Validity of the Training-Load Concept DOI Open Access
Louis Passfield, Juan M. Murias, Massimo Sacchetti

et al.

International Journal of Sports Physiology and Performance, Journal Year: 2022, Volume and Issue: 17(4), P. 507 - 514

Published: March 5, 2022

Training load (TL) is a widely used concept in training prescription and monitoring also recognized as an important tool for avoiding athlete injury, illness, overtraining. With the widespread adoption of wearable devices, TL metrics are increasingly by researchers practitioners worldwide. Conceptually, was proposed means to quantify dose predict its resulting effect. However, has never been validated measure dose, there risk that fundamental problems related calculation preventing advances monitoring. Specifically, we highlight recent studies from our research groups where compare acute performance decrement measured following session with metrics. These suggest most not consistent their notional exercise duration confounds calculation. show total work done appropriate way interventions differ intensity. We encourage scientists critically evaluate validity current new need be developed.

Language: Английский

Fractal Correlation Properties of Heart Rate Variability: A New Biomarker for Intensity Distribution in Endurance Exercise and Training Prescription? DOI Creative Commons
Thomas Gronwald, Bruce Rogers, Olaf Hoos

et al.

Frontiers in Physiology, Journal Year: 2020, Volume and Issue: 11

Published: Sept. 18, 2020

Exercise and training prescription in endurance-type sports has a strong theoretical background with various practical applications based on threshold concepts. Given the challenges pitfalls of determining individual zones basis subsystem indicators (e.g. blood lactate concentration, respiratory parameters), question arises whether there are alternatives for intensity distribution demarcation. Considering that low zone substantially contributes to performance outcome endurance athletes exceeding targets misleading aerobic can lead negative recovery effects, it would be desirable find parameter could derived via non-invasive, cost commonly available wearable devices. In this regard, analytics conducted from non‐linear dynamics heart rate variability (HRV) have been adapted gain further insights into complex cardiovascular regulation during exercise. reciprocal antagonistic behaviour interaction sympathetic parasympathetic branch autonomic nervous system high exercise intensities, may promising use an approach utilizes information about quality organismic determine training-intensity distribution. Detrended fluctuation analysis HRV its short-term scaling exponent alpha1 (DFA-alpha1) seems suitable applied sport‐specific settings including intensities. DFA-alpha1 taken as indicator monitoring sports. The present perspective illustrates potential diagnostic purposes "global" proxy demands.

Language: Английский

Citations

61

Activity modification in heat: critical assessment of guidelines across athletic, occupational, and military settings in the USA DOI
Yuri Hosokawa, Douglas J. Casa, J. Trtanj

et al.

International Journal of Biometeorology, Journal Year: 2019, Volume and Issue: 63(3), P. 405 - 427

Published: Feb. 1, 2019

Language: Английский

Citations

58

Respiratory Monitoring During Physical Activities With a Multi-Sensor Smart Garment and Related Algorithms DOI
Carlo Massaroni, Joshua Di Tocco, Marco Bravi

et al.

IEEE Sensors Journal, Journal Year: 2019, Volume and Issue: 20(4), P. 2173 - 2180

Published: Oct. 28, 2019

Unobtrusive and wearable devices are gaining large acceptance in the continuous monitoring of physiological parameters. Among five vital signs, respiratory rate (fR) can be used to detect abnormalities health status changes. The purpose this work was investigate performances a multi-sensor smart garment estimating fR during walking running activities. Bespoke algorithms have been implemented retrieve values from raw data. Experiments were carried out on ten male volunteers activities at selected speeds controlled by treadmill (i.e., 1.6 km·h -1 8.0 ). Data analysed both frequency time domains. In domain, analyzed considering window 20 s. 97% f R estimated agreed with reference flowmeter) range ±3 breaths per minute (bpm). breath-by-breath analysis out. performance evaluated terms mean absolute error (MAE), standard (SE), percentage (mean %E[i]) B[i] and-Altman analysis. Good agreement device testified low MAE (<; 1.86 bpm), SE 0.21 %E[i] 2.83 %), Bland-Altman (Mean Differences = 0.22 bpm, Limits Agreement 6.06 bpm). Summing up, based six sensing elements related bespoke able provide robust information about average bases even physical

Language: Английский

Citations

58

Dietary supplements, vitamins and minerals as potential interventions against viruses: Perspectives for COVID-19 DOI Creative Commons
Muhammad Torequl Islam, Cristina Quispe, Miquel Martorell

et al.

International Journal for Vitamin and Nutrition Research, Journal Year: 2021, Volume and Issue: 92(1), P. 49 - 66

Published: Jan. 13, 2021

The novel coronavirus (SARS-CoV-2) causing COVID-19 disease pandemic has infected millions of people and caused more than thousands deaths in many countries across the world. number cases is increasing day by day. Unfortunately, we do not have a vaccine specific treatment for it. Along with protective measures, respiratory and/or circulatory supports some antiviral retroviral drugs been used against SARS-CoV-2, but there are no extensive studies proving their efficacy. In this study, latest publications field reviewed, focusing on modulatory effects immunity natural dietary supplements, vitamins minerals. Findings suggest that several including black seeds, garlic, ginger, cranberry, orange, omega-3 -6 polyunsaturated fatty acids, (e.g., A, B vitamins, C, D, E), minerals Cu, Fe, Mg, Mn, Na, Se, Zn) anti-viral effects. Many them act various species viruses, severe acute syndrome-related coronaviruses. Therefore, minerals, probiotics as well individual nutritional behaviour can be adjuvant therapy together medicines management disease.

Language: Английский

Citations

50

Validity of the Training-Load Concept DOI Open Access
Louis Passfield, Juan M. Murias, Massimo Sacchetti

et al.

International Journal of Sports Physiology and Performance, Journal Year: 2022, Volume and Issue: 17(4), P. 507 - 514

Published: March 5, 2022

Training load (TL) is a widely used concept in training prescription and monitoring also recognized as an important tool for avoiding athlete injury, illness, overtraining. With the widespread adoption of wearable devices, TL metrics are increasingly by researchers practitioners worldwide. Conceptually, was proposed means to quantify dose predict its resulting effect. However, has never been validated measure dose, there risk that fundamental problems related calculation preventing advances monitoring. Specifically, we highlight recent studies from our research groups where compare acute performance decrement measured following session with metrics. These suggest most not consistent their notional exercise duration confounds calculation. show total work done appropriate way interventions differ intensity. We encourage scientists critically evaluate validity current new need be developed.

Language: Английский

Citations

35