Comparison of Methods for the Estimation of the Maximum Oxygen Uptake of Men Drug Addicts

Abstract

Background: Maximum oxygen uptake (VO2max) is an important respiratory physiological index of the aerobic endurance of the body, especially for special groups such as drug addicts, and it is an important indicator for assessing the cardiopulmonary function and formulating exercise prescriptions. Although the cardiopulmonary exercise test (CPX) is a classic method to directly measure VO2max, this method is limited by factors such as cumbersome operating procedures and expensive equipment, resulting in its relatively low applicability. Recently, many studies have begun to focus on the estimation of VO2max in different groups of people, but few studies have focused on drug addicts.Methods: Fifteen chemically synthesized drug addicts (such as amphetamines) and Fifteen plant-derived drug addicts (such as heroin) were recruited at the Chongqing Compulsory Isolation and Drug Rehabilitation Center in China. First, the VO2max of subjects was directly measured through the CPX. Second, after subjects were fully rested, they were required to complete the 30-s high-leg raise, 1,000-m walk, and 3-min step experiment. Finally, SPSS 21.0 software was used to perform the correlation and linear regression analysis to verify the estimated effectiveness.Results: (1) Regardless of chemically synthesized or natural plant-derived drug addicts, the years of drug use and walking time of 1,000 m were significantly negatively correlated with VO2max (chemically synthesized: P < 0.01 and natural plant-derived: P < 0.05), the number of 30-s high-leg raises was a significantly positive correlation with VO2max (P < 0.05 and P < 0.01), and the 3-min step index was significantly positively correlated with VO2max (P < 0.01 and P < 0.01). (2) Regression analysis shows that the 30-s high-leg lift, 1,000-m walking, and 3-min step experiment could effectively estimate the VO2max of chemically synthesized and natural plant-derived drug addicts. (3) Multiple linear regression constructed by the years of drug use combined with the step index has the highest estimated accuracy for the VO2max of chemically synthesized drug addicts (96.48%), while the unary regression equation established by a single step index has the highest prediction accuracy for the VO2max of natural plant-derived addicts (94.30%).Conclusion: The indirect measurement method could effectively estimate the VO2max of drug addicts, but different measurement methods have certain differences in the estimation accuracy of VO2max of different drug addicts. In the future, the physical characteristics of drug users can be fully considered, combined with more cutting-edge science and technology, to make the estimation accuracy of VO2max closer to the real level.

Opiate Use Disorder and Exercise: A Systematic Review

“…Two other additional articles were excluded due to discrepancies within the study designs, leaving 18 articles (Figure 1) for full review. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] exercise and strength exercise. Nine of the studies were retrospective in nature.…”

Comparação entre a determinação direta do VO2 máximo e a determinação indireta do VO2 máximo pelo dispositivo polar V800 de corredores recreacionais

“…Existem, atualmente, diversos protocolos validados para a avaliação direta como indireta da capacidade cardiorrespiratória, no entanto há poucos trabalhos que se propuseram comparar diferentes protocolos de determinação do VO 2 max (Emig & Peltonen, 2020;Wang et al, 2021). O dispositivo Polar V800 já foi validado quanto à mensuração do gasto energético (Roos et al, 2017), intervalo RR em indivíduos em repouso (Giles et al, 2015) e em situação de corrida (Caminal et al, 2018) e na mensuração da altura de saltos verticais em atletas de taekwondo (M. A. P. dos Santos et al, 2021).…”