Scientific Publications Related to Energy Expenditure

Title	Author	Year	Journal/Proceedings	Study design & Population	Category	Physiological parameter(s)	Insights on findings
Energy Balance, Hormonal Status, and Military Performance in Strenuous Winter Training	Nykänen T, Ojanen T, Vaara JP, Pihlainen K, Heikkinen R, Kyröläinen H & Fogelholm M	2023	International Journal of Environmental Research and Public Health 20(5), 4086	Experimental study, Male soldiers, N = 68	Applied use	Energy Expenditure	Firstbeat methods were used to estimate energy expenditure in a study examining the associations between energy intake, expenditure, and balance, hormones and military performance during a winter survival training.
Changes in Body Composition, Energy Metabolites and Electrolytes During Winter Survival Training in Male Soldiers	Nykänen T, Ojanen T, Heikkinen R, Fogelholm M & Kyröläinen H	2022	Frontiers in Physiology 13:797268	Experimental study; Male soldiers, N = 68	Applied use	Energy Expenditure	Firstbeat methods were used to estimate energy expenditure in a study investigating the changes in body composition, energy metabolites and electrolytes during a 10-day winter survival training period.
Pulmonary Capacity, Blood Composition and Metabolism among Coal Mine Workers in High- and Low-Altitude Aboveground and Underground Workplaces	Wang Y, Wang H, Chen Y, Xu N, Lee W & Lam W-K	2022	International Journal of Environmental Research and Public Health, 19 (14), 8295	Experimental study; healthy male coal mine workers from Tibet (altitude 3990–4400m) and Tangshan (altitude 100-120m), N = 71	Applied use	HR; HRV: Energy expenditure, TRIMP	The study used Firstbeat methods when comparing HRV, cardiorespiratory capacity and metabolism in coal mine workers at different altitudes (high vs. low altitude) and worksites (aboveground vs. underground). High-altitude mining workers can present higher HR, total energy expenditure, metabolism indicators and pulmonary function than those in the low-altitude region, which may be related to the hypoxic environment. Compared to the aboveground worksites, workers in underground mining demonstrated smaller HR, TRIMP and total energy expenditure.
Influence of chronic pain in physical activity of children with cerebral palsy	Riquelme I, do Rosário R, Vehmaskoski K, Natunen P & Montoya P	2018	NeuroRehabilitation, 43 (2): 113-123.	Cross-sectional study; 4-16 y children, n=52	Applied use	Energy expenditure	The study used Firstbeat Bodyguard for 24-h HR monitoring and Firstbeat energy expenditure assessment in four groups of children: children with cerebral palsy (CP) with and without chronic pain and typically developing peers with and without chronic pain.
Cardiovascular and Energy Requirements of Parents Watching Their Child Compete: A Pilot Mixed-Methods Investigation	Lochbaum M, Prosoli R, Barić R	2017	Pedagogics, psychology, medical-biological problems of physical training and sports, 21(6):279–284	Qualitative study; Adults, n = 2	Applied use	Energy Expenditure; Training Effect	The study documented physiological reactions of parents watching their son to compete in national junior championship in judo. The father’s data repsented reactions comparable to aerobic activity. The pilot-type study presented unique data on parents and found wearable technology useful in qualitative research.
Novel tools in determining the physiological demands and nutritional practises of Ontario FireRangers during fire deployments	Robertson AH, Larivière C, Leduc CR, McGillis Z, Eger T, Godwin A, Larivière M & Dorman SC	2017	PlosOne 12(1):e0169390	Cross-sectional study; Adult, n = 21	Applied use	Energy expenditure; Stress and recovery	Firstbeat method was used to assess deployment specific energy demands and physiological responses of firemen. Results support the use of a modern technology for the comprehensive evaluation of physiological variables and food consumption in free-living occupational settings.
Validating the use of heart rate variability for estimating energy expenditurete variability for estimating energy expenditure	Robertson AH, King K, Ritchie SD, Gauthier AP, Laurence M & Dorman SC	2015	International Journal of Human Movement and Sports Sciences 3(2): 19-26	Cohort study; Adult, n = 30	Validity	Energy expenditure; VO2max	Energy expenditure provided by Firstbeat method was validated against indirect calorimetry. The authors concluded that EE estimates provided by Firstbeat are sufficiently accurate to indicate that the method possesses practical utility and may be used for individual EE monitoring.
Exercise for fitness does not decrease the muscular inactivity time during normal daily life	Finni T, Haakana P, Pesola AJ & Pullinen T	2014	Scandinavian Journal of Medicine and Science in Sport 24: 211-219	Cross-sectional study; Adult, n = 27	Applied use	Energy expenditure	Energy expenditure provided by Firstbeat method was used as a reference for daily energy expenditure and compared to muscle activity data [EMG] during active and non-active days
Heart rate variability recordings are a valid non-invasive tool for evaluating soldiers’ stress	Salonen M, Kokko J, Tyysk J & Koivu M	2013	Journal of Defence Studies and Resource Management	Cross-sectional study	Applied use; Usability	Energy expenditure	Firstbeat methods were utilized in assessing soldiers energy expenditure and cardiovascular autonomic modulation during 72-hour military field training and shown applicable method for assessing soldiers stress
Validation of heart rate monitor-based predictions of oxygen uptake and energy expenditure	Montgomery P, Green D, Etxebarria N, Pyne D, Saunders P & Minahan C	2009	Journal of Strength and Conditioning Research 23(5): 1489-1495	Cross-sectional study; Adult, n = 17	Validity	Energy expenditure; VO2	Firstbeat VO2 estimation method vary ~ 6% in submaximalmaximal running compared to calibrated laboratory gas exchange system, and less if accurate background parameters are used
A novel method for using heart rate variability data for estimation of oxygen consumption and energy expenditure: A validation	Smolander J, Rusko H, Ajoviita M, Juuti T & Nummela A	2007	ECSS congress	Cross-sectional study; Adult, n = 20	Validity	Energy expenditure; VO2	Firstbeat method provides adequate estimates of breathing frequency and on/off-kinetics of HR and VO2, and consequently the oxygen consumption and energy expenditure
Energy expenditure can be accurately estimated from HR without individual laboratory calibration	Pulkkinen A, Saalasti S & Rusko H	2005	ACSM congress	Cross-sectional study: Adult, n = 32	Validity	Energy expenditure	Firstbeat method provided an accurate and practical method for estimating energy expenditure without individual laboratory calibration making it especially suitable for field use