Muscle quality index comparisons between Hispanics and non-Hispanic Caucasians using dual energy X-ray absorptiometry and handgrip strength.

Autor: Mehra A; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA., Snarr RL; Department of Kinesiology, Texas A&M University-Corpus Christi, Corpus Christi, TX, USA., Park KS; College of Nursing and Health Sciences, Texas A&M International University, Laredo, TX, USA., Krok-Schoen JL; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA., Czerwinski SA; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA., Nickerson BS; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA. brett.nickerson@osumc.edu.
Jazyk: angličtina
Zdroj: European journal of clinical nutrition [Eur J Clin Nutr] 2024 Aug 08. Date of Electronic Publication: 2024 Aug 08.
DOI: 10.1038/s41430-024-01484-y
Abstrakt: Background & Aims: Muscle quality index (MQI) can be computed in various ways. Also, many studies have evaluated MQI in older adults and non-Hispanic populations. The aim of this study was to compare various muscle quality indexes between Hispanics and non-Hispanic Caucasians when stratifying grip strength and appendicular lean mass measurements.
Methods: 235 participants (aged 25.5 ± 9.5 for males and 26.4 ± 9.9 for females) completed a dual energy X-ray absorptiometry (DXA) scan to assess appendicular lean mass (ALM). Handgrip strength (HGS) was assessed using a handheld dynamometer. MQI was computed using four different models: 1). MQI RA : ALM and HGS of right arm and hand, respectively; 2). MQI LA : ALM and HGS of left arm and hand, respectively; 3). MQI ARMS : ALM and HGS of both arms and hands, respectively; and 4). MQI TOTAL : ALM of upper and lower-limbs and HGS of left and right hand.
Results: Hispanic males and females exhibited lower HGS compared to Caucasians with effect sizes ranging from trivial (d = 0.17) to moderate (d = 0.80). Females demonstrated higher MQI values compared to males for MQI ARMS (d = 0.70), MQI RA (d = 0.75), and MQI LA (d = 0.57). However, MQI TOTAL yielded a small practical effect (d = 0.33) in favor of males (3.2 ± 0.5 kg/kg vs. 3.1 ± 0.5 kg/kg). After factoring by sex and ethnicity, Hispanic males and females, compared to non-Hispanic Caucasians males and females, showed trivial-to-small practical differences (d values ranging from 0.03 to 0.39).
Conclusions: These results demonstrate MQI models vary across sex, particularly when utilizing models that account for upper extremity strength and ALM (i.e., MQI ARMS , MQI RA , and MQI LA ). Lastly, to establish consistency in future research, the present study recommends using MQI models that account for ALM of upper- and lower-limbs (i.e., MQI TOTAL ). However, research measuring muscular strength via one upper-limb (e.g., left hand) might consider measuring ALM of the corresponding arm (e.g., left arm) when computing muscle quality (e.g., MQI LA ).
(© 2024. The Author(s).)
Databáze: MEDLINE
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