Simple massage and stretching tested for dialysis cramps

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18 years of age and over, conscious, Turkish speaking and understanding, accepting the research, * Patients with normal body mass index (18.5-24.9) \[Since body mass can affect the distribution of vibration and cortisol level, it was planned to include patients with normal body mass index in the sample\]. * Patients with intradialytic muscle cramp in the lower extremities will be included \[Although intradialytic cramp often occurs in the lower extremities, vibration massage and static stretching exercise will be applied to the same muscle group (gastrocnemius and soleus muscles) in the lower extremities to keep the variables under control\]. Exclusion Criteria: * Intradialytic muscle cramps in the upper extremity, * Intradialytic muscle cramps, those with incomplete tissue integrity in the region and thrombophlebitis, hematoma, etc. \[In order for vibration massage to be performed, individuals must have skin integrity and normal blood characteristics.\] * Those with foot deformation, * Those who use anti-inflammatory, analgesic drugs and those who additionally use adjuvant therapy (antidepressants, anticonvulsants, muscle relaxants, etc.) up to 4 hours before the HD session, as intradialytic muscle cramps and their duration may be affected, * Those who are taking routine cortisone treatment and medications with hormonal effects (oral contraceptives, steroid-containing bronchodilators, etc.) so that the salivary cortisol test is not affected. --Alcohol users, * Hypoglycemic patients, * Patients with psychiatric diagnosis and those using medication related to this diagnosis, * Patients with mouth ulcers, inflammation, etc. * Patients who ate or drank anything other than water, chewed gum, or consumed foods or beverages containing citric acid 15 minutes before intradialytic muscle cramping, * Patients who use high doses of biotin (\>5 mg/day) and whose last biotin treatment has not passed 8 hours.