Network Magazine autumn 2016 | Page 24

REVIEW: ZUMBA: HEART RATE AND BACK PAIN UNDER THE MICROSCOPE Two recent studies investigate whether Zumba fitness classes can provide workouts that are not only effective, but also safe. WORDS: ASSOCIATE PROFESSOR MIKE CLIMSTEIN & JOE WALSH Title: Zumba Gold®: Are The Physiological Responses Sufficient to Improve Fitness in MiddleAge to Older Adults? Author: Dr’s Dalleck, Roos, Byrd and Weatherwax. (Dept of Recreation, Exercise and Sports Science, Western State Colorado University, USA) Source: Journal of Sports Science and Medicine (2015). Volume 14, pp689-690 Introduction: We’ve been looking for scientific articles on Zumba for quite some time, but until recently couldn’t find any that met our criteria – then late last year we found two. It seems unlikely that you don’t know what Zumba is, but in case that is the situation, here’s a quick overview: it’s a dance fitness program that was developed by a Colombian dancer and choreographer in the 1990s. Zumba consists of dance and aerobic components, which lends itself particularly well to group exercise. The dance elements include hip-hop, mambo, merengue, samba and soca (also known as ‘the soul of calypso). It is estimated that Zumba is in 180 countries with almost 12 million participants each week. Previous research (Luettgen et al., 2012) has reported that participation in Zumba resulted in a heart rate of approximately 80 per cent of age-predicted heart rate max and an average caloric expenditure of 360 kcals. However, this heart rate intensity may be too high for many mature-aged individuals. Zumba isn’t just one style of class, however: the focus of this research study is Zumba Gold, a modified form of Zumba that is tailored specifically to mature-aged individuals. Dr Dalleck and his colleagues investigated the cardiometabolic responses 24 | NETWORK AUTUMN 2016 of Zumba Gold in this demographic. Methods: A total of 16 male and female senior participants (average age 64 years) volunteered to participate in this study which involved two visits to an exercise and sports science laboratory. On the first visit participants had height, weight, resting heart rate, maximal heart rate and maximal oxygen consumption (VO2max) assessed. During the second visit to the laboratory, participants completed a 45-minute Zumba Gold class during which cardiometabolic responses were assessed. The researchers utilised a portable calorimetric device to assess energy expenditure and a Polar telemetry heart rate monitor to assess exercise heart rate response. Results: The average heart rate response of participants for the 45-minute Zumba Gold class was approximately 114 beats per minute, which corresponded to approximately 50 per cent of the agepredicted heart rate reserve and 50 per cent of the participants’ VO2max. The participants expended almost 200 kcals of energy in the 45-minute class (4.2 kcals/ min for female participants, 5.0 kcals/min for male participants).