Article	BIA Measurement (Whole-Body or Segmental Body Composition)	Position of Participants During Assessment (Supine or Standing)	Participant Preparation Protocols (e.g., Fasting Requirements, Exercise Restrictions)	Specific Body Composition Measures Assessed and Raw BIA Measures
Ding et al., 2018 [32]	Segmental	Supine—Lying position and the electrodes were attached in both ankles for legs and thumbs and middle fingers for arms	Free intake period before fasting	BCM 1, FM 2, FFM 3, and SMM 4 were obtained weekly using the InBody software from baseline until the end of treatment. FFMI 5 and FMI 6 values were calculated by dividing a patient’s FFM and FM values by the height squared (m2).
Grossberg et al., 2021 [5]	Segmental	Standing—One of three possible hand positions was selected such that the angle between the body and arms was as close to 30 degrees as possible.	To avoid additional barriers to adequate nutrition and exercise, participants were instructed to not alter their food intake or activity prior to measurement.	SMM, FFM, and FM.
Jager-Wittenaar et al., 2014 [9]	Segmental	Supine—Patients were put in a supine position 15 min before and during the measurement.	Patients were not allowed to eat or drink during the 4 h preceding the measurements. Patients were measured in their underwear, without shoes, and after voiding their bladders.	(ECW 7/ICW 8) ratio was calculated. R 9 and Xc 10 measured at 50 kHz were used to estimate FFM with the Geneva equation.
Lundberg et al., 2017 [16]	Segmental	Standing	Not mentioned.	BMI 11, R, Xc, PhA 12, FFMI, FMI, PhA, as well as a BIVA 13
Lundberg et al., 2019 [25]	Segmental	Standing	Not mentioned.	The BIA parameters registered included PhA, FFMI and SMMI 14.
Bell et al., 2020 [42]	Segmental	Supine—Four electrodes were placed on the right side of the body in the following locations: (1) hand, (2) wrist, (3) foot and (4) ankle.	After voiding their bladder and removing all jewelry	R and Xc measurements. Measurements were performed twice, and the average R and Xc values were used to calculate FFM.
Jung et al., 2020 [33]	Segmental	Supine—Before the measurement, the patients rested in a lying down state for 15 min. In a stable position, patients’ arms were abducted to about 15 min.	Not mentioned.	TBW 15, total body skeleton, body FM, SMM, FFM and body fat percentage
Wilczyński et al., 2020 [46]	Segmental	Supine	In order to obtain the most accurate measurements, they were always carried out at the same time by the same trained person (between 18:00 and 20:00 p.m.) and under the same conditions, e.g., always before a meal.	Body mass (kg), BMI, FM, (%), FM (kg), FFM, MM (kg), TBW (kg) and TBW (%), MMLUL 16 (kg), MMRUL 17 (kg), LULFM 18 (kg) and RULFM 19 (kg).
Powell et al., 2020 [26]	Whole-body	Supine—The patient was supine and motionless throughout the test and the right arm was held equidistant from the torso during each assessment.	Not mentioned.	SMM (kg), FFM (kg), body fat (kg), ICW %, ECW %, TBW and PhA
Lee et al., 2021 [30]	Segmental	Supine—BIA was performed with patients in a standing position according to the manufacturer’s instructions after shoes, coats, and sweaters had been removed.	BIA was performed on the day of admission before intravenous hydration.	PhA, extracellular fluid and total body fluid, BCM, and appendicular skeletal muscle
Skroński et al., 2018 [27]	Segmental	Supine	The patients undergoing surgery were subjected to a two-fold body composition analysis procedure. The first measurement was carried out 1 day before the scheduled operation, the second measurement was made between the 5th and 6th day after surgery, before the patient was discharged from hospital. The measurement was carried out at 25 °C after at least 2.5 h from the last meal.	TBW, ICW, ECW, FFM, SMM, FM, BCM
Mikamori et al., 2016 [28]	Segmental	Standing	Not mentioned.	SMM, FM, VFA 20, and the ratio ECW/TBW
Gao et al., 2020 [43]	Segmental	Standing	Patients with fasting condition and empty bladder stand with both arms 45° apart from the body trunk and with both feet bared on the spots of the platform.	TBW, total FM, fat percentage, LBM, SBM 21 and FFM.
Jones et al., 2020 [34]	Whole-body	Supine—The patient lay in a supine position, with shoes and socks removed.	Not mentioned.	FFM, FFMI.
Kim et al., 2020 [31]	Segmental	Standing	Body composition of all participants was measured after a minimum of 3 h of fasting and voiding before measurements.	TBW, ICW, ECW, the ECW ratio (ECW/TBW), SLM 22, FFMFM, percent body fat, SMM, BCM, and bone mineral content.
Palle et al., 2016 [35]	Segmental	Standing	The patients were instructed not to eat, drink or exercise one hour before the determination of FFM	FM Fat at torso BIA
Ræder et al., 2018 [40]	Two different BIA devices were used—one whole-body single-frequency BIA and a multifrequency segmental BIA	Supine (whole-body) vs. standing (segmental)	The patients were instructed to fast overnight and until all measurements were completed. They were also encouraged to void their bladders before measurements.	FFM (whole-body BIA) vs. FFM (segmental BIA)
Song et al., 2019 [41]	Segmental	Standing	Not mentioned.	Body FM, percent body fat, body fat mass of trunk, VFA, FMI, and measured fat thickness of the abdomen SLM, FFM, SMM, SLM of trunk (kg)
Souza et al., 2020 [36]	Segmental	Supine	Participants under 6 h of fast.	SMM and PhA
Szefel et al., 2020 [37]	Segmental	Supine	Not mentioned.	FFMI, SMMI, ECW/TBW, and PhA
Dzierżek et al., 2020 [38]	Segmental	Supine	Not mentioned.	FM, FFM, TBW, ICW, ECW and BCM
Hansen et al., 2021 [44]	Segmental	Standing	BIA took place on the same day as the first cycle of treatment, but prior to commencing treatment. Patients were instructed to fast at least 4 h (consumption of water was allowed until 2 h), refrain from exercise 8 h, and to urinate within 30 min prior to testing.	MM and FM
Zopfs et al., 2020 [29]	Segmental	Standing	Overnight-fasted patients within the morning hours	MM, FM, FFM, and VFA
Cereda et al., 2021 [39]	Segmental	Standing	Not mentioned.	FFM
1 Body cell mass. 2 Fat mass. 3 Fat-free mass. 4 Skeletal muscle mass. 5 Fat-free mass index. 6 Fat mass index. 7 Extracellular water. 8 Intracellular water. 9 Resistance. 10 Reactance. 11 Body mass index. 12 Phase angle. 13 Bioelectrical Impedance Vector Analysis. 14 Skeletal muscle mass index. 15 Total body water. 16 Muscle mass of the left upper limb. 17 Muscle mass of the right upper limb. 18 Left upper limb fat mass. 19 Right upper limb fat mass. 20 Visceral fat area. 21 Skeletal body mass. 22 Soft lean mass.