An exercise-induced increase in insulin absorption was observed after intramuscular injection of 125I-labeled insulin actrapid (human insulin) into the thigh prior to moderate-intensity cycling (intramuscular injection: rest, 0.46 ± 0.08 vs exercise, 1.17 ± 0.14%.min−1; p < 0.001), but not after subcutaneous injection (rest, 0.31 ± 0.05 vs exercise, 0.45 ± 0.09%.min−1; p > 0.05) in people with T1D (32). The gene discussed is INS; the disease is type 1 diabetes mellitus.