Intervention — any acute study assessing the muscle activity of
the deltoids during the bench press exercise
Not exact matches
Studies have shown that the
deltoids are much less involved
during the decline
bench press, compared to the horizontal
bench press.
Since the front
deltoids are a very small muscle compared to the huge pectoralis major of the chest, it stands to reason that
during the
bench press the
deltoids of your shoulders will fatigue way before your chest even starts to get a proper workout.
EMG studies reveal that the front
deltoids receive the same stimulation as the pectoralis major of the chest
during the flat
bench press.
Comparing four different angles of the
bench used
during the narrow grip
bench press, Barnett et al. (1995) found a main difference in anterior
deltoid muscle activity between -18 degrees and the other steeper angles (0, 40 and 90 degrees).
McCaw & Friday (1994) also found that the middle
deltoid muscle activity was significantly greater
during the free - weight
bench press compared with the Smith machine version.
For example, middle (but not anterior)
deltoid activation tends to be greater
during free weight
bench presses compared to Smith machine
bench presses (Schick et al. 2010).
In contrast, McCaw et al. (1994) found greater middle
deltoid muscle activity
during the free weight
bench press compared with the machine
bench press at 60 % 1 RM but not at 80 %, although in both cases the middle
deltoid muscle activity was approximately half that of the anterior
deltoid.