Network Magazine autumn 2016 | Page 25

The authors concluded that, based upon their findings, Zumba Gold meets the guidelines for improving/maintaining cardiorespiratory fitness. Additionally, the authors state that their results indicate that Zumba Gold was found to be moderate intensity exercise (3 to 6 METS) as it averaged 4.4 METS (range 2.1 to 6.9 METS). The rationale for the importance of determining Zumba Gold as a ‘moderate intensity’ activity is due to the health-related benefits for participants (given high compliance). Pros: Thi s is a good initial investigation assessing the cardiometabolic response to Zumba Gold in mature-aged participants. Cons: It would have been beneficial for the researchers to conduct a longitudinal study of 16 weeks and assess participants at week 8 and 16 to determine any improvements in cardiometabolic parameters (VO2max, resting heart rate/blood pressure, lipid (cholesterol) levels). Title: Is the Zumba fitness responsible for low back pain? Author: Dr’s Notarnicola, Maccagnano, Pesce, Tafuri, Leo and Moretti. (Orthopedics Section, Department of Basical Medical Sciences, University of Study of Bari, General Hospital, Italy) Source: Musculoskeletal Surgery (2015). Volume 99, pp211-216 Introduction: As fitness professionals we prescribe various modes of exercise for a number of reasons, including health, fitness and social. However, specific modes and/or intensities of exercise may be contraindicated (relative or absolute) depending upon an individual’s limitations (medical and/or musculoskeletal). Furthermore, exercises inherently can induce injury, generally if repetitious, too intense or performed with improper technique. The Australian Institute of Health and Welfare reports that approximately 14 per cent of the Australian population suffers from back problems, and that 70 to 90 per cent of all Australians will suffer from low back pain in their lifetime. NSW chiropractors have claimed that Zumba can cause muscle soreness or injury, and that not having good technique can lead to painful sprains, strains and low back pain. Others have also made these claims. Methods: Dr Notarnicola and colleagues investigated the effects of low back pain in Zumba participants over a six-month period. A total of 50 young, healthy females participated in this study, 25 in the Zumba group (Zumba exercise only) and 25 inactive controls for comparison. All participants completed a disability questionnaire (Roland–Morris), a low back pain disability questionnaire (Oswestry) and a spinal functional sort test (quantifies the ability to perform work tasks that involve the spine and lower extremities). Results: The inactive group had decreases in physical functioning and the Zumba group had improvement in spine function. There were no differences between groups with regard to episodes of back pain, prompting the authors to conclude that Zumba does not induce back pain. Pros: A good finding that Zumba does not induce back pain. Zumba may be a suitable ‘moderate intensity’ activity for middle-aged clients and the movements are unlikely to cause back pain. Cons: The authors reported ‘dropout’ for both groups (three in each group), however they should have also reported compliance, particularly for the Zumba group. Associate Professor Mike Climstein, PhD FASMF FACSM FAAESS is one of Australia’s leading Accredited Exercise Physiologists and researchers. [email protected] Joe Walsh, MSc is a sport and exercise scientist. As well as working for Charles Darwin and Bond Universities, he is a director of Fitness Clinic in Five Dock, Sydney. fitnessclinic.com.au The 30-second article • Prompted by previous research findings that participation in regular Zumba classes resulted in a heart rate of approximately 80% HRmax, which may be too high for many older individuals, researchers explored the cardiometabolic responses of Zumba Gold. • The average heart rate response for the 45-minute Zumba Gold class was approximately 114 beats per minute, which corresponded to approximately 50% of the agepredicted heart rate reserve and 50% of the participants’ VO 2max • Prompted by anecdotal evidence that participating in Zumba workouts could cause muscle soreness or injury, another group of researchers investigated the effects of low back pain in Zumba participants over a six-month period • In addition to experiencing no more episodes of back pain than a comparison inactive control group, the Zumba practitioners exhibited an improvement in spine function. NETWORK AUTUMN 2016 | 25