Use the definite article.
The following does not include the Comunicación section.
sports
race
helmet
competition
coach; trainer
team; equipment
skiing
the stadium
American football
Olympic Games
player
swimming
game, match
skates
skating
skateboard
ball
weights
swimming pool
athlete
baseball
racket
tennis
volleyball
health
wellbeing
height
change
piece of information
pain
illness
fever
measurement
weight
blood pressure
complaint
blood
symptom
cough
to gain weight
to lose weight
to change
to hurt, to ache
to not feel well
to get sick
to measure
to get better
to complain
to suffer from
to be allergic to
to take down information (medical intake)
allergies
asthma
depression
infection
insomnia
temperature
to skateboard
to box
to hope; to wait (for)
to ski
to win
to do/go mountaineering (mountain climbing)
to play
to lift weights
to get in shape
to stay in shape
to stay healthy
to ice skate
to recommend
to surf
to be successful
I hope that
to advise
to demand
to insist
to order / to command
to permit
to prefer
to prohibit
to be important
to be better
to suggest