Ibrox side Glasgow Rangers got their league campaign off to a winning start last weekend.
Caixinha was under the impression that he would be locked in many tactical battles when he took charge of Rangers.
However, the Portuguese boss has found that Rangers have often simply had to scrap for three points since he became manager at Ibrox.
He said: “It’s definitely much more [physical] than I was expecting.
“When I was here, for example, on the coaching courses to take my badges I understood them to be really tactically orientated.
“I [understood from that] that Scottish football is dominated by tactics. For me, tactics should be dominant but, in the real world, it looks like physicality is the main content of the majority of the Scottish teams.
“I’m not against or for; it’s just a different way to see the game.
Rangers’ fighting spirit was on display last weekend, when they beat Motherwell 2-1 in their first Scottish Premiership match of the new campaign.
Motherwell took on a direct style against Rangers, and were very physical in the challenge, but Rangers stood up to the threat throughout.
Rangers scored both their goals in the contest through debutant Graham Dorrans to pick up an important three points.
Caixinha’s side are next in action later this evening, when they take on Dunfermline in the Scottish League Cup.
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