De or het aquajogging?

The correct Dutch article is:

de aquajogging

Rule Words ending in -ing: almost always de. See the rule
Meaning (Dutch) lopen of joggen in het water. Het is een intensieve vorm van cardiotraining waarbij je hardloopbewegingen nabootst in diep water, zonder dat je de bodem raakt.

How to use aquajogging

the aquajoggingde aquajogging
this aquajoggingdeze aquajogging
that aquajoggingdie aquajogging
our aquajoggingonze aquajogging
your aquajoggingjouw aquajogging
every aquajoggingelke aquajogging
which aquajogging?welke aquajogging?
a big aquajogging / the big aquajoggingeen grote aquajogging, de grote aquajogging

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).