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. 2023 Sep 19;23(1):474.
doi: 10.1186/s12887-023-04290-w.

Differences in the absolute muscle strength and power of children and adolescents with overweight or obesity: a systematic review

José Luis Alaniz-Arcos  1 , Ma Elena Ortiz-Cornejo  1 , José Omar Larios-Tinoco  1 , Miguel Klünder-Klünder  2 , Karla Vidal-Mitzi  1 , Claudia Gutiérrez-Camacho  3
Affiliations

Differences in the absolute muscle strength and power of children and adolescents with overweight or obesity: a systematic review

José Luis Alaniz-Arcos et al. BMC Pediatr. .

Abstract

This study aimed to describe absolute muscle strength and power in children and adolescents with obesity, overweight and normal weight, and the assessment tests and tools used. We retrieved observational studies from MEDLINE (PubMed), TripDataBase, Epistemonikos, EBSCO essentials, NICE, SCOPUS, and LILACs up to February 2023. In addition, we recovered data from studies with at least three comparison groups (obesity, overweight, normal weight) and with a description of the absolute muscle strength and power and the assessment tests and instruments used. The methodologic quality of the studies was assessed with the Joanna Briggs checklist, and the review was carried out using the PRISMA 2020 methodology. Eleven studies with 13,451 participants from 6 to 18 years of age were once included, finding that the absolute muscle strength of their upper extremities was greater when they were overweight or obese; however, in the same groups, absolute muscle strength was lower when they carried their body weight. In addition, lower limb absolute muscle strength was significantly lower in obese participants than in normal weight, regardless of age and gender. The most used tools to measure the absolute muscle strength of the upper limbs were the grip dynamometers and push-up exercises. In contrast, different jump tests were used to measure the power of the lower limbs. There are great differences in muscle strength and power between overweight or obese children and adolescents and those with normal weight. Therefore, it is recommended to use validated tests, preferably that assess strength through the load of the patient's body weight, either of the upper or lower limbs, for greater evaluation objectivity that facilitates the management of these children and adolescents.

Keywords: Absolute muscle strength; Assessment instruments; Muscle tests; Obesity; Overweight; Power.

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Conflict of interest statement

The authors declare no competing interests.

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PRISMA flow chart
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