Control group participants will first be given initial evaluations and verbal physical activity recommendations will be given. Patients will be contacted by phone at the 2nd, 4th and 6th weeks and reminded about the importance of physical activity.

Heart rate will be measured with a calibrated digital sphygmomanometer from the calibration unit. Participants will have their blood pressure measured in the morning after taking their current blood pressure medication. Participants will rest in a sitting position for 5 minutes before the measurement. The average of the two SDB and BP measurements will be recorded.

The Bridge Building Test will be used to assess spinal stabilisation endurance. Participants were asked to lift their hips off the bed in the supine position and maintain the position without breaking the position. The time they maintain the position will be recorded in seconds.

Stabilisation ability of deep spinal muscles will be evaluated by using "The Stabilizer Pressure Biofeedback Unit" (BGU). The BGU is a device designed by physiotherapists that shows the pressure change in a cell that is filled with air and pressurised. The stabiliser is used to monitor, measure and provide feedback on the movement of the relevant body segment. During the test, participants are asked to lie face down with their head turned to one side. The three-chamber pressure cell of the device is placed in the lower part of the abdominal region and in the centre of the spina iliaca anterior superior. Once the pressure of the manometer is inflated to 70 mmHg, the participants are asked to pull the abdominal wall inwards without any spinal or pelvic movement, as previously taught. Pressure readings for measurement are taken 3 times in succession for 10 seconds.

5 repetition sit and stand test (5TOKT): It is a performance test in which dynamic balance is evaluated by recording the performance of the individuals to sit and stand on a chair 5 times serially in terms of time. To measure the 5TOKT time, the participants are asked to sit on a chair that is not fixed to the floor, without armrests, 45 cm high, with a flat back and a hard floor, with their backs touching the back of the chair and their hands crossed in front of their torso. The participants sit on and off the chair 5 times as fast as they can following the 'Go' command of the assessor

Hand grip strength will be evaluated with a hand dynamometer (Saehan hydraulic dynamometer). The measurement will be made in the dominant hand. Grip strength measurements for the dominant hand of the volunteers will be taken three times and the highest value in kilograms (kg) will be recorded for statistical evaluation. There will be a break of at least one minute between each trial.

The Time Up and Go Test (TUG) will be used to measure functional mobility and balance in individuals. It is a practical method that does not require equipment. During the test, the participant sits in the chair at the beginning, gets up from the chair with the start command, goes to the place marked 3 m ahead, returns and sits back in the chair. The time is recorded in seconds

The EQ-5D Quality of Life Scale will be used to assess the quality of life of the participants. It consists of five dimensions including mobility, self-care, usual activities, pain/discomfort and anxiety/depression. The answers to each dimension have 3 options: no problem, some problem and major problem. The index values of the scale are calculated on the computer using an excel format prepared by the Euro Quality of Life group based on formulae calculated from different population samples. The answers obtained from these patients are placed on this programme.

It is the calculation of individual-specific index values ranging between 0 and 1. In index scores, a value of 0 indicates death and a value of 1 indicates perfect health. The scale developers did not specify minimum and maximum values.

Healthy life profile will be evaluated with the Healthy Lifestyle Behaviours Scale. The scale was developed by Walker et al. The scale was revised in 1996 and named as Healthy Lifestyle Behaviours Scale-II. The Turkish validity and reliability study was conducted by Bahar et al. in 2008. The scale has 52 items and consists of six factors. These are health responsibility, physical activity, nutrition, spiritual development, interpersonal relationships and stress management. The scale rating is in 4-point Likert type. Never (1), sometimes (2), frequently (3) and regularly (4) are accepted. The lowest score that can be obtained from the whole scale is 52 and the highest score is 208.

Nottingham Extended Activities of Daily Living (NADL) for assessing GYA Index (NGGYA) will be used. It consists of 22 questions. All questions are answered on a scale from 0 to 3 points. It has 4 subscales; movement, in the kitchen, housework, leisure activities. The sum of these 4 subscales gives the total score. The highest possible score is 66. Turkish validity and reliability study was conducted by Şahin et al.

Physical activity level was evaluated with the Turkish version of the International Physical Activity Questionnaire-7, whose reliability and validity. The International Physical Activity Questionnaire-7 is a seven-item questionnaire that assesses severe physical activity (duration: min and frequency: day), moderate physical activity (duration: min and frequency: day), and walking time of at least 10 minutes (frequency: day) over the previous seven days. The metabolic equivalent of task (MET) corresponding to the basal metabolic rate is converted from severe and moderate activity and walking periods, and the overall physical activity score (MET- min/week) is determined. Higher scores indicate higher levels of physical activity. There is no minimum or maximum value since it depends on performance in daily life.

Heart Health Self-Efficacy and Self-Management Scale was developed by Maria Mares et al. It is a 12-item scale that can evaluate the concepts of self-efficacy and self-effectiveness, which are prominent in disease management. Both English and Arabic languages were used in the scale development study. Turkish adaptation study (Karamanoğlu Mehmetbey University Faculty of Medicine Ethics Committee Decision No 04-202l/04) Süygün et al. A minimum of 0 and a maximum of 48 points can be obtained. Higher scores indicate better self-efficacy and self-management.