Time to maximum serum insulin concentration (tmax) values for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from 3 milliliter (mL) blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable tmax data.

Maximum serum insulin concentration (Cmax) values for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from 3 milliliter (mL) blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable Cmax data.

Time to maximal effect for glucose infusion rate (tGIR[max]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from blood samples obtained every 3 minutes during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable tGIR(max) data.

Time to early half-maximal effect for glucose infusion rate (tGIR[early50%]) for participants who were randomized to Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable tGIR(early50%) data.

Time to late half-maximal effect for glucose infusion rate (tGIR[late50%]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) were measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Because the study was only 360 minutes in duration, there was not sufficient time for regular human insulin to show an effect and therefore tGIR(late50%) could not be calculated for participants receiving Humulin-R alone.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, or Humulin-R + rHuPH20 with evaluable tGIR(late50%) data.

Area under the serum concentration-time curve from time zero to the time required to reach endogenous plasma glucose levels (AUC[0-t']) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from 3 milliliter (mL) blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(0-t') data.

Area under the concentration-time curve from time 0 to time to reach maximum concentration (tmax) for serum insulin (Humalog or Humulin-R) with recombinant human hyaluronidase (rHuPH20) (AUC[0-tmaxPH20]) for participants who received Humalog or Humulin-R and with rHuPH20 were measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment and every 3 min from min 0 through 48 for Stage 1 and, and every 3 min from min 0 through 68 for Stage 2 during the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(0-tmaxPH20) data.

Relative bioavailability was determined by dividing the baseline-corrected geometric mean of the area under the curve (AUC) for insulin (ins) (Humalog or Humulin-R) with recombinant human hyaluronidase PH20 (rHuPH20) by the baseline-corrected geometric mean of the AUC for insulin alone (AUC[insulin+rHuPH20]/AUC[insulin]).

Bioavailability values for participants who received Humalog or Humulin-R and rHuPH20 were measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog + rHuPH20 or Humulin-R + rHuPH20 with evaluable relative bioavailability (AUC[insulin+rHuPH20]/AUC[insulin alone]) data.

Maximum glucose infusion rate (GIR[max]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase PH20 (rHuPH20) were measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 through 360 throughout the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable GIR(max) data.

The area under the curve for the glucose infusion rate from minutes (min) 0 to 60 after injection (AUC[GIR{0-60}]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) was measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 min prior to treatment and every 3 min from min 0 through 60 during the clamp procedure. Means were calculated using analysis of variance with fixed of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(GIR[0-60]) data.

The area under the glucose infusion rate curve from minutes 0 to 120 after injection (AUC[GIR{0-120}]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) was measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 minute (min) prior to treatment, every 3 min from min 0 through 60, and every 15 min from min 60 through 120 during the clamp. Means were calculated using analysis of variance with fixed effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(GIR[0-120]) data.

The area under the curve for the glucose infusion rate from minutes (min) 0 to 180 after injection (AUC[GIR{0-180}]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) was measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 min prior to treatment, every 3 min from min 0 through 60, and every 15 min from min 60 through 180 during the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(GIR[180]) data.

The area the glucose infusion rate curve from minutes (min) 0 to 240 after injection (AUC[GIR{0-240}]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) was measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 min prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 to 240 during the clamp procedure. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(GIR[240]) data.

The area under glucose infusion rate curve from minutes (min) 0 to 360 after injection (AUC[GIR{0-360}]) for participants who received Humalog or Humulin-R with or without recombinant human hyaluronidase (rHuPH20) was measured from blood samples obtained during a euglycemic clamp procedure. Samples were taken 10 and 1 min prior to treatment, every 3 min from min 0 through 60, every 15 min from min 60 through 180, and every 60 min from min 180 to 360 during the clamp. Means were calculated using analysis of variance with effects of participant, sequence within participant, treatment, and period.

Participants who received at least 1 dose of Humalog alone, Humalog + rHuPH20, Humulin-R alone, or Humulin-R + rHuPH20 with evaluable AUC(GIR[360]) data.