Metabolic Flexibility & Nutrient Partitioning Diagnostic
Serological Markers
Analysis:
As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.
Commit to Streak Lab →Operational Protocol
The HOMA-IR Standard
The Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) is the premier metric for tracking metabolic health. For athletes 50+, a score below 1.5 indicates high metabolic flexibility—meaning your body partitions nutrients toward muscle recovery rather than visceral fat storage.
The Masters Athlete Edge
Insulin sensitivity often declines with age, but high-intensity training creates a "glucose sink" in skeletal muscle. By tracking this lab, you can adjust carbohydrate timing around training windows to maximize anabolism while maintaining low systemic inflammation.
Diagnostic Disclaimer: HOMA-IR requires accurate fasting blood work. A single high reading may be an outlier; consistent longitudinal tracking via The Streak Lab is recommended for accurate metabolic profiling.