi.org\/10.52082\/jssm.2026.656","archive":["Internet Archive"],"relation":{},"ISSN":["1303-2968"],"issn-type":[{"value":"1303-2968","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,1]]}}}