Complex sentence: It has aided in decreasing bone resorption and increasing bone formation as indicated by decreases in levels of bone resorption markers (deoxypyridinoline and N-telopetides) along with increases in levels of bone formation markers (osteocalcin and alkaline phosphatase).
Split into simpler sentences: It has aided in decreasing bone resorption and increasing bone formation. This was indicated by a decrease in the levels of two bone resorption markers (deoxypyridinoline and N-telopeptide) and an increase in the levels two bone formation markers (osteocalcin and alkaline phosphatase).