Percentage of Peak Workload Is Suitable for Quantification of Exercise Intensity During High-Intensity Intervals: A Comment on Ekkekakis, Hartman, and Ladwig

Vollaard, Niels B.J.; Metcalfe, Richard S.; Kinghorn, Daniel; Jung, Mary E.; Little, Jonathan P.

doi:10.1123/jsep.2023-0179

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Additionally, it is difficult to classify interval exercise as high-intensity, vigorous-intensity, or moderate-intensity, as rest periods make reaching a physiological steady state impossible. As such, recent evidence has suggested using a percentage of peak workloads to assess the intensity during interval exercise [79]. With regard to rest periods, Martinez et al reported greater feelings of pleasure during, and higher enjoyment following interval exercise using shorter intervals after controlling for total work [80].…”

Section: Discussionmentioning

confidence: 99%

Enjoyment and Affective Responses to Moderate and High-Intensity Exercise: A Randomized Controlled Trial in Individuals with Subsyndromal PTSD

Greene,

Holland-Winkler,

Petruzzello

2024

Sports

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This crossover randomized controlled trial examined the acute psychological effects of a bout of moderate-intensity continuous aerobic exercise (MICE) and a bout of high-intensity functional exercise (HIFE), relative to a no-exercise sedentary control (SED), in participants (N = 21; 15 f; 24.7 ± 9.3 years) with subsyndromal post-traumatic stress disorder (PTSD). Affective state (Energy, Tiredness, Tension, Calmness) was assessed before (Pre), immediately after (Post 0), 20-min after (Post 20), and 40-min after (Post 40) each condition. Affective valence was assessed during each condition, and exercise enjoyment was assessed at Post 0. Enjoyment was significantly greater following HIFE and MICE relative to SED. Energy was significantly increased Post 0 HIFE and MICE but decreased Post 0 SED. Tension was reduced following all conditions and was significantly lower at Post 40 relative to Pre for HIFE, MICE, and SED. Tiredness was significantly reduced at Post 40 relative to Pre following MICE only, while Calmness was significantly lower at Post 40 relative to Pre following MICE and SED. Overall, both exercise conditions were enjoyed to a greater extent than the control, but MICE may provide greater psychological benefits with respect to Calmness and Tiredness. This study is among the first to assess acute changes in affective states relative to various exercise modes in individuals living with subsyndromal PTSD.

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Section: Discussionmentioning

confidence: 99%

Enjoyment and Affective Responses to Moderate and High-Intensity Exercise: A Randomized Controlled Trial in Individuals with Subsyndromal PTSD

Greene,

Holland-Winkler,

Petruzzello

2024

Sports

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When Studying Affective Responses to Exercise, the Definition of “Intensity” Must Reference Homeostatic Perturbations: A Retort to Vollaard et al.

Ekkekakis,

Hartman,

Ladwig

2024

Journal of Sport &Amp; Exercise Psychology

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In articles on the methodology of studies investigating affective and enjoyment responses to high-intensity interval training, we noted that, occasionally, exercise conditions described as involving “high” intensity exhibited heart rates that were only as high as, or even lower than, heart rates recorded during comparator conditions described as being of “moderate” intensity. Drs. Vollaard, Metcalfe, Kinghorn, Jung, and Little suggest instead that exercise intensity in high-intensity interval-training studies can be defined in terms of percentages of peak workload. Although we maintain that defining exercise intensity in terms of percentages of maximal heart rate is a suboptimal way to quantify the degree of homeostatic perturbations in response to exercise, we are unconvinced that definitions of intensity relying solely on workload are appropriate for studies investigating affective and enjoyment responses to exercise. The reason is that affect is theorized to have evolved to relay information about homeostatic perturbations to consciousness.

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“But will they do it?” Challenging assumptions and incivility in the academic discourse on high-intensity interval training

Jung,

Santos,

Ginis

2024

Appl. Physiol. Nutr. Metab.

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Debate over whether to promote high intensity interval training (HIIT) in public-health contexts has centred on assumptions that people will have negative psychological responses to HIIT, leading to poor adoption and adherence. We challenge these assumptions through reviews of (1) studies that have measured psychological responses to HIIT and (2) studies that have measured adherence to HIIT protocols in supervised or unsupervised settings. Overall, the evidence suggests HIIT is just as enjoyable as moderate intensity continuous (MICT) exercise. In supervised situations, on average, adherence is similarly high for HIIT and MICT (>89%). In unsupervised situations, adherence is lower for both HIIT and MICT (<69%). Based on these findings, we recommend that attention be directed toward improving behaviour-change and maintenance for all types of exercise. Resources are better spent addressing fundamental questions about exercise initiation and adherence, than perpetuating a vitriolic and uncivil debate over the value of HIIT versus MICT. We discuss how debate, incivility and bullying undermine scientific progress and we issue a call for respectful, civil dialogue in academic HIIT discussions. We conclude with recommendations that can be used by all members of the scientific community to practice, champion and defend civil discourse.

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Percentage of Peak Workload Is Suitable for Quantification of Exercise Intensity During High-Intensity Intervals: A Comment on Ekkekakis, Hartman, and Ladwig

Cited by 3 publications

References 8 publications

Enjoyment and Affective Responses to Moderate and High-Intensity Exercise: A Randomized Controlled Trial in Individuals with Subsyndromal PTSD

Enjoyment and Affective Responses to Moderate and High-Intensity Exercise: A Randomized Controlled Trial in Individuals with Subsyndromal PTSD

When Studying Affective Responses to Exercise, the Definition of “Intensity” Must Reference Homeostatic Perturbations: A Retort to Vollaard et al.

“But will they do it?” Challenging assumptions and incivility in the academic discourse on high-intensity interval training

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