"during leisure" is a correct and usable phrase in written English.
You could use it to talk about activities you do during free time, such as "I enjoy reading books during leisure."
Less positive, however, are noise exposure situations during leisure time activities.
On average, adults were sedentary for 20 24 h per week during leisure.
Little challenging behavior occurred during leisure sessions when the participants had prior access to the reinforcers.
In effect, the BlackBerry tempts users to work during leisure time.
They hop more quickly than their female counterparts from sporting activities to television to video games during leisure time.
The discriminative stimuli for challenging behavior were present during leisure sessions but challenging behavior was never reinforced.
Physical and physiological comfort, at work and during leisure time, is important to human health and motivation.
In the beginning, what got people to turn on their computers during leisure hours was the computer game.
People watch TV primarily at home or during leisure time.
They would socialize together and chat during leisure time.
Sports-related and work injuries decreased, while injuries occurring during leisure time increased the most.
