Electric muscle stimulation zaps are effective for physical exercise.
Multiple clinical studies and reviews demonstrate that electric muscle stimulation (EMS/NMES) is effective for improving muscle strength, enhancing endurance, and promoting muscle hypertrophy during physical exercise or rehabilitation.
The retrieved literature consistently supports the claim that electric muscle stimulation (such as NMES or whole-body EMS) is effective for improving muscle strength, enhancing physical performance, and inducing muscle hypertrophy. Multiple studies and reviews report significant gains in muscle torque, body composition improvements, and anabolic signaling. There are no papers refuting the core claim.
Sonia Sadeghipour, Bahman Mirzaei, Georgiy Korobeynikov, Yrui Tropin. Effects of Whole-Body Electromyostimulation and Resistance Training on Body Composition and Maximal Strength in Trained Women. 2021. https://doi.org/10.34142/hsr.2021.07.02.02
Whole-body electromyostimulation combined with training significantly improved maximal strength and body composition in trained women.
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Sonia Sadeghipour, Bahman Mirzaei. Effects of whole-body electromyostimulation with two different frequencies and combined training on lipid profile and body composition in overweight women. 2022. https://doi.org/10.5114/pq.2021.103559
Whole-body electromyostimulation showed positive effects on body composition and lipid profiles in overweight women.
Xin Shu, Hongpeng Li, Ziyi Zhang, Xiaomei Luo, Yanli Han, Zihao Qiao, Shousheng Xu. Effects of combined blood flow restriction and neuromuscular electrical stimulation versus neuromuscular electrical stimulation alone on skeletal muscle hypertrophy and strength in adults: a systematic review. 2026. https://doi.org/10.3389/fphys.2026.1797485
Systematic review evidence indicates that neuromuscular electrical stimulation approaches lead to favorable long-term trends in muscle strength and morphological adaptations.
Jing Wu, Yingce Yao, Xia Wang, Jianbin Zhao, Chen Yang, Xiaoyu Wang, Zhipeng Zhou. Effects of muscle strength training combined with neuromuscular electrical stimulation on pain, function, muscle strength, patellar stress, and muscle activation during running in people with patellofemoral pain. 2025. https://doi.org/10.21203/rs.3.rs-7611495/v1
Neuromuscular electrical stimulation combined with strength training significantly improved quadriceps strength and knee function in individuals with knee pain.
Ryota Akagi, Yusuke Miyokawa, Daigo Shiozaki, Yoshinari Yajima, Koki Yamada, Kosuke Kano, Yuto Hashimoto, Takanobu Okamoto, Soichi Ando. Eight-week neuromuscular electrical stimulation training produces muscle strength gains and hypertrophy, and partial muscle quality improvement in the knee extensors.. 2023. https://doi.org/10.1080/02640414.2024.2318540
Neuromuscular electrical stimulation training produced significant increases in maximal voluntary contraction torque and muscle volume in knee extensors.
Leah K Spring, Kathleen Petrell, Joaninha Depina, Jeffrey S Dover. Use of Neuromuscular Electrical Stimulation for Abdominal and Quadriceps Muscle Strengthening: A Randomized Controlled Trial.. 2022. https://doi.org/10.1097/DSS.0000000000003368
Treatment with neuromuscular electrical stimulation led to significant improvements in abdominal and quadriceps strength and endurance.
Fabian Sanchis-Gomar, Sergio Lopez-Lopez, Carlos Romero-Morales, Nicola Maffulli, Giuseppe Lippi, Helios Pareja-Galeano. Neuromuscular Electrical Stimulation: A New Therapeutic Option for Chronic Diseases Based on Contraction-Induced Myokine Secretion.. 2019. https://doi.org/10.3389/fphys.2019.01463
Neuromuscular electrical stimulation effectively acts as a physical exercise substitute to induce muscle hypertrophy, strength gains, and myokine secretion.
Joni A Mettler, Dillon M Magee, Barbara M Doucet. High-Frequency Neuromuscular Electrical Stimulation Increases Anabolic Signaling.. 2018. https://doi.org/10.1249/MSS.0000000000001610
High-frequency neuromuscular electrical stimulation successfully upregulated key anabolic signaling proteins associated with muscle hypertrophy.
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