Quadratus Lomborum: Lower back muscles.
Quadriceps: A.K.A. thigh muscles. A group of four muscles: Rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius.
R.I.C.E.: The "RICE" method helps you control pain and swelling. RICE lessens the side effects of an injury. RICE means rest, ice, compression, and elevation. Severe or persistent pain and continued swelling means it's time to seek medical attention.
Reaction time: From the moment you think about starting your movement, until your muscles take action.
Reciprocal Inhibition: When you contract a muscle group, the opposite muscle group (antagonist) automatically relaxes.
Rectum: This is the final segment of your gastrointestinal tract. It is located between your sigmoid colon and anus.
Rectus Abdominis: Your abdominals consist of several muscle groups. Your rectus abdominis is a long strap-like muscle extending from your lower-middle ribcage to your pubis. It lifts you into a sitting position each morning. It is your "six pack."
Regular exercise can help control high blood pressure. A few sessions of moderate physical activity each week can reduce blood pressure significantly, and at the same time, lower your risk of stroke and heart attack. If your blood pressure is just mildly elevated, exercise, along with a healthy diet, and stress management, may be enough to bring it down. If you require medication, exercise will probably make it more effective, and possibly allow you to lower the dosages with your doctors recommendation.
Relaxed Concentration: An alpha brain wave pattern where your mind and body are relaxed, but you are exquisitely focused on your task at hand.
Remodeling: Your body’s way of systematically removing old bone tissue and replacing it with new. This preserves the strength of your skeleton.
Rest-Pause: Pausing at the bottom of each repetition of your set for just an instant to recruit more muscle fibers.
Retina: The innermost layer of your eye. It converts light energy to electrical energy. It sends visual images to your brain through the connecting optic nerve.
Retinal Detachment: A condition in which the retina separates from the choroid. Often seen in boxers.
Rheumatoid Arthritis: Rheumatoid arthritis is an inflammatory autoimmune disease. It can strike folks aged 30 to 40, but most frequently attacks people in their 50’s and 60’s. Rheumatoid arthritis is more common in women. It is more serious than osteoarthritis because it can assault other tissues in your body, not just your joints.
Rheumatologist: A doctor trained to diagnose and treat joints and other parts of the musculoskeletal system.
Rhomboids: These are the muscles between your shoulder blades. These muscles help you to keep your shoulders back.
Rolfing: The massage technique called rolfing was designed to fight the effects of gravity. Some folks with back and neck problems say it releases their tension and relieves their pain.
Rotator Cuff Muscles: Supraspinatus, infraspinatus, teres minor, and subscapularis.
Rotator Cuff: The rotator cuff is four muscles with a common tendon. Their function is to internally rotate(backhand in tennis) and externally rotate (throwing motion) your arm. Your rotator cuff is an important stabilizer of your shoulder during any throwing motion.
Rowing Machines: Novice rowers glide on the forward, eccentric, movement so that there is too much rest to provide an excellent training effect.
Rubella: A.K.A. german measles.
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