Gnagsåret påvirker valget av løpesko.

Because both nouns are neuter nouns in Norwegian:

• et gnagsår → gnagsåret = the chafing sore / the blister
• et valg → valget = the choice

Norwegian usually puts the definite article at the end of the noun instead of using a separate word like English the.

So:

• gnagsår = a chafing sore / a blister
• gnagsåret = the chafing sore / the blister
• valg = a choice
• valget = the choice

Påvirker is the present tense of å påvirke = to affect / influence.

So:

• å påvirke = to affect
• påvirker = affects / is affecting

In Norwegian, the present tense form does not change by person:

• jeg påvirker
• du påvirker
• han/hun påvirker
• vi påvirker

That is simpler than English, where we say I affect but it affects.

Because Norwegian often expresses definiteness by adding an ending to the noun itself.

Instead of saying something like the choice, Norwegian says valg + et = valget.

So in this sentence:

• gnagsåret already means the blister / the sore
• valget already means the choice

You do not need a separate word before them.

Valget av løpesko means the choice of running shoes or the choice when it comes to running shoes.

This structure is very common:

• valget av bil = the choice of car
• valget av navn = the choice of name
• valget av løpesko = the choice of running shoes

A compound like løpeskovalget might be understandable in some contexts, but it is less natural here. The av phrase is the normal and clear way to express what is being chosen.

Because Norwegian normally writes compound nouns as one word.

So:

• løpe = run
• sko = shoes
• løpesko = running shoes

This is very typical in Norwegian:

• fotballsko = football boots / soccer shoes
• vinterjakke = winter jacket
• solbriller = sunglasses

English often uses two words where Norwegian uses one.

Here it is plural indefinite.

• en løpesko = a running shoe
• løpesko = running shoes
• løpeskoene = the running shoes

In valget av løpesko, the idea is the choice of running shoes in a general sense, not one single shoe.

Also notice that Norwegian indefinite plurals often have no article and sometimes no ending, depending on the noun.

Because løpesko is an indefinite plural.

In English, we can say running shoes without an article, and Norwegian works similarly here.

So:

• av løpesko = of running shoes

If it were definite, it would be:

• av løpeskoene = of the running shoes

That would sound more specific, as if we are talking about a particular set of shoes.

The sentence follows normal Norwegian subject–verb–object order:

• Gnagsåret = subject
• påvirker = verb
• valget av løpesko = object

So the structure is:

The blister + affects + the choice of running shoes

This is the most straightforward word order in a main clause.

Yes, but the meaning changes slightly.

• Gnagsåret påvirker valget av løpesko.
  = The blister affects the choice of running shoes.

• Gnagsåret påvirker valg av løpesko.
  = The blister affects choice/choosing of running shoes, more generally.

Using valget makes it sound a bit more like a specific choice or decision.
Using valg is more general and abstract.

Both can be possible depending on context.

Gnagsår is a common Norwegian word for a sore caused by rubbing or friction, often from shoes. In English, depending on context, it may be translated as:

• blister
• chafing sore
• friction sore

It is a compound noun:

• gnag relates to rubbing/wearing
• sår = wound / sore

In everyday use, many learners will most naturally think of it as blister, especially in a sentence about shoes.

It can mean both, depending on context.

• affects is often the most direct translation
• influences can also work

In this sentence, affects sounds very natural:

• The blister affects the choice of running shoes

That said, Norwegian påvirke is a flexible verb and often covers both English verbs.

A rough pronunciation guide might be:

GNAG-saw-ret POH-vir-ker VAL-geh av LOO-peh-skoo

A few helpful notes:

• gnagsåret: the gn at the start may feel unusual for English speakers
• å sounds somewhat like the vowel in British more, though not exactly
• påvirker has stress on the second syllable of the root: vir
• løpesko has the Norwegian ø, which has no exact English equivalent

The natural sentence stress would usually fall on the important content words:

GNAGSÅRET påvirker VALGET av LØPESKO

Because Norwegian verbs are much simpler in this respect than English verbs.

In the present tense, Norwegian uses the same verb form for all persons and numbers:

• jeg påvirker
• du påvirker
• han påvirker
• vi påvirker
• de påvirker

So even though gnagsåret is singular, the verb still stays påvirker. There is no special extra -s type ending like English affects.