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1. An act that requires use of resources or time. In Program Evaluation and Review Technique (PERT), an activity is represented by an arrow on a PERT chart.

2. In investing, the amount of a security's relative trading volume; that is, the amount of money flowing into and out of a security in trading. A high amount of activity means that many shares of the security are being bought and sold at a high rate, while a low level of activity indicates the opposite.


The amount of relative trading volume in a security.
References in periodicals archive ?
The other result indicate that there isn't significant relationship between health related quality of life with sport physical activity (p=0.
They concluded that the effectiveness of physical activity for preventing obesity might depend on the leisure time spent on sitting and that, intervention studies were needed to examine whether a total lifestyle approach, promoting both high physical activity and low leisure time sitting, was most effective at reducing the risk of becoming obese.
Survey questions about demographics and physical activity knowledge were multiple-choice and true/false.
Meanwhile, in a study conducted by a group of physicians in Qatar on "Assessment of sedentary behaviour and physical activity among Qatari schoolchildren" aged between nine to 12 years, it was found that girls spend 20 hours per week more time than boys watching television.
The cutoff points for calculating the minutes spent in light, moderate, and vigorous physical activity were set to 100-1,952, 1,953-5,724, and [greater than or equal to] 5,725 counts per minute, respectively (Craig et al.
It's crucial, therefore, we look at what can be done to further develop the role of schools in increasing physical activity.
Further reduction in the prevalence of no leisure-time physical activity (LTPA) among all adults might be hindered by population subgroups that have exceptionally high rates of no LTPA, such as adults with arthritis," the researchers noted.
Energy expenditure is a complex concept that is a result of multiple factors including posture, voluntary and involuntary physical activity, resting metabolic rate, and the thermic effect of feeding (the energy required in the digestion and absorption of food).
What can we do for family physical activity and recreation time?
This year's symposium was a great success with over 120 coaches, teachers, recreation professionals and academic scholars learning about the history and legal implications of Title IX, how girls with disabilities experience sport, competition and physical activity, cross cultural considerations of coaching girls and how we move forward in promoting more opportunities for girls and women in sport and physical activity.
These researchers concluded that summer break from schools may result in less structured days leading to less physical activity and a less healthy diet.
Understanding habitual physical activity in the bipolar population could be useful in designing targeted interventions, they said.

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