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47.5 MB (2.3 MB compressed)
4992 x 3328 pixels
42.2 x 28.2 cm ⏐ 16.6 x 11.1 in (300dpi)
MARK TURNBALL / SCIENCE PHOTO LIBRARY MARK TURNBALL / SCIENCE PHOTO LIBRARY
MODEL RELEASED. Strength training. Woman using a resistance training machine in a gymnasium. Strength training is the use of resistance (gravity, elastic or hydraulic forces) to oppose muscular contraction. This builds the strength, endurance and size of muscles.
Model release available. Property release not required.