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Background:

The Groningen Active Living Model (GALM) was developed to stimulate physical activity in sedentary and underactive older adults. The GALM physical activity program was primarily based on an evolutionary–biological play theory and insights from social cognitive theory. The purpose of this study was to assess the intensity of the GALM program.

Methods:

Data from 15 GALM sessions were obtained by means of heart rate monitors.

Results:

Data of 97 program participants (mean age: 60.1 y) were analyzed. The overall mean intensity for the GALM program was 73.7% of the predicted heart rate maximum and 6% of the monitored heart rate time could be classified as light, 33% as moderate and 61% as hard.

Conclusions:

The GALM program met the intensity guidelines to increase cardiorespiratory fitness. The intensity and attractiveness of this physical activity program make it an interesting alternative for stimulating physical activity in sedentary and underactive older adults.

de Jong, Lemmink, de Greef, Rispens, and Mulder are with the Institute of Human Movement Sciences, University of Groningen, 9700 AD Groningen, The Netherlands. Stevens is with the Dept of Orthopedics, Groningen University Hospital, 9700 RB Groningen, The Netherlands.

Journal of Physical Activity and Health