Ключевые слова: 7079 years, active seniors, adult, adults only, aging process, color image, displeased, effort, emotional stress, healthcare and medicine, healthy lifestyle, holding, horizontal, human body part, human bone, human joint, human leg, human limb, human tissue, illness, joint body part, knee, lifestyles, limb body part, males, medical condition, men, meniscus, negative emotion, one man only, one person, one senior man only, only men, outdoors, overworked, pain, people, persons with disabilities, physical activity, physical disability, physical injury, problems, public park, retirement, senior adult, senior men, serbia, staircase, steps, symptom, touching, uncomfortable, unrecognizable person, white people, working seniors, worried,