Personal Training, Yoga and Wellness Services in NYC

1335 AVENUE OF THE AMERICAS (at 54th st.)

NEW YORK, NY 10019

212-255-5842

888-276-6317

455 MADISON AVE (at 50th st.)

NEW YORK, NY 10022

212-255-5842

888-276-6317

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Fitness Glossary

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P
| Q | R | S | T | U | V | W | X | Y | Z
Imbalance
The state or condition of lacking balance. (Muscular imbalances) Lack of balance and normal symmetry within the muscular system.
Impingement
An encroachment on the space occupied by soft tissue, such as nerve or muscle. In this text, impingement refers to nerve irritation (i.e., from pressure or friction) associated with muscles.
In Vitro
Functioning outside of, or detached from the body.
In Vivo
Functioning within the body.
Innervation
Nerve stimulation of a muscle.
Internal Rotation
Rotation occurring toward midline; movement inward.
Isokinetic Exercise
Contractions performed at constant angular velocity.
Isolate-Integrate
When a weak link is identified, it may be important to emphasize the target area by isolating the joint movement. Isolated strength can then be integrated with the rest of the body.
Isometric Action
Iso = same; metric = length - The force produced by the muscle is equal and opposite to the external resistance, therefore, there is no net change in muscle length - no limb movement. (Also referred to as Static exercise)
Interstitial
The space within an organ.
Ipsilateral
The same side of the body.
Isolation
Normally defined as a single joint motion. It is important to remember that one cannot isolate a muscle while resistance training. For example, immediately following a load application, the stabilizer muscles become partially involved, due to the machine's assistance. The outside assistance (machine) helps the body or specific joint(s) to remain stable while the prime movers cope with the load. Although we cannot isolate muscles, we can use certain machines to isolate a joint(s), which will emphasize a target area.
Isotonic Exercise
Exercise involving constant muscle contraction.