Sweat Rate Measurements After High Intensity Interval Training Using Body Weight

Abstract

Introduction: Physical activity raises body temperature, increases the sweat rate and accelerates fluid loss during exercise, thereby impairing exercise performance. However, studies using the high intensity interval training (HIIT) approach and its effects on rates of perspiration and hydration are still inconclusive. Objectives: The objective of this study was to assess sweating and water loss during an HIIT workout session, using body weight, with healthy college students. Methods: Twenty male individuals (31 ± 07 years) were split into two groups: Active group (AG) and Inactive group (IG). The HIIT workout protocol, using body weight, consisted of a single bout with 1:1 stimuli, being: 30" "all out" intensity, involving jumping jack, mountain climber, burpee and squat jump exercises; and 30" of passive recovery, totaling 20 minutes of exercises. For comparison purposes, after 48 hours all the individuals underwent the continuous running protocol with intensity corresponding to 75% of maximum heart rate for 40 minutes. The intensity of the session was monitored continuously, at each 30", using the perceived exertion scale for both protocols. To ensure euhydration status, all individuals ingested 500 ml of water 120 minutes before the training session. Results: Significant differences (p= 0.01) were found in body mass after HIIT compared to the Moderate session in both Active (HIIT: -0.60 ± 0.29 kg, Moderate: -0.26 ± 0.12 kg) and Inactive (HIIT: -0.92 ± 0.30 kg, Moderate: -0.26 ± 0.26 kg) groups, however, no differences were found between groups. Absolute sweating rate values comparing moderate and HIIT single bout in Inactive (Moderate: 10.55 ± 10.59 ml/min; HIIT: 28.90 ± 13.88 ml/min) and Active (Moderate: 9.60 ± 4.52 ml/min; HIIT: 26.00 ± 15.06 ml/min) groups were different between types of exercise, but not between groups. Conclusions: The sweating rate is influenced by the intensity of the exercise, being higher after HIIT than after a moderate exercise session. However, the sweating rate variation is not affected by the subjects' physical activity level. Level of Evidence II; Diagnostic studies-Investigating a diagnostic test.

Energy expenditure and intensity of HIIT bodywork® session

“…min -1 , which is similar to values observed in a Crossfit study 25 and corresponding to high intensity, as recommended by the ACSM -exercises performed above 6 METS are considered as intense 26 . Similarly, both the heart rate data of the present study (86.87%) and previous reports [3][4][5] , as well as in studies with boot camp, naval rope, jumps, and circuit training, all agree that it attains values above those proposed (85% of maximum predicted HR) by ACSM for high-intensity exercise (85% of predicted maximum HR) [28][29][30] .…”

“…Additionally, the combination of whole-body exercise and high-intensity interval training methods have been investigated in the literature in acute [3][4][5][6] or chronic [7][8][9][10][11] study designs. Methodologically, the sessions of HIIT bodywork ® consist of performing exercises only with body weight at high intensity for a predetermined time, followed by a fixed time rest interval.…”

“…Methodologically, the sessions of HIIT bodywork ® consist of performing exercises only with body weight at high intensity for a predetermined time, followed by a fixed time rest interval. Although different session designs have been previously addressed [3][4][5][6]12 , there still lacks information about elaboration, monitoring, progression, and characterization of the training session.…”

A nova calistenia

“…Esse treinamento pode ser considerada uma modalidade de fácil acesso e baixo custo o que facilitaria a inclusão de grande parte da população, mas é necessária uma proposta metodológica clara e de fácil uso para a massificação do HIIT [11].Em 2017 um grupo de pesquisadores [12] propôs uma metodológica de organização da sessão de treino de HIIT com peso do corpo e denominou de HIIT body work. A proposta metodológica surgiu a partir de uma série de pesquisas [13][14][15][16][17] nas quais foram observadas as respostas fisiológicas e modelos metodológicos, como: resposta da frequência cardíaca, reposta do lactato, resposta do consumo do oxigênio, esforço percebido, recuperação percebida, classificação dos exercícios e distribuição dos exercícios.Com isso a seleção dos exercícios para a elaboração de uma sessão de HIIT body work obedece a uma regra metodológica, que é um dos pilares da calistenia tradicional, na qual se destacam: a sessão deve ser de caráter inclusivo, usar apenas o peso do corpo e ter como objetivo saúde, condicionamento e/ou estética. Nesse contexto podemos afirmar que o HIIT body work é a nova calistenia, pois ele se enquadra nos quatro pilares da calistenia tradicional, porém com uma nova abordagem metodológica.…”

“…Em 2017 um grupo de pesquisadores [12] propôs uma metodológica de organização da sessão de treino de HIIT com peso do corpo e denominou de HIIT body work. A proposta metodológica surgiu a partir de uma série de pesquisas [13][14][15][16][17] nas quais foram observadas as respostas fisiológicas e modelos metodológicos, como: resposta da frequência cardíaca, reposta do lactato, resposta do consumo do oxigênio, esforço percebido, recuperação percebida, classificação dos exercícios e distribuição dos exercícios.…”