Step 2Keeping dumbbells close to body, bend at knees and slowly lower dumbbells toward floor. Step 3Contract hamstrings and glutes as you straighten out your legs and return to starting position. For more great exercises to improve your strength and fitness, check out: 1  Total Body Workout Routine. 2  Warm-Up Exercises.
Polyarthritis is any type of arthritis that involves 5 or more joints simultaneously. It is usually associated with autoimmune conditions and may be experienced at any age and is not gender specific.olyarthritis is most often caused by an auto-immune disorder such as rheumatoid arthritis, amyloidosis, psoriatic arthritis, and lupus erythematosus but can also be caused by infection with an alphavirus such as chikungunya virus and Ross River virus. This condition is termed alphavirus polyarthritis syndrome.
The condition is sometimes termed idiopathic immune-mediated polyarthritis, reflecting an unknown cause of the condition that involves multiple joints. Inflammation of the lining of the joints causes an increase in white blood cells in the joint fluid. This causes joint swelling and pain.