Favorable though isotropic polymeric structures are in many applications, they are not optimized in some others. Janus particles, having two sides with completely different properties, are optimizing the use for these applications, from industrial emulsifiers to biomedicine. In this work, mushroom‐like Janus particles made of PS as the seed and PEA as the semispherical centers through (seeded) dispersion polymerization were synthesized. Afterward, the effects of the initiator, monomer, and stabilizer amount as well as polymerization temperature were studied. It is shown that, in the PS synthesis stage, an increase in polymerization temperature, initiator amount, and monomer amount, as well as a decrease in stabilizer amount, lead to an increase in particles' size and in PDI percentage. In addition, in the next stage, the synthesis of mushroom‐like particles with the PEA sites, an increase in initiator amount, monomer amount, and polymerization temperature, as well as a decrease in stabilizer amount lead to bigger PEA centers and in excessive amount. It is also shown that above the breakthrough, three‐part particles increase in number with the changes mentioned. It is concluded that with the determined optimized conditions in this work mushroom‐like Janus particles of PS/PEA can be synthesized.

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Objective: This study aims to assess the effect of 12 weeks of core stability exercises on functional movement and balance of women working in hospitals. Methods: Participants were 34 women aged 30-50 years working in Imam Khomeini Hospital in Tehran, Iran. They were randomly divided into two groups of exercise and control. The exercise group performed core stability exercises for 12 weeks. The functional movement was evaluated using the valid Function Movement Screen (FMS) method. The dynamic balance, power, agility, speed and flexibility of subjects were also measured using Y balance test, Sargent Jump Test, agility T-test, 20-meter running test, and seated bending forward test, respectively before and after exercise. Paired T-test was used to examine the difference between pre- and post-test scores of each group. Analysis of Covariance (ANCOVA) was used to determine the effect of intervention on the study variables. Results: Results of ANCOVA showed that 12 weeks of core stability exercises significantly improved functional movement performance, dynamic balance, power, agility, speed and flexibility in women. Conclusion: Core stability exercises can improve the performance of neuromuscular system leading to proper movement of spinal, pelvic and hip joints, proper muscle balance, enhanced proximal stability, functional strength and resulting in decreased injury.