en مراقبت‌های پرستاری جانبازان يا معلولان Nursing Care for Veterans or Handicapped پژوهشی اصيل Original Research <span style="font-size:12pt"><span style="line-height:normal"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif"><span style="color:#f79646">Aims:</span></span></span></b> <span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif">This study aimed to examine the effects of resistance training with and without vitamin D supplementation on muscle strength, walking speed, and muscle mass in elderly women with sarcopenia.</span></span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif"><span style="color:#f79646">Materials & Methods:</span></span></span></b> <span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif">In this semi-experimental study with a pre-test and post-test design, 40 elderly women with sarcopenia (mean age=62.60 &plusmn; 3.27 years) from Aligoudarz City were randomly assigned to four groups, including resistance training+vitamin D, resistance training only, vitamin D only, and control (n=10 each). Resistance training was conducted over 24 sessions, while supplementation groups received vitamin D (50,000IU weekly). Muscle strength, walking speed, and muscle mass were measured before and after the intervention. Data were analyzed using t-tests and one-way ANOVA with Duncan&rsquo;s post hoc test at &alpha;=0.05.</span></span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif"><span style="color:#f79646">Findings:</span></span></span></b> <span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif">Resistance training, with or without vitamin D supplementation, significantly improved muscle strength, walking speed, and muscle mass in elderly women with sarcopenia (p<0.001). However, no significant differences were observed between the combined intervention (resistance training+vitamin D) and resistance training alone in these physical fitness outcomes (p&ge;0.05).</span></span><span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif"></span></span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif"><span style="color:#f79646">Conclusion:</span></span></span></b> <span style="font-size:10.0pt"><span style="font-family:&quot;Cambria&quot;,serif">Resistance training significantly improves muscle strength, walking speed, and muscle mass in elderly women with sarcopenia, and vitamin D supplementation provides no additional benefit beyond resistance training alone.</span></span></span></span></span></span><br> &nbsp; Sarcopenia, Resistance Training , Vitamin D , Aging 391 397 http://ijwph.ir/browse.php?a_code=A-10-2138-3&slc_lang=en&sid=1 P. Nemati 15300319475328460028737 15300319475328460028737 No Department of Physical Education, Aligoudarz Campus (Al.C.), Islamic Azad University, Aligoudarz, Iran H. Barzegari Marvast 15300319475328460028738 15300319475328460028738 No Department of Physical Education and Sports Sciences, Faculty of Psychology and Educational Sciences, Yazd University, Yazd, Iran Z. Mosayebi 15300319475328460028739 15300319475328460028739 Yes Department of Physical Education, Aligoudarz Campus (Al.C.), Islamic Azad University, Aligoudarz, Iran