For each trial, participants were equipped with a chest-strap heart rate monitor (Polar, Beth Page, NY, USA). A capillary blood sample was then obtained prior to exercise (pre) as aforementioned. Participants then completed a 5 min standardized warm-up at 50 watts on a mechanically braked cycle ergometer (Monark, Varberg, Sweden) to a metronome set to 60 bpm. For the repeated supramaximal tests, participants completed 3 × 15 s Wingate Anaerobic Tests (WAnTs), as previously described by our lab [22 (link),24 (link),29 (link)]. Participants performed the WAnTs on an electronically braked cycle ergometer (Velotron, Racermate Inc., Seattle, WA, USA). Seat height was standardized between visits for each participant. To begin each WAnT, participants pedaled for 20 s against an unloaded resistance that was immediately ensued by a 10 s lead-in phase to allow for the attainment of maximal pedal rate. At the end of the lead-in phase, resistance was immediately applied at 7.5% of the participant’s body mass and they pedaled as hard and as fast as possible for 15 s. Participants then completed 2 additional WAnTs for a total of 3 supramaximal tests with a separation of 2 min of active recovery. After each WAnT, RPE (1–10 scale) was documented. All participants were verbally encouraged during the testing. Then, identical blood collection protocols were repeated.
Chest strap heart rate monitor
Manufactured by Polar Electro
Sourced in United States, Finland
The Polar Electro chest strap heart rate monitor is a device that measures the user's heart rate. It consists of a strap that is worn around the chest and a sensor that detects the electrical activity of the user's heart. The data collected by the device is transmitted to a compatible device, such as a watch or a smartphone, for monitoring and recording purposes.
Automatically generated - may contain errors
Lab products found in correlation
5 protocols using chest strap heart rate monitor
1
Repeated Supramaximal Exercise Testing
2
Monitoring Physiological Responses During Exercise
3
Incremental Treadmill Test Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The following stages were used in the incremental treadmill protocol, each lasting 3 minutes; the first 2 stages were 4.8 kph (3 mph) and 6.4 kph (4 mph) at 0% grade; successive stages were at 6.4 kph with grades of 5, 10, 15, and 20%; thereafter, grade remained at 20%, and speed was increased to 7.2 kph (4.5 mph) and then 8.0 kph (5 mph). During these incremental treadmill tests, the subjects' expired gases were analyzed using a metabolic cart (Vmax 29c; SensorMedics, Yorba Linda, CA, USA) to determine the peak oxygen consumption ( ), peak ventilation (V Epeak ), and peak respiratory exchange ratio (RER peak ). is reported relative to body mass. The subjects wore a chest strap heart rate monitor (Polar, Kempele, Finland) for measuring peak heart rate (HR peak ). The highest values obtained over a 60-second period (typically, the final 60 seconds) were designated peak, as opposed to maximal, because it was assumed that muscular fatigue during tests with the heavier loads might prevent the attainment of a true maximal .
4
Maximal Oxygen Uptake Assessment
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
O2 max was assessed during the first visit using a constant-speed treadmill protocol with a 2% increase in incline every 2 min until exhaustion. Participants warmed up for 5–10 m jogging at a self-selected speed. The treadmill speed was chosen based on each participant's experience, typical running speed, and heart rate such that O2 max was achieved in ∼6–12 min. Pulmonary ventilation and expired gas concentrations were analyzed in real time using an automated computerized indirect calorimetry system (Parvo Medics TrueOne 2400, Salt Lake City, UT) and data were averaged every 30 s. O2 was considered maximum if a plateau was achieved (increase in O2 of < 150 ml/min with increased work) or, in the absence of a clear plateau, tests were verified to meet at least two of the following secondary criteria of maximal effort: a respiratory exchange ratio > 1.10, a rating of perceived exertion > 18 on a 6–20 scale, and a heart rate within 10 beats/min of the age-predicted maximum.29 ,31 (link) Heart rate was measured during the test using chest strap heart rate monitors (Polar Electro Inc, Lake Success, NY). At the end of the test, participants walked for 5–10 min to cool down.
5
VO2max Assessment Using Treadmill Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
VO2max was assessed during the baseline visit using a constant-speed treadmill protocol with a 2% increase in incline every 2 minutes until exhaustion. The treadmill speed was chosen based on each subject’s experience, typical running speed, and heart rate such that VO2max was achieved in 6–12 min. Pulmonary ventilation and expired gas concentrations were analyzed in real time using an automated computerized indirect calorimetry system (COSMED, Rome, Italy). VO2 was considered maximum if a plateau was achieved (increase in VO2 of < 150 ml/min with increased work). In the absence of a clear plateau, tests were verified to meet at least two of the following secondary criteria of maximal effort: a respiratory exchange ratio >1.10, a rating of perceived exertion >18, and a peak heart rate within 10 beats/min of the age-predicted maximum. Heart rate was measured during the test using chest strap heart rate monitors (Polar Electro Inc, Lake Success, NY).
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!