Final answer:
The statement about the effectiveness of a strength-training program for reducing back pain could be true, but it depends on the type of exercises and individual conditions. Low-impact exercises are shown to help stabilize joints, potentially reducing pain. Individual results from exercise programs vary and should be guided by healthcare professionals.
Step-by-step explanation:
The statement that 85 percent of people with low-back pain reported a reduction in pain after participating in a regular strength-training exercise program could be true. While the statement aligns with research that indicates low-impact exercise helps maintain strong, flexible muscles around joints, which contribute to joint stability and protection, it's important to clarify the type of exercise program being referenced.
Studies show that low-impact exercise can lessen symptoms of conditions like osteoarthritis and potentially reduce the risk of developing such conditions. However, a distinction must be made between low-impact and high-impact exercises, and what may be most beneficial for someone with back pain should be based on individual conditions and recommendations from healthcare professionals.
In the context of pain-reduction studies, like the ones evaluating the effectiveness of pain-reducing medication or the exercise impact on stress-related health problems, improvements are often measured through before and after assessments. These could involve sensory measurements, weight changes, or stress levels and often have variable results depending on individual differences.