Intensity of resistance training via self-reported history is critical in properly characterizing musculoskeletal health

Autor:	Hawley C. Almstedt, Grant T. Mello, Joseph W. LaBrie, Allison G. Leggett, Todd C. Shoepe
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Peak bone mass Male medicine.medical_specialty Sarcopenia lcsh:Diseases of the musculoskeletal system Sports medicine medicine.medical_treatment Osteoporosis 030209 endocrinology & metabolism Physical strength 03 medical and health sciences 0302 clinical medicine Absorptiometry Photon Rheumatology Bone Density BMD Medicine Humans Orthopedics and Sports Medicine Prospective Studies Retrospective Studies Muscle quality Rehabilitation Hand Strength business.industry Resistance Training 030229 sport sciences medicine.disease Orthopedic surgery Lean body mass Physical therapy Female Self Report Strength lcsh:RC925-935 business Research Article
Zdroj:	BMC Musculoskeletal Disorders, Vol 21, Iss 1, Pp 1-14 (2020) BMC Musculoskeletal Disorders
ISSN:	1471-2474
DOI:	10.1186/s12891-020-03753-w
Popis:	Background Intensity of resistance training history might be omitted or poorly ascertained in prescreening or data questionnaires involving musculoskeletal health. Failure to identify history of high-versus low-intensity training may overlook higher effect sizes with higher intensities and therefore diminish the precision of statistical analysis with resistance training as a covariate and bias the confirmation of baseline homogeneity for experimental group designation. The purpose was to determine the degree to which a single question assessing participant history of resistance training intensity predicted differences in musculoskeletal health. Methods In the first research aim, participants were separated into groups with a history (RT) and no history (NRT) of resistance training. The second research aim evaluated the history of resistance training intensity on muscular strength, lean mass, and bone mineral density (BMD), RT participants were reassigned into a low- (LIRT) or high-intensity resistance training group (HIRT). 83 males and 87 females (19.3 ± 0.6 yrs., 171.1 ± 9.9 cm, 67.1 ± 10.5 kg, 22.9 ± 2.8 BMI, 26.2 ± 7.2% body fat) completed handgrip dynamometry (HG) and dual-energy x-ray absorptiometry scans (DXA) for BMD and bone mineral-free lean mass (BFLM). Results A 3-group method (NRT, LIRT, HIRT) reduced type-I error compared with the 2-group method (NRT, RT) in characterizing the likely effects of one’s history of resistance training. For the second aim, HIRT had significantly (p 2) while LIRT revealed no significant skeletal differences to NRT. Conclusions Retrospective identification of high-intensity history of resistance training appears critical in characterizing musculoskeletal health and can be ascertained easily in as little as a single, standalone question. Both retrospective-questionnaire style investigations and pre-screening for potential participation in prospective research studies should include participant history of resistance training intensity.
Databáze:	OpenAIRE
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