7 Days Rest

[ArlJim78]

this thread made me curious so I ran a query on my database for days since last start. this database contains about 8000 races. below are the impact values for the days 3-20. Above a value of 8, the impact values all seem to be centered about 1, with few exceptions. Impact values greater than 1 mean that the value resulted in more than its fair share of wins, less than 1 means that value underperformed compared to the whole.
with that said I found the results interesting.

days since
last race-----Impact value
___3__________2.38
___4__________1.62
___5__________1.38
___6__________0.58
___7__________0.81
___8__________0.95
___9__________0.95
__10__________1.12
__11__________0.88
__12__________0.98
__13__________1.03
__14__________1.00
__15__________1.01
__16__________0.91
__17__________0.94
__18__________1.07
__19__________0.93
__20__________1.12

starts in the 3-5 day range while rare offer solid returns.

6 and 7 days between starts noticeably underperformed, particularily 6 days.

I have my own theory as to why this is, a drop off going down to six days and then an upswing again below that point. I'd be interested to know what others think about that.

another point of interest, although probably not significant, are that the two highest days are 10 and 20. I have no clue why that would be, probably just coincidence.