Excerpts — Advanced Fitness Assessment and Exercise Prescription 7th Edition With Online Video
Technology is a double-edged sword. Computers, for example, contribute to sedentary leisure-time behaviors (e.g., playing seated computer games). On the other hand, technology has been used to promote physical activity and change exercise behavior.
Hydrostatic weighing (HW) is a valid, reliable, and widely used laboratory method for assessing total Db. Hydrostatic weighing provides an estimate of total body volume (BV) from the water displaced by the body’s volume.
The ACSM’s 2008 "Physical Activity Guidelines for Americans" suggests balance training at least 3 days a week for inactive and active older adults (\gte\65 yr). In a position statement on exercise for older adults (Chodzko-Zajko et al. 2009), the ACSM also recommended that older adults engage in balance activities at least two times week.