RESUMO
O objetivo deste estudo foi avaliar o perfil funcional, características do pé, o hábito de andar descalço de indivíduos com alterações musculoesqueléticas nos pés e comparar com indivíduos controle. Os participantes foram avaliados por meio de questionário eletrônico. Dados antropométricos, funcionalidade dos pés, hábito de andar descalço, tipo de calçado, tipo de pé e pisada e qual comprometimento do pé foram coletados. A amostra total foi composta por 160 indivíduos divididos em grupo controle (GC) (n=82) e grupo problemas no pé (GPE) (n=78). O hálux valgo foi o principal tipo de problema no grupo GPE (24,4%), com uma maior porcentagem de participantes com doença crônica (35,9%), tipos de pés cavos (pé esquerdo (PE) 16,7% e pé direito (PD) 19,2%) ou planos (PE 21,8% e PD 21,8%) e com o Índice de função do pé comprometido em 7% (P =0,001). Ambos os grupos consideram o hábito de andar descalço saudável (72% GC e 66,7% GPE), porém não são adeptos deste hábito (93,9% GC e 91% GPE). O sapato foi o modelo menos utilizado pelo GPE (10,3%). Concluímos que indivíduos do grupo GPE apresentaram maior associação de alterações morfofuncionais com a presença de distúrbios nos pés e que o hábito de andar descalço apesar de ser considerado um aspecto positivo para a saúde dos pés de ambos os grupos, nenhum destes o praticam.
This study aimed to evaluate the functional profile, foot characteristics, and barefoot walking habits of individuals with musculoskeletal foot alterations and compare them with control individuals. Participants were assessed through an electronic questionnaire. Anthropometric data, foot functionality, barefoot walking habits, footwear type, foot type, foot arch, stride type, and foot impairments were collected. The total sample consisted of 160 individuals divided into a control group (CG) (n=82) and a foot problems group (FPG) (n=78). Hallux valgus was the main foot problem in the FPG (24.4%), with a higher percentage of participants having chronic conditions (35.9%), cavus foot types (left foot (LF) 16.7% and right foot (RF) 19.2%), or flat foot types (LF 21.8% and RF 21.8%), and with a compromised Foot Function Index in 7% (P=0.001). Both groups considered barefoot walking healthy (72% CG and 66.7% FPG), but they are not practitioners of this habit (93.9% CG and 91% FPG). Shoes were the least utilized type of footwear in the FPG (10.3%). In conclusion, individuals in the FPG showed a stronger association between morpho-functional alterations and foot disorders. Although barefoot walking is considered beneficial for foot health in both groups, neither group practices this habit.
RESUMO
Obesity is closely related to insulin resistance and type 2 diabetes genesis. The liver is a key organ to glucose homeostasis since insulin resistance in this organ increases hepatic glucose production (HGP) and fasting hyperglycemia. The protein-tyrosine phosphatase 1B (PTP1B) may dephosphorylate the IR and IRS, contributing to insulin resistance in this organ. Aerobic exercise is a great strategy to increase insulin action in the liver by reducing the PTP1B content. In contrast, no study has shown the direct effects of strength training on the hepatic metabolism of PTP1B. Therefore, this study aims to investigate the effects of short-term strength exercise (STSE) on hepatic insulin sensitivity and PTP1B content in obese mice, regardless of body weight change. To achieve this goal, obese Swiss mice were submitted to a strength exercise protocol lasting 15 days. The results showed that STSE increased Akt phosphorylation in the liver and enhanced the control of HGP during the pyruvate tolerance test. Furthermore, sedentary obese animals increased PTP1B content and decreased IRS-1/2 tyrosine phosphorylation; however, STSE was able to reverse this scenario. Therefore, we conclude that STSE is an important strategy to improve the hepatic insulin sensitivity and HGP by reducing the PTP1B content in the liver of obese mice, regardless of changes in body weight.