|NEMS devices are usually marketed as "ab trainers" - do you own one?|
Plug an NMES device into your convenient outlet, attach it to your biceps, sit down conveniently in front of your television screen and have the device train your muscles.
You don't believe that this works? Well, basically this is what the seven healthy male subjects who were recruited for the study did at the laboratory. The participants were trained two times per week (three subjects: Mondays and Thursdays; and four subjects: Tuesdays and Fridays) for 12 weeks. Each exercise session was performed for 30 min with no rest interval.
I am not sure if this hurts, but based on my experience with a friends NMES ab trainer, I suppose it did... not convenient, ok, but still better than actually moving for most of the the members of the convenience generation, I'd guess - And I mean, you can't argue with results, right?
"During the training, the subject was required to maintain a shoulder joint angle of 90° in the sagittal plane. The electrical stimulation (pulse width: 200μs; and frequency: 20 Hz (Dreibati et al., 2010)) was delivered through a pair of 5 × 5 cm gelcoated electrodes attached to the region of the biceps brachii muscle belly. The magnitude of the stimulation was determined as the subject's maximum comfortable current level, but no more than 80 mA, with complete elbowflexion from the fully extended state; the mean value was 57.00 (SD 4.28) mA." (Son. 2014)
You could do this in front of your TV at home (image from Son. 2014)
|Figure 1: Maximal force and muscle thickness before and after the NMES training (Son. 2014)|
- Jongsang Son, Dongyeop Lee, Youngho Kim, Effects of involuntary eccentric contraction training by neuromuscular electrical stimulation on the enhancement of muscle strength, Clinical Biomechanics, Available online 10 June 2014.