Name: evaluation of blood lactate and plasma insulin during high-intensity exercise by antecubital vein catheterization
Uploaded: 2018-05-18T12:30:00
Description: Watch this Scientific Journal Video about Evaluation of Blood Lactate and Plasma Insulin During High-intensity Exercise by Antecubital Vein Catheterization at JoVE.com

The authors would like to acknowledge Dr. P. Karagiannis for reading the paper and Professor T. Hoyo for his technical support.

All methods described here have been approved by the local ethical committee (Doshisha University Ethical Committee: 15033), and were in strict accordance with the standards set by the Declaration of Helsinki. Informed consent was obtained from all participants. Participants were male recreational athletes (age, 20.1 &#177; 1.2 years; weight, 69.7 &#177; 6.2 kg; height, 176.1 &#177; 5.8 cm; body fat 13.6 &#177; 1.5% and VO2max, 52.6 &#177; 6.6 mL/min1/kg1).
1. Es...

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In this study, the antecubital vein was catheterized, and blood samples were successfully collected during a high interval exercise. As an example of the use of this methodology, blood samples were analyzed for blood lactate and (after plasma separation) for plasma insulin. The main advantage of this method is that it allows the collection of blood samples in short periods of time. At the same time, it does have some limitations. For instance, the limited exercise modalities that allow its use; the number of assistant ne...

The measurement of metabolic and endocrinal markers during physical activity is of relevance to understanding the physiological implications of different exercise modalities. During some exercise modalities (e.g., high-intensity interval exercise (HIIE)), blood metabolites and hormonal levels fluctuate in relatively short time1,2,3.
Many sports (i.e., soccer, basketball, and rugby) consist of short periods of high-intensity exercise separated by low intense exercise and/or passive periods4,5. HIIE presents similarities with the aforementioned sports and is therefore widely used as a training method for athletes6. Moreover, because of its similarity with sports, HIIE has been used as a model to study exercise physiology7. Blood sampling is critical to measure physiological variables, and it is frequently used for research purposes and the evaluation of the physical condition. However, blood sampling during HIIE can be technically difficult because of the short time between sample collections. As a solution to this problem, here we present a method to obtain blood samples by antecubital venous catheterization in short periods of time while subjects perform HIIE.

<table border="0" cellpadding="0" cellspacing="0" width="626">
	<tbody>
		<tr height="22">
			<td height="22" style="height:22px;width:216px;">Cycle ergometer</td>
			<td style="width:71px;">Monark</td>
			<td colspan="2" style="width:339px;">MONARK Ergomedic 874 E</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:216px;">Catheter</td>
			<td style="width:71px;">Terumo</td>
			<td style="width:172px;">SR-FF2032</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:216px;">Vacutainer</td>
			<td style="width:71px;">Terumo</td>
			<td>PZ-D03</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:216px;">Tube for catheter</td>
			<td style="width:71px;">Terumo</td>
			<td style="width:172px;">SP-PTW30L02</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Heparin</td>
			<td style="width:71px;">Terumo</td>
			<td>PF-10HF10UA</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Lactate pro2</td>
			<td style="width:71px;">Arkray</td>
			<td>&#65324;&#65332;-1730</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Insulin ELISA kit</td>
			<td>Abnova</td>
			<td>ELISA Kit KA0921</td>
			<td></td>
		</tr>
	</tbody>
</table>

evaluation of blood lactate and plasma insulin during high-intensity exercise by antecubital vein catheterization

The measurement of metabolic and endocrinal markers during physical activity is of relevance to understanding the physiological implications of different exercise modalities. During some exercise modalities (e.g., high-intensity interval exercise), blood metabolites and hormonal levels change in short periods of time. In the present study, we describe a method to catheterize the antecubital vein, which allows the collection of several blood samples during exercise. Insulin and venous lactate concentrations were measured during high-intensity exercise by the application of the described method. The exercise consisted of three 30 s bouts of high-intensity exercise separated by 4 min of recovery. After the last recovery period, a Wingate test was performed. Blood samples from the antecubital vein were obtained before and after each 30 s bout and before and after the Wingate test. As a result, it was possible to evaluate the plasma insulin and venous blood lactate variations during the exercise.

As representative results, we used this protocol to measure blood lactate and insulin variation in six subjects during a HIIE in a cycle ergometer. Peak power and Average Power for the Wingate test were 732 &#177; 120 and 549 &#177; 84 Watts, respectively. Average Power was used to calculate the power output (494 &#177; 75 Watts) during the 30 s bouts of the HIIE.
Figure 2 shows plasma insulin and b...

Watch this Scientific Journal Video about Evaluation of Blood Lactate and Plasma Insulin During High-intensity Exercise by Antecubital Vein Catheterization at JoVE.com

Evaluation of Blood Lactate and Plasma Insulin During High-intensity Exercise by Antecubital Vein Catheterization

Here we present a protocol to obtain several blood samples from the antecubital vein during high-intensity interval training. This protocol may be useful for the measurement of blood metabolites and endocrinal markers during exercise.

The measurement of metabolic and endocrinal markers during physical activity is of relevance to understanding the physiological implications of different ...

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