die Muskulatur
musculature
The entirety of the muscles of a living being or of a specific part of the body.
Regelmäßiges Training ist wichtig, um die Rückenmuskulatur zu stärken.
Regular training is important for strengthening the back muscles.

musculature
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musculature
The entirety of the muscles of a living being or of a specific part of the body.
Regelmäßiges Training ist wichtig, um die Rückenmuskulatur zu stärken.
Regular training is important for strengthening the back muscles.

The word is derived from 'der Muskel' (muscle). The ending '-atur' often refers to a system or a whole, here meaning the entirety of all muscles.
Eine gut ausgebildete Muskulatur schützt die Gelenke.
Well-developed musculature protects the joints.
'Muskulatur' (musculature) is a collective term and is almost always used in the singular, even when talking about many muscles. A plural form ('Muskulaturen') is very rare.
Die gesamte Beinmuskulatur war nach dem Marathon erschöpft.
The entire leg musculature was exhausted after the marathon.
Common verbs used in connection with Muskulatur (musculature) are 'stärken' (to strengthen), 'aufbauen' (to build up), 'lockern' (to loosen), or 'entspannen' (to relax). Adjectives are often 'schwach' (weak), 'stark' (strong), or 'verspannt' (tense).
Mit diesen Übungen können Sie gezielt Ihre Bauchmuskulatur aufbauen.
With these exercises, you can specifically build up your abdominal muscles.
muscle
'Muskel' and 'Muskulatur' both belong to the body and have to do with movement. A 'Muskel' is one individual part of the body, for example in the arm or leg. 'Muskulatur' means the total set of muscles, either in the whole body or in a specific area. Learners may confuse the words because both talk about the same body system. When a specific muscle hurts or is being trained, you say 'Muskel'. When you are talking about several muscles or an area of the body, 'Muskulatur' sounds more precise.

Mit diesen Übungen stärkt man die Muskulatur im Rücken.
These exercises strengthen the muscles in the back.
Nach dem Training tut mir ein Muskel im rechten Bein weh.
After training, a muscle in my right leg hurts.