Regionally time-dependent midsole

1. A golf shoe comprising:

an upper; and

a sole assembly connected to the upper, the sole assembly comprising:

an outsole; and

a midsole having a forefoot area, a rearfoot area, and a midfoot area between the forefoot area and the rearfoot area, and comprising:

a lateral region constructed of a first material positioned at least in the rearfoot area; and

a medial region constructed of a second material positioned at least in the rearfoot area, wherein:

the first material compresses to a maximum compression of the first material within a first time period; and

the second material compresses to the maximum compression of the first material within the first time period and compresses to a maximum compression of the second material within a second time period,

wherein the lateral region is joined at a mediolateral angle to the medial region.

2. The golf shoe of claim 1 , wherein the maximum compression of the second material is higher than the maximum compression of the first material.

3. The golf shoe of claim 1 , wherein the maximum compression of the first material is in a range of 15%-30% compression of an unloaded thickness of the lateral region.

4. The golf shoe of claim 1 , wherein the maximum compression of the second material is in a range of greater than 55% compression of an unloaded thickness of the medial region.

5. The golf shoe of claim 1 , wherein the first time period is less than 1 second.

6. The golf shoe of claim 1 , wherein the second time period is in a range of 2.5 seconds-6.0 seconds.

7. The golf shoe of claim 1 , wherein:

the first material is an elastic material longitudinally traversing the length of the lateral region of the sole; and

the second material is a viscoelastic material longitudinally traversing the length of the medial regional of the sole.

8. The golf shoe of claim 1 , wherein:

the first material decompresses to an unloaded thickness of the lateral region within a third time period; and

the second material decompresses to an unloaded thickness of the medial region within a fourth time period, wherein the fourth time period is longer than the third time period.

9. A regionally time-dependent midsole for a golf shoe, the midsole having a forefoot area, a rearfoot area, and a midfoot area between the forefoot area and the rearfoot area, and comprising:

a lateral region constructed of a first material positioned at least in the rearfoot area and in the forefoot area; and

a medial region constructed of a second material positioned at least in the rearfoot area and forefoot area, wherein when the midsole is under a load:

the lateral region compresses to a maximum compression of the first material and the medial region compresses to the same maximum compression of the first material within a first time period; and

the medial region compresses to a maximum compression of the second material within a second time period,

wherein the lateral region is joined at a mediolateral angle to the medial region.

10. The midsole of claim 9 , wherein:

the maximum compression of the second material is higher than the maximum compression of the first material; and

the second time period is longer than the first time period.

11. The midsole of claim 9 , wherein the midsole is configured so that an everted support angle is formed relative to a ground surface when the midsole is on the ground surface and under the load for the second time period.

12. The midsole of claim 9 , wherein:

the first material is an elastic foam material; and

the second material is a viscous foam material.

13. The midsole of claim 9 , wherein the midsole is configured so that a neutral support angle is formed by the midsole relative to a ground surface when the midsole is on the ground surface and the lateral region and the medial region compress to the maximum compression of the first material within the first time period.

14. The midsole of claim 9 , wherein:

the first material decompresses to an unloaded thickness of the lateral region within a third time period; and

the second material decompresses to an unloaded thickness of the medial region within a fourth time period, wherein the fourth time period is longer than the third time period.

15. A method for making the golf shoe of claim 1 , the method comprising:

constructing the upper;

constructing the outsole;

constructing the lateral region of the midsole using the first material;

constructing the medial region of the midsole using the second material, wherein the maximum compression of the second material is higher than the maximum compression of the first material;

attaching the lateral region to the medial region of the midsole;

generating a sole assembly by attaching the midsole to the outsole; and

attaching the upper to the sole assembly.

16. The method of claim 15 , wherein:

the first material is in a range of 15%-30% compression of an unloaded thickness of the lateral region; and

the maximum compression of the second material is in a range of greater than 55% compression of an unloaded thickness of the medial region.

17. The method of claim 15 , wherein attaching the lateral region to the medial region of the midsole comprises joining the lateral region to the medial region at the mediolateral angle.

18. The method of claim 15 , wherein:

the first material decompresses to an unloaded thickness of the lateral region within a third time period; and

the second material decompresses to an unloaded thickness of the medial region within a fourth time period, wherein the fourth time period is longer than the third time period.