Observation and biomechanical measurements might be more accurate in measuring physical activity.
Although there is no universally accepted gold standard for measuring physical activity, some direct and indirect measurement techniques exist, such as activity monitor using an accelerometer, heart rate monitor, double labeled water, and questionnaires.
In the NSCLC literature, few studies are conducted measuring physical activity levels and even fewer studies have investigated the measurement properties associated with tests.
In recent years, scientific interest has increased notably in measuring physical activity environments.
Accurately measuring physical activity and energy expenditure in persons with chronic physical disabilities who use wheelchairs is a considerable and ongoing challenge.
Meanwhile, a study comparing wearables to the fitness apps on smartphones suggests that the latter could be more accurate when it comes to measuring physical activity.
There is no consensus on the best approach for measuring physical activity in patients with osteoarthritis (OA) of the hip or knee.
To explore issues associated with measuring physical activity using the International Physical Activity Questionnaire (IPAQ -long form IPAQ -longliving in a mid-sized Brazilian city.
Objectives: To evaluate disuse (ie, a decreased daily physical activity level) in patients with chronic low back pain (LBP) and to evaluate the construct validity of accelerometry for measuring physical activity in daily life.
Physical inactivity plays an important role in the development of kidney disease and its complications; however, the validity of standard tools for measuring physical activity (PA) is not well understood.
A more precise instrument for measuring physical activity is needed.
