overstrain

v., -strained, -strain·ing, -strains.

v.tr.
To subject to excessive strain, especially to force beyond a natural or proper limit: overstraining the environment.

v.intr.
To put forth too much physical effort.

An acute condition resulting from doing too much exercise on one occasion. Long distance runners, cross-country skiers, and others whose activities require excessively high energy outputs, often suffer from overstrain. See also overreaching and overtraining.

A form of rundown that develops in those training beyond the adaptation capacity of the body. Over-strain occurs commonly in those taking part in sports which require excessive energy outputs, such as long-distance running and cross-country skiing. Unlike over-training, it includes physiological fatigue which causes both nervous and hormonal disturbances. These are indicated by a decrease in activity of the sympathetic nervous system with a reduction in adrenal function, and greater activity of the parasympathetic nervous system.

Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: too much strain

---

The verb overstrain has 2 meanings:

Meaning #1: strain excessively
  Synonym: overextend

Meaning #2: overstrain oneself

---