Document Detail

Whole-body vibration training elevates creatine kinase levels in sedentary subjects.
MedLine Citation:
PMID:  21735363     Owner:  NLM     Status:  In-Data-Review    
PRINCIPLES: Whole body vibration (WBV) is an increasingly popular modality of muscle training, especially in sedentary subjects. We hypothesised that the vigorous muscle contractions elicited by WBV can cause muscle damage expressed as an elevation in muscle enzymes.
METHODS: Twenty inactive subjects, ten male and ten female, aged 22.7 ± 2.6, BMI 22.4 ± 2.1 were included based on the absence of regular physical activity as defined by international guidelines, and no history of recent trauma, musculoskeletal pathology, implanted prosthetics, cardiovascular disease or drug intake. The intervention consisted of one bout of high intensity WBV corresponding to a typical training session, involving all the major muscle groups. Plasma levels of muscle enzymes prior to and at 24, 48 and 96 hours post exercise (creatine kinase - CK, MB fraction, troponin I, aminotransferases and lactate dehydrogenase) were measured. In addition, blood lactate was assayed immediately after exercise. Delayed onset muscle soreness (DOMS) was evaluated using a visual analogical scale.
RESULTS: Five participants (25%) showed a significant increase in post exercise CK levels (> double of baseline). Maximal value was 3520 U/l. No change was observed in CK-MB or troponin I. Lactate increased to 10.0 ± 2.4 in men and 6.9 ± 2.4 in women. All participants had some degrees of DOMS, without correlation to enzymatic changes.
DISCUSSION: WBV can provoke high CK elevation in healthy, medication-free inactive subjects. Such an elevation is transient and harmless, but could be wrongly attributed to drug induced myopathy, as in patients treated with statins. Practitioners should bear this in mind before discontinuing a potential life saving drug.
B Gojanovic; F Feihl; L Liaudet; G Gremion; B Waeber
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Publication Detail:
Type:  Journal Article     Date:  2011-07-07
Journal Detail:
Title:  Swiss medical weekly     Volume:  141     ISSN:  1424-3997     ISO Abbreviation:  Swiss Med Wkly     Publication Date:  2011  
Date Detail:
Created Date:  2011-07-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100970884     Medline TA:  Swiss Med Wkly     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  w13222     Citation Subset:  IM    
Sports Medicine Unit, CHUV, Pierre Decker 4, 1011 Lausanne, CH.
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