NATIONWIDE, (WOWO) – Core Health & Fitness of Vancouver, Wash., is recalling about 3,600 exercise machines, according to Consumer Affairs.

The company has received 48 reports of the height-adjusting assemblies loosening and falling, resulting in 31 reports of injuries.

Some reported injuries required staples or stitches.

The recall involves five styles of Inspiration Cable Cross Over and Dual Adjustable Pulley machines.

The units are stainless steel adjustable pulleys with single hand adjustment designs and high-low cable positioning options.

“Inspiration” is printed on each Dual Adjustable Pulley model, and “Star Trac” and “Nautilus” is printed on the Cable Cross Over models.

The machines were manufactured in the U.S. and China, and were sold by Core nationwide from November 2010 through April 2017.

The machines were also sold by Unisen distributors from 2001 to 2010.

Many of the machines are installed in fitness centers and gyms.

If you own one of these machines, stop using it immediately and contact Core Health & Fitness to schedule a free onsite repair at 800-598-8541 from 6 a.m. to 5 p.m. (PT) Monday through Friday.